Review
Anthropology
Moh. Mualliful Ilmi, Evi Maryanti, Nadya Nurdini, Pindi Setiawan, Grandprix T. M. Kadja, Ismunandar
Summary: Physicochemical-based analyses have been widely utilized to study rock art in Indonesia, but research in this area is still in the early stages. Despite the diversity and large number of rock art sites in Indonesia, only a few reports have described the physicochemical properties and radiometric data of rock art. Further studies and comprehensive research are needed to improve our understanding of rock art in Indonesia.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2021)
Article
Anthropology
Zuleika Murat
Summary: This paper critically examines wall painting in the Middle Ages, focusing on Italy from the twelfth to fifteenth centuries. It integrates diverse methodologies and research tools to explore the technical aspects and historical sources of wall paintings, using specific case studies to highlight the materiality of the artwork and avoid abstract concepts.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Annarosa Mangone, Camilla Colombi, Giacomo Eramo, Italo Maria Muntoni, Tiziana Forleo, Lorena Carla Giannossa
Summary: The wall paintings of five Hellenistic tombs in Apulia were analyzed using various techniques to determine the painting techniques used and their context within Hellenistic tomb painting in Southern Italy. The study aimed to investigate if technical knowledge influenced the adoption of Hellenistic artistic models and if this knowledge was locally present. The analysis revealed the use of fresco and dry applications for different tombs, and a typical palette of lime, charcoal, hematite, goethite, and Egyptian blue. Additionally, refined preparatory layers and the use of specific pigments suggested the involvement of a local workshop in the decoration of one tomb.
Article
Anthropology
Tang Huisheng, Robert G. Bednarik
Summary: This study reconsiders the application of Th-230/U-234 analysis to thin accretionary skins of re-precipitated carbonate for rock art dating, suggesting potential overestimation of ages. Two case studies from Chinese rock art in Heilongjiang and Yunnan Provinces are presented, along with proposed error sources and cautionary measures to prevent sensational but ultimately inaccurate age estimates.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Giovanna Fioretti, Gioacchino Tempesta, Salvatore Capotorto, Giacomo Eramo
Summary: This study presents the results of a non-invasive characterization of pigments and their mixtures in the wall paintings of a 10th century Byzantine church in Italy. Portable digital polarized microscopy, fiber optic reflectance spectroscopy and X-ray fluorescence spectroscopy were used for analysis. The findings identified various pigments, including red and yellow ochres, green earth, vine black, minium and Egyptian blue. The presence of pigment mixtures indicated the use of techniques by local medieval artists to imitate expensive pigments, contributing to the understanding of the artistic tradition of that time. The results were showcased using orthophotos extracted from a digital photogrammetric 3D model.
Article
Geography, Physical
Marvin W. Rowe, Jean-Loic Le Quellec, Shelby A. Jones, Eric Blinman, Caroline Welte, Frederique Duquesnoy, Vincent Charpentier, Ali al-Mashani, Ali Ahmed al-Kathiri
Summary: We successfully measured radiocarbon dates on a black geometric rock painting in the Zufar region of Sultanate of Oman using CO2 extracted from the black pigment binder. The dates obtained were in agreement with each other and the average date was around 1500 BP. This research demonstrates the ability to date black paintings in the Jebel al-Qara' region using radiocarbon dating, which is the first pictogram dated in the region.
Article
Anthropology
Karen L. Steelman, Carolyn E. Boyd, Trinidy Allen
Summary: This study presents a novel approach to reliably dating rock paintings, using two independent methods to obtain ages for Pecos River style paintings in Langtry, Texas. The radiocarbon dates obtained for the paintings are statistically indistinguishable, and the chronological stratigraphy of accretion and paint layers supports the validity of both dating methods. These dating methods can be applied to rock art provinces worldwide.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Rafael Molari, Carlos Roberto Appoloni
Summary: Portable energy-dispersive X-ray fluorescence spectroscopy (pXRF) was used to characterize the pigments in the painting Still Life with Vase, Plate and Flowers, which was previously attributed to Vincent van Gogh. The analysis revealed the presence of various pigments commonly used by European artists in the late 19th century.
APPLIED RADIATION AND ISOTOPES
(2023)
Article
Spectroscopy
Marcelo O. Pereira, Valter S. Felix, Ana L. Oliveira, Douglas S. Ferreira, Andre R. Pimenta, Cristiano S. Carvalho, Fabricio L. Silva, Carlos A. Perez, Douglas Galante, Renato P. Freitas
Summary: In this work, a suspected counterfeit painting was analyzed using MA-XRF technique, reconstructing the signature and visualizing the use of pigments based on various elements. Additional information about binders used on the painting was obtained through SEM-EDS and FTIR techniques.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Margherita Longoni, Serena Francone, Maddalena Boscacci, Diego Sali, Isabella Cavaliere, Vittoria Guglielmi, Silvia Bruni
Summary: Since their introduction in the early 20th century, fluorescent pigments have been widely used in various fields. The Italian Black Light Art movement utilizes different types of radiation (UV or visible light) to convey different aesthetic messages. Through non-invasive in-situ investigation techniques, the researchers successfully identified the materials used by the artists in Black Light Art paintings exhibited in Milan.
Article
Geochemistry & Geophysics
Daniel Jimenez-Desmond, Anna Arizzi, Carolina Cardell
Summary: The research focused on the wall paintings of Hernan Perez del Pulgar's Palace chapel in Granada, Spain and aimed to determine their historical-artistic, stylistic, technical, and compositional aspects. The study of a 16th-century frieze and an 18th-century pendentive, along with mineralogical, chemical, and textural characterization of the materials, allowed for the identification of the pictorial technique used and the presence of salts and fungal attack. The information obtained will contribute to the effective conservation and restoration of the paintings, ensuring their durability over time.
Article
Geochemistry & Geophysics
Lucilla Pronti, Giuseppe Capobianco, Margherita Vendittelli, Anna Candida Felici, Silvia Serranti, Giuseppe Bonifazi
Summary: The study proposes an optimized method combining reflectance spectroscopy and multispectral imaging to analyze the distribution of mineral pigments used by Vincenzo Pasqualoni in a wall painting in Rome. By utilizing point-by-point hyperspectral spectroscopy and Principal Component Analysis, the researchers were able to successfully identify and quantitatively assess the pigment distribution.
Article
Biotechnology & Applied Microbiology
Wenxia Ma, Fasi Wu, Jie Li, Qi Zhang, Xiaoju Yang, Ji-Dong Gu, Wanfu Wang, Huyuan Feng
Summary: The Mogao Grottoes, a UNESCO World Cultural Heritage site, have been affected by microbial colonization and deterioration of the wall paintings, resulting in the appearance of black spots and microbial biomasses. Next-generation sequencing and microscopy were used to identify the microbial community responsible for the biodeterioration. Rhodococcus and Ralstonia were found to be the dominant bacteria, while Aspergillus species were the predominant fungi in the black spots and microbial biomasses. Radioactive carbon-14 dating suggested that the original mural was painted during the Five Dynasties and Ten Kingdoms period, with repainting most likely occurring during the Song Dynasty. The outbreak of indigenous microbes on the wall paintings was likely initiated by earthen plaster preparation or heavy rainfall combined with a leaky roof.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Article
Chemistry, Analytical
Mona Abdel-Ghani
Summary: A multidisciplinary study was performed on a Persian painting to explore its structure and pigments used, revealing the layering and pigment choices in the artwork. The research findings indicate that the painting exhibits some unique characteristics in composition and pigment selection.
VIBRATIONAL SPECTROSCOPY
(2022)
Article
Multidisciplinary Sciences
Siyuan Fang, Xingyi Lyu, Tian Tong, Aniqa Ibnat Lim, Tao Li, Jiming Bao, Yun Hang Hu
Summary: Large numbers of leaves fall off trees each autumn. Here, the authors turn dead leaves into an active material which acts as bioplastic and shows high performance in solar water evaporation, photocatalytic H-2 production and antibiotic degradation.
NATURE COMMUNICATIONS
(2023)
Article
Spectroscopy
Diego Quintero Balbas, Giancarlo Lanterna, Claudia Cirrincione, Marilena Ricci, Maurizio Becucci, Raffaella Fontana, Jana Striova
Summary: In this study, Raman spectroscopy combined with multivariate analysis was used to investigate naturally and artificially aged samples of silk and wool fibres dyed with turmeric and saffron dyes. Results showed that saffron has higher lightfastness compared to turmeric, and silk fibres are more prone to fading and degradation than wool fibers.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Environmental Sciences
Marta Lazzaroni, Marino Vetuschi Zuccolini, Barbara Nisi, Jacopo Cabassi, Stefano Caliro, Daniele Rappuoli, Orlando Vaselli
Summary: The study investigates the water, suspended particulates, and stream sediments of a creek in a mining area in Italy. The results show high concentrations of mercury and arsenic, especially in the sediments. The study also calculates the total mass load of these toxic elements entering another creek.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Multidisciplinary
Sara Calandra, Emma Cantisani, Silvia Vettori, Marilena Ricci, Beatrice Agostini, Carlo Alberto Garzonio
Summary: During the restoration campaign of the Baptistery of San Giovanni in Florence, the conservation state of the external surfaces was assessed using a multi-analytical approach. The research included the identification and classification of different materials and technologies used in the construction and restoration of the Baptistery. The findings revealed the provenance of marbles and the use of local materials and traditional techniques in the production of bricks and mortars.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Elena Pecchioni, Pasquino Pallecchi, Gianna Giachi, Sara Calandra, Alba P. Santo
Summary: The aim of the study was to investigate the materials and manufacturing techniques of the preparatory layers on the rock surface of the Tomba dei Demoni Alati. The results showed the use of different methods to prepare the tomb surfaces, with the discovery of the use of plaster in Tuscany for the first time, and the finding of a preparation layer that had never been found in any other archaeological context.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
Marco Taussi, Caterina Gozzi, Orlando Vaselli, Jacopo Cabassi, Matia Menichini, Marco Doveri, Marco Romei, Alfredo Ferretti, Alma Gambioli, Barbara Nisi
Summary: In recent decades, global groundwater resources have faced significant deterioration due to nitrate pollution caused by agricultural fertilizers, manure, sewage, and untreated urban and industrial effluents. Surface and shallow reservoirs, which are crucial for supplying water to civil, agricultural, and industrial activities, are the most affected. The Metauro River plain in central Italy, along the Adriatic Sea coastline, is home to a strategic phreatic aquifer that, along with the river's surface water, provides water to the local population. This coastal aquifer has been contaminated by nitrates since the 1970s, with high pollution levels resulting from increased use of agricultural fertilizers. Local authorities have implemented remediation measures, including pumping NO3--poor waters from the river directly into the shallow aquifer. This study aims to analyze the nitrate contamination of this important water resource by examining its geochemical characteristics and temporal evolution between 2009 and 2020, using classical geochemical analyses and multivariate methods to assess the effectiveness of in-situ remediation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Green & Sustainable Science & Technology
Silvia Vettori, Davide Romoli, Teresa Salvatici, Valentina Rimondi, Elena Pecchioni, Sandro Moretti, Marco Benvenuti, Pilario Costagliola, Rachele Manganelli Del Fa, Michele Coppola, Beatrice Agostini, Francesco Di Benedetto
Summary: The monitoring of stone alteration is crucial for understanding and predicting the conservation status of building stones in urban areas. A non-destructive analytical approach and a simple, low-cost tool are needed for continuous monitoring and studying decay processes. This study aims to develop a protocol using SWIR hyperspectral and colorimetric techniques to investigate the sulfation degree of the white marble cladding surfaces of the Santa Maria del Fiore Cathedral in Florence. The proposed protocol is rapid, repeatable, and non-invasive, and showed significant changes in color and mineralogy over a nine-year period.
Article
Chemistry, Analytical
Marilena Ricci, Emilio Mario Castellucci, Silvia Innocenti, Maurizio Becucci
Summary: In this study, we investigated the interaction between luteolin and silver using density functional theory. We constructed two complexes, CPLX1 and CPLX2, where an Ag-14 cluster is positioned at different sites of the luteolin molecule. Raman and surface-enhanced Raman scattering spectra were measured for luteolin at different excitation wavelengths. Our DFT calculations accurately reproduced the Raman spectra of luteolin samples from various suppliers. We were able to assign the vibrational modes of luteolin and the two luteolin-Ag-14 complexes by decomposing the normal coordinates into internal coordinates. The calculated Raman spectrum for CPLX1 better matched the experimental SERS spectra, while CPLX2 displayed a spectrum similar to luteolin in the high frequency region and might be responsible for some weak bands in the 1400-1700 cm(-1) range that could not be explained by the CPLX1 system. Additionally, the SERS spectra varied depending on the Raman excitation wavelength, possibly due to the presence of charge-transfer states.
Article
Geochemistry & Geophysics
Marco Taussi, Barbara Nisi, Andrea Brogi, Domenico Liotta, Martina Zucchi, Stefania Venturi, Jacopo Cabassi, Gabriele Boschi, Marika Ciliberti, Orlando Vaselli
Summary: High-temperature geothermal areas are influenced by regional faults, and the geochemical and isotopic signature of discharged fluids provides important information about the pathways and fluid-rock interaction in geothermal reservoirs. The study of the Larderello geothermal area and surroundings reveals the control of transfer and normal faults on geothermal circulation, including the influence of a cooling magmatic intrusion. The results suggest the presence of deep regional pathways and interaction with shallow aquifers in the peripheral zone emissions.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Physics, Multidisciplinary
S. Innocenti, M. Ricci, D. Quintero Balbas, R. Fontana, J. Striova, M. Becucci
Summary: This study characterized the components of the red dye madder lake using XRD, IR, and UV-Visible spectroscopies, and extracted the dye from painting mock-ups using hydrated and ethanol-rich agar gel beads. The aim of the research was to show the advantages and limitations of Raman spectroscopy and Surface-Enhanced Raman Spectroscopy (SERS) for identifying madder lake constituents in hydrogels used for sample micro-extraction. The main advantage of SERS for madder lake detection is the ability to acquire spectra in random spots in the gel bead without the need for recrystallized grain localization in the dried hydrogel.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Chemistry, Multidisciplinary
Francesca Briani, Francesco Caridi, Francesco Ferella, Anna Maria Gueli, Francesca Marchegiani, Stefano Nisi, Giuseppe Paladini, Elena Pecchioni, Giuseppe Politi, Alba Patrizia Santo, Giuseppe Stella, Valentina Venuti
Summary: We carried out a comprehensive study on micro-fragments of original and previously restored paintings of the San Panfilo Church in Tornimparte, using a multi-scale approach and various techniques. The study aimed to identify the restoration materials used in previous conservation interventions and understand the degradation phenomena of the painted surfaces and architectural structures. Stratigraphic analysis helped evaluate the layers and materials present, and the main result was the identification of various pigments. These findings are crucial for guiding the restoration intervention and ensuring the compatibility of materials.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Francesco Armetta, Dario Giuffrida, Rosina C. Ponterio, Maria Fernanda Falcon Martinez, Francesca Briani, Elena Pecchioni, Alba Patrizia Santo, Veronica C. Ciaramitaro, Maria Luisa Saladino
Summary: This paper presents the findings of an investigation into six microsamples taken from the vault of San Panfilo Church in Tornimparte (AQ). The study aimed to identify the composition of the pigments and protective/varnishes, analyze the executive technique, evaluate the conservation state, and gather evidence of past restoration works. The samples were analyzed using optical microscopy, scanning electron microscopy with energy-dispersive spectroscopy (EDS), X-ray fluorescence (XRF), and infrared and Raman spectroscopy. This investigation was carried out as part of the Tornimparte project Archeometric investigation of the pictorial cycle of Saturnino Gatti in Tornimparte (AQ, Italy), sponsored by the Italian Association of Archeometry (AIAr) in 2021.
APPLIED SCIENCES-BASEL
(2023)
Article
Humanities, Multidisciplinary
Sara Calandra, Teresa Salvatici, Elena Pecchioni, Irene Centauro, Carlo Alberto Garzonio
Summary: The research focuses on the structural masonry in Cultural Heritage and its relation to geo-hydrological hazards. By analyzing the mortars used in a historical embankment wall, the study explores their contribution to damage events and how they affect the structural behavior of masonry. The results of the research help to identify suitable solutions for riverbank containment.
Article
Optics
Cristina Gellini, Marilena Ricci, Alessandro Feis
Summary: This study presents an experimental research on an innovative contrast agent, demonstrating the potential of copper sulfide nanoparticles in photoacoustic imaging. The material shows strong light absorption in the near-infrared range, making it suitable for biological tissue imaging. Evaluating the photochemical conversion efficiency is crucial for achieving proper contrast. The study shows a high efficiency of 1.0 (+/- 0.1), indicating the material's potential for medical imaging applications.
Article
Humanities, Multidisciplinary
Chiara Ciantelli, Alessandro Sardella, Silvia Arroyo Duarte, Elena Pecchioni, Alessandra Bonazza
Summary: This study examines the properties of artificial materials used in the masonry of the UNESCO site of Panama Viejo in Panama City. Using various analysis techniques, the composition and conservation of the materials were determined, providing valuable information for the preservation and restoration of the site.
Article
Engineering, Environmental
Franco Tassi, Paolo S. Garofalo, Filippo Turchetti, Davide De Santis, Francesco Capecchiacci, Orlando Vaselli, Jacopo Cabassi, Stefania Venturi, Stefano Vannini
Summary: This study focuses on the geochemical features of thermal and cold springs in the upstream portion of the Reno river basin in central-northern Italy. It investigates the sources of modern and fossil fluids, as well as the interactions between deep and shallow aquifers. The study suggests a genetic link between quartz-hosted paleofluid and thermal waters in the area.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Chemistry, Analytical
Michel Rocha Baqueta, Augusto Cesar Costa-Santos, Ana Paula Rebellato, Gisele Marcondes Luz, Juliana Azevedo Lima Pallone, Federico Marini, Alexsandro Lara Teixeira, Douglas N. Rutledge, Patricia Valderrama
Summary: This study reports the essential element composition of new Brazilian Canephora coffees and applies chemometric tools for analysis. The results demonstrate the suitability of this method for origin and species discrimination based on the inorganic fraction of coffee.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mengjie Li, Jiapeng Wang, You Zhou, Yang Chen, Lingying Xia
Summary: A novel photoelectrochemical biosensor based on gold nanoparticles and specific structures was developed for highly sensitive detection of mercury ion. The multiple sandwich structures hindered electron supply and light harvesting, resulting in a weakened PEC signal, while the specific structures extinguished the PEC signal, enabling quantitative detection of Hg2+. The sensor exhibited high selectivity and stability, with potential applications in environmental detection, biological analysis, and medical research.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mohamed A. Korany, Rasha M. Youssef, Marwa A. A. Ragab, Mostafa A. Afify
Summary: A stability-indicating fit-for-purpose method was developed for the determination of HC, TL, and PS in syrup dosage form. The method successfully separated CL from THY and quantified the analytes using HPLC-DAD. The robustness of the method was assessed through statistical analysis and self-validation.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Lingling Lin, Minyu Li, Ping Li, Chenqing Ye, Huanglong Zhuang, Shaohuang Weng, Feng Chen
Summary: This study developed a highly sensitive and selective electrochemical sensor for simultaneous detection of dopamine and uric acid. The sensor exhibited excellent anti-interference and stability, and could accurately measure dopamine and uric acid in human urine samples.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Peifang Chen, Caiyun Jiang, Zhouping Wang, Hong-zhen Lian, Xiaoyuan Ma
Summary: In this study, a high-performance SERS-active aptasensor was successfully developed for the quantitative analysis of AFB1 in cereal grains, which is of great significance in the field of food safety.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
E. Abas, C. Marina-Montes, C. Perez-Marin, J. Puimedon, J. Anzano
Summary: This study conducted a comprehensive measurement of natural and anthropogenic radionuclides in soil, water, and air in different locations around Deception Island in Antarctica. The results revealed significant levels of 210Pb and anthropogenic 137Cs in soil samples near old human settlements and facilities, as well as detectable levels of 137Cs and 60Co in water samples from old hunting areas. The findings also suggested potential resuspension processes based on higher-than-expected air quality results.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Joao Franciso Allochio, Nayara A. dos Santos, Nathalia dos S. Conceicao, Clara S. D. Baptista, Keyller B. Borges, Valdemar Lacerda Jr, Wanderson Roma
Summary: This study developed a fiber spray ionization mass spectrometry (FSI-MS) method, which shows great potential in detecting illicit drugs. Compared with paper spray ionization mass spectrometry (PSI-MS), FSI-MS demonstrates higher sensitivity in COC detection.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Dina A. Ahmed, Ola G. Hussein, Mamdouh R. Rezk, Mohamed Abdelkawy, Yasmin Rostom
Summary: The main goal of this study was to develop two green chromatographic techniques, HPLC and TLC, for the determination of alcaftadine (ALF) in pharmaceutical formulation and biological samples. The developed HPLC technique showed high efficiency and minimal environmental impact, successfully identifying ALF in the presence of its degradate. The TLC method provided a stability indicating study for ALF and was determined to be safe, green, and eco-friendly.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Abdullah Taner Bisgin
Summary: A green, speedy, and handy method for separation and determination of four commonly used food colorants was established using vortex assisted sequential-simultaneous liquid phase micro-extraction (VA-SS-LPME). The method does not require any instrumental chromatographic techniques. The procedure includes sequential separation steps using different extractants and simultaneous UV-vis spectrophotometric determination steps. The method is environmentally friendly and applicable for determination of colorants in food and pharmaceuticals.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Yifan Zhang, Tong Zhang, Wenjing Ba, Li Liu, Yuan Rao, Xiaodan Zhang, Hanhan Zhang, Xiu Jin
Summary: This paper proposes a novel spectral transfer modelling method based on neural network architecture searching for the asymptomatic prediction of Akizuki pear cork spot disorder. The experiments show that the model by this method is more effective, achieving an accuracy of 82.61%.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: For the first time, a dispersive micro-solid phase extraction (D-mu SPE) based on graphene oxide was used for the ultrasensitive determination of Cd. With this method, Cd can be efficiently extracted from a mixture of alkali and alkaline earth metals without the need for an elution step. The combination of D-mu SPE and SAGD OES significantly reduces matrix effects and improves the tolerance of Cd to alkali metals. The method shows simplicity in the measurement system and the commercially available nanosorbent used.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
P. K. Fathima Anjila, G. R. Tharani, Anand Sundaramoorthy, Venkat Kumar Shanmugam, Karthikeyan Subramani, Shanmugavel Chinnathambi, Ganesh N. Pandian, Vimala Raghavan, Andrews Nirmala Grace, Singaravelu Ganesan, Mangaiyarkarasi Rajendiran
Summary: This work proposes a rapid and sensitive spectroscopic method for detecting melamine in food products using rare-earth Terbium-doped Graphene Quantum Dots (Tb-GQDs) synthesized by microwave and simple chemical conjugation methods. The synthesized Tb-GQDs show a spherical shape with a size of approximately 6 nm and a quantum yield of 52%. The maximum detection limit for melamine concentration in milk and milk products is found to be 0.31 μM. The dual emitting Tb-GQDs provide a sensitive and effective platform for real-time detection of melamine in food samples, particularly in milk, and show promising potential in the food industry.
MICROCHEMICAL JOURNAL
(2024)
Review
Chemistry, Analytical
Piyush Dey, Mandeep Kaur, Akhil Khajuria, Dilmeet Kaur, Manpreet Singh, Hema Kumari Alajangi, Neha Singla, Gurpal Singh, Ravi Pratap Barnwal
Summary: Environmental issues, such as the uncontrolled release of dangerous pollutants, have significant impacts on human health. Traditional methods for detecting pollutants require specialized personnel and equipment, but nanotechnology has improved the performance of biosensors. This article discusses the use of nanotechnology in pollutant detection and the associated techniques.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Sa Dong, Qiuyun Shi, Lingjun Guan, Yulong Wang, Pengyan Liu, Cunzheng Zhang, Jianguo Feng
Summary: In this study, a highly sensitive indirect competitive chemiluminescence enzyme immunoassay (icCLEIA) method was developed for the determination of sodium pentachlorophenolate (PCP-Na) and its metabolite pentachlorophenol (PCP). The method showed high specificity and affinity with a detection limit of 0.0032 ng/mL for PCP-Na and 0.0192 ng/mL for PCP. The method had no cross reaction with other chlorophenols compounds except for PCP. The average recoveries in chicken, pork and fish samples were 81.3-105.8% with low coefficient of variation (CV).
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Palaniappan Ilayaraja, Murugan Manivannan, Paramasivam Parthiban
Summary: Nirmatrelvir, an antiviral drug used for the treatment of COVID-19, has been recommended by the World Health Organization. We developed an optimized analytical method for the quantification of Nirmatrelvir and its products, with high sensitivity and a wide linear range. The method also meets the requirements for greenness evaluation.
MICROCHEMICAL JOURNAL
(2024)