Article
Chemistry, Analytical
Raquel Marques, Michel Sablier, Jaap J. Boon, Gauthier Rose, Leslie Carlyle, Isabel Pombo Cardoso, Laurence De Viguerie
Summary: This study analyzed brown bitumen oil paint reconstructions based on 19th century production records using thermal chemical analysis methods. It found that the asphalt markers in Trinidad Lake asphalt (TLA) were no longer detectable after heat processing, providing a possible explanation for the lack of evidence in previous studies.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
A. Marcilla, D. Berenguer, I. Martinez
Summary: Five potential additives, including three zeolites and two silicates, have been studied for reducing harmful compounds generated when smoking Heet tobacco. The results show that USY and SBA-15 additives exhibit significant reductions, with SBA-15 showing the largest reduction in total particle matter.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Engineering, Environmental
Yanghui Xu, Qin Ou, Xintu Wang, Feng Hou, Peng Li, Jan Peter van der Hoek, Gang Liu
Summary: This study used pyrolysis gas chromatography-mass spectrometry to determine the mass concentrations of microplastics (MPs) and nanoplastics (NPs) in two wastewater treatment plants (WWTPs). The results showed that the mass concentrations of total MPs and NPs decreased during the treatment process, with NPs having a lower removal efficiency than MPs. It was estimated that approximately 0.321 and 0.052 tons of MPs and NPs were released into the river each year based on the annual wastewater effluent discharge. Overall, this study provided valuable information about the pollution level and distribution characteristics of MPs, especially NPs, in WWTPs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zechen Li, Yan Gao, Qihang Wu, Bing Yan, Xiaoxia Zhou
Summary: This study developed a simple and robust protocol for the extraction of PS-NPs from environmental solid samples using Py-GC/MS technique. It was found that environmental solid matrices can serve as important sources and sinks of NPs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Thermodynamics
Yuan Jiang, Peijie Zong, Bin Tian, Xue Ming, Fanfan Xu, Yuanyu Tian, Yingyun Qiao, Dawei Li, Qingshuo Song, Qiankun Yu
Summary: Studying the pyrolysis behavior of the saturate component in coal, which mainly consists of volatile substances, through the combined utilization of TG-FTIR and Py-GC/MS revealed a free radical reaction mechanism. The research provides a methodological model for exploring other group components and reveals specific details about the pyrolysis of coal.
Article
Thermodynamics
Jana Ruzickova, Helena Raclavska, Dagmar Juchelkova, Marek Kucbel, Konstantin Raclavsky, Barbora Svedova, Michal Safar, Christoph Pfeifer, Jitka Hrbek
Summary: This paper aims to find a simple way to identify the addition of unauthorized waste (plastics) in residential boilers burning wood as the main fuel. The study found that the burning of plastics leaves a trace in char deposits, and the presence of combusted plastics can be identified by analyzing unique organic compounds formed during the pyrolysis phase of combustion using pyrolysis gas chromatography. By sampling char in boilers and analyzing samples for markers of plastics incineration, this method can be used by authorities to identify unauthorized waste combustion.
Article
Biochemistry & Molecular Biology
Tae Uk Khang, Min-Jae Kim, Jee In Yoo, Yu Jung Sohn, Sang Goo Jeon, Si Jae Park, Jeong-Geol Na
Summary: This study developed an analysis method using Py-GC/MS to determine PHA contents and monomer composition in microbial cells, providing a rapid and reliable approach for such analysis.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biotechnology & Applied Microbiology
Avnish Kumar, Bijoy Biswas, Ramandeep Kaur, Bhavya B. Krishna, Bhaskar Thallada
Summary: Utilization of biomass for energy production has gained attention for its environmental importance. In Loktak lake in India, the growth of paragrass, phumdi, and water hyacinth has a negative impact on ecological stability, prompting the need for effective conversion processes. Analysis showed that the pyrolysis of water hyacinth and paragrass mixture yielded the highest carbonyls, while phumdi had the highest amount of heterocyclic compounds and phenolics.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Weijie Xu, Jingyong Liu, Ziyi Ding, Jiawei Fu, Fatih Evrendilek, Wuming Xie, Yao He
Summary: This study characterized and verified the pyrolysis mechanisms and volatiles products of medical mask belts, mask faces, and infusion tubes. The results are important for the treatment of medical wastes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Applied
Jiaxing Song, Kai Sun, Qunxing Huang
Summary: This study investigated the influence of thermal aging on the pyrolysis oil fuel components of typical waste plastics, showing that the impact varies depending on the type of plastic. After thermal aging, PE and PP exhibited more significant changes in heavy oil fraction compared to light oil and diesel oil fractions, while PVC samples showed structural defects and a color change.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Yiyang Li, Erdong Liu, Haiping Gu, Junwei Lou, Yafeng Yang, Longhai Ban, Wanxi Peng, Shengbo Ge
Summary: Energy is essential for human life and social development, but the overconsumption of non-renewable energy has become a problem. Sustainable energy is needed to maintain global energy balance. Lignocellulosic biomass, such as discarded agricultural and forestry waste, can be studied as a potential energy source. This research uses Staphylea holocarpa wood as feedstock and characterizes it using various analytical techniques. The results demonstrate that Staphylea holocarpa wood contains oxygenated volatiles, indicating its potential as a biomass energy source for green chemistry and sustainable development.
Article
Chemistry, Analytical
Yuanyuan He, Arnaud Buch, Cyril Szopa, Amy Williams, Caroline Freissinet, Melissa Guzman, David Boulesteix, Maeva Millan, David Coscia, Jean-Yves Bonnet, Michel Cabane
Summary: The SAM instrument on Curiosity and the MOMA instrument on ExoMars are two of the most important instruments used for the in-situ search for biosignatures of life on Mars. This study focuses on identifying thermochemolysis products and determining optimal temperatures for nucleotide detection using TMAH. Results show that methylated nucleosides can be detected at low abundances at 200 degrees C. These experiments will provide important references for future missions on Mars.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Engineering, Environmental
Fangfang Lou, Jun Wang, Chen Sun, Jiaxing Song, Wanli Wang, Yuhan Pan, Qunxing Huang, Jianhua Yan
Summary: Accurate identification and quantification of microplastics (MPs) is challenging yet crucial. This study used pyrolysis gas chromatography mass spectrometry (Py-GC/MS) to detect five common types of MPs and investigated the thermochemical interactions during co-pyrolysis of different plastics. The results showed that previous indicators for quantitative analysis may lead to high uncertainty, but new indicators were proposed in this study to improve accuracy. The maximum quantification uncertainties of PE, PP, and PS were successfully reduced.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Thermodynamics
Tao Yan, Hui Ren, Qingzhong Cui, Yapeng Ou, Fayang Guan
Summary: The interfacial reaction between nano-aluminum and fluoropolymer was studied, and it was found that nAl particles react with the decomposition products of Viton, resulting in heat generation and providing the main advantage of energy release.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Ryan D. Merckel, Mike D. Heydenrych, Bruce B. Sithole
Summary: The study presents an advancement in Py-GC/MS with EGA-MS, allowing prediction of elemental composition and calorific content of pyrolysis products. It reduces the need for other analytical methods and demonstrates the impact of various catalysts on pyrolysis oil. Different dominant mechanisms, changes in elemental composition, and effects on calorific value were observed.
Article
Architecture
Barbara Sacchi, Silvia Vettori, Alessia Andreotti, Laura Rampazzi, Maria Perla Colombini, Piero Tiano
Summary: This study tested the effectiveness of silane/siloxane emulsions with different formulations in the water repellent treatment of the Matera Cathedral facade. Through laboratory and on-site testing, the performance parameters were evaluated, and the results showed that the mixture of silane/siloxane and acrylic polymer had better water repellent effect.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2022)
Article
Energy & Fuels
Elisabetta Parodi, Jacopo La Nasa, Erika Ribechini, Antonella Petri, Oreste Piccolo
Summary: This study chemically characterized flax cake, camelina cake, and sunflower cake to evaluate the composition of proteins and residual oil, and explore further technological applications for these biowastes. A deep eutectic solvent was developed as a green alternative for protein extraction, while n-hexane was used for lipid extraction. Various analytical techniques were employed to characterize the cakes and extracts. Protein extraction with the deep eutectic solvent and water precipitation yielded higher yields for flax cake and camelina cake. Different acyl glyceride profiles were identified in the residual oils extracted from the cakes.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Daniela Pinna, Susanna Bracci, Donata Magrini, Barbara Salvadori, Alessia Andreotti, Maria Perla Colombini
Summary: This study conducted complex research on the sources of brown discolorations that occur on marble statues of the Church of Orsanmichele in Florence, Italy. Different substances were used to treat Carrara marble model specimens in order to simulate their effects on the stone, with linseed oil, milk + linseed oil, and milk + linseed oil + ammonium oxalate showing severe color changes after aging. Additionally, the study identified the chemical products of oxidation processes induced by aging, as well as the Maillard reaction likely occurring in milk-containing specimens.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Correction
Archaeology
A. Sansonetti, A. Andreotti, M. Bertasa, I. Bonaduce, C. Corti, L. Facchin, J. La Nasa, A. Spiriti, L. Rampazzi
Summary: Composite materials are made by combining different substances with unique properties. Stucco, for example, is a composite material composed of aggregate, binder, and water, and can be enhanced with organic additives. The term "stucco" has different meanings in different countries, but in Italian literature, it refers to any plaster used for decorative purposes.
JOURNAL OF CULTURAL HERITAGE
(2022)
Correction
Archaeology
A. Sansonetti, A. Andreotti, M. Bertasa, I Bonaduce, C. Corti, L. Facchin, J. Lanasa, A. Spiriti, I. Rampazzi
JOURNAL OF CULTURAL HERITAGE
(2022)
Article
Chemistry, Analytical
Lorenzo Vannoni, Silvia Pizzimenti, Giulia Caroti, Jacopo La Nasa, Celia Duce, Ilaria Bonaduce
Summary: In this study, a methodological approach for investigating the molecular features of oil paint layers upon curing was implemented using a simplified model of oil binder. Various mass spectrometric techniques were used to analyse the compounds produced during natural aging, revealing the crucial differences in stability between paint layers containing different pigments, particularly related to the cross-linked fraction.
MICROCHEMICAL JOURNAL
(2022)
Article
Humanities, Multidisciplinary
Kaare Lund Rasmussen, Johannes van der Plicht, Ilaria Degano, Francesca Modugno, Maria Perla Colombini, Guillermo de la Fuente, Thomas Delbey, Amos Frumkin, Uri Davidovich, Roi Porat, Orit Shamir, Naama Sukenik, Greg Doudna, Joan Taylor, Mladen Popovic
Summary: This study reports on interdisciplinary archaeometrical analyses of objects found in the Christmas Cave, revealing the history and cultural background of the cave. The study found evidence of human occupation or visitation in the cave from around 4000 BCE to the Medieval period, including a refuge episode connected to the First Jewish Revolt. The results highlight the importance of archaeometric studies in cave environments where stratigraphy is absent.
Article
Chemistry, Analytical
Francesca Sabatini, Iacopo Corsi, Alessio Ceccarini, Marco Brillanti, Maria Perla Colombini, Ilaria Bonaduce
Summary: This paper investigates the characterization and identification of metal-free leather using pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). Thirty-three bovine split leather samples tanned with various metal-free tanning agents were analyzed, and pyrolytic markers were determined in reference materials, intermediates, and end-products. Evolved gas analysis coupled with mass spectrometry was used to compare the thermodegradative profiles of metal-free leathers and chromium tanned leather.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Analytical
Marco Mattonai, Lucia Andrei, Marian Virgolici, Erika Ribechini
Summary: We used EGA-MS to analyze different varieties of ambers and obtained information on their non-polymeric and polymeric components. The results showed characteristic signals for the different fractions and allowed us to classify most of the samples. Principal component analysis differentiated between succinite and rumanite ambers. EGA-MS is a reliable technique for studying the molecular composition of ambers.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Analytical
Irene Bertelli, Marco Mattonai, Jacopo La Nasa, Erika Ribechini
Summary: In this study, the interactions between beeswax and resinous materials under heating were investigated to understand their effect on adhesive properties, and compared with archaeological samples to gain insights into ancient technological knowledge. The results suggested that thermal pre-treatment of archaeological mixtures led to the formation of hybrid species between resin diterpenes and the beeswax compounds, resulting in a material with new chemical features.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Multidisciplinary Sciences
Ophelie Ranquet, Celia Duce, Emilia Bramanti, Patrick Dietemann, Ilaria Bonaduce, Norbert Willenbacher
Summary: The authors use a combination of egg yolk and two pigments to investigate how different distribution of proteinaceous binder can control the flow behavior, drying kinetics, and chemistry of oil paints. This study demonstrates that adjusting the distribution of proteinaceous binder can enhance the stiffening effect and prevent undesired absorption of humidity, improving the brushability and preserving invaluable artworks.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Alessia Andreotti, Francesca Caterina Izzo, Ilaria Bonaduce
Summary: The archaeometrical study of Saturnino Gatti's wall paintings focused on the study of the organic component, in order to understand the original binders used and the products used for restoration. Through non-invasive and multi-band imaging techniques, Gatti's original painting technique was identified, and the materials used in restoration were analyzed using mass spectrometry. The analysis revealed the presence of synthetic organic materials, with paraffin being commonly used as a coating/consolidant.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Karel Kudlacek, Jacopo La Nasa, Erika Ribechini, Maria Perla Colombini, Karel Nesmerak
Summary: A multi-analytical approach was used for the first time to study six historical ointments from the 18th century of Capuchin Monastery in Prague, Czech Republic. The analysis involved gas chromatography, mass spectrometry, solid-phase microextraction, liquid chromatography, and flow injection analysis to identify ingredients and determine the chemical modifications. The results provided insights into the ointments' formulation and alteration of chemical compounds.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Federica Nardella, Jens Prothmann, Margareta Sandahl, Peter Spegel, Erika Ribechini, Charlotta Turner
Summary: In this study, supercritical fluid extraction (SFE) and CO2-expanded liquid extraction (CXLE) were used to extract lignin from softwood and hardwood chips. Ethanol, acetone, and ethyl lactate were investigated as green organic co-solvents in the extractions. The optimized method using liquid CO2/acetone/water (10/72/18, v/v/v), at 60°C, 350 bar, 30 min, and 2 mL/min flow rate, successfully detected 13 lignin monomers and 6 lignin dimers from the hardwood chips. These results demonstrate the potential of supercritical fluids and green solvents in the mild and benign extraction of lignin from wood.
Article
Humanities, Multidisciplinary
Anna Lluveras-Tenorio, Alessia Andreotti, Fabio Talarico, Stefano Legnaioli, Luca M. Olivieri, Maria Perla Colombini, Ilaria Bonaduce, Simona Pannuzi
Summary: The research investigates the materials and techniques of Gandharan art through chemical analysis of samples taken from stucco architectural decorations, shedding light on ancient painting techniques and artistic technologies. The aim is to understand the influences exerted on this Buddhist ancient art from Eastern and Western artistic traditions.
Article
Physics, Atomic, Molecular & Chemical
Daniel D. Vallejo, Joseph L. Corstvet, Facundo M. Fernandez
Summary: Electrospray ionization (ESI) is a popular method for generating ions in mass spectrometry (MS). The use of triboelectric nanogenerators as power sources for ESI shows promise in improving the analytical capabilities. This review highlights the fundamentals of ESI driven by DC power supplies, the contrasting qualities to triboelectric nanogenerator power supplies, and its applications in forensics, metabolomics, and protein structure analysis.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2024)
Article
Physics, Atomic, Molecular & Chemical
Florian Kluibenschedl, Anna Ploner, Christina Meisenbichler, Robert Konrat, Thomas Mueller
Summary: Mass spectrometry imaging (MSI) is a powerful analytical technique for localizing chemicals on surfaces. A new interactive approach, called interactive mass spectrometry imaging (IMSI), has been developed using a pen-like ionization interface connected to a mass spectrometer. This approach allows for real-time tracking of the pen's motion on a surface to obtain chemical data. The IMSI method was successfully tested on inkjet-printed letters and mouse brain tissue samples.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2024)
Article
Physics, Atomic, Molecular & Chemical
Shubhangee S. Gaikwad, Saurabh D. Kalkate, Amruta A. Bankar, Amol S. Bansode
Summary: A stable high-performance thin layer chromatographic technique was developed and validated for estimating the content of Paracetamol and Prochlorperazine. The method was validated according to the International Conference on Harmonization requirements. The study also investigated the degradation products of the drugs.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2024)
Article
Physics, Atomic, Molecular & Chemical
Ioan Marginean
Summary: In this study, a coherent classification of electrospray axial regimes is provided based on non-linear fluid dynamics. This classification includes periodic, transient/chaotic, and stationary regimes, and emphasizes the importance of spray current measurements and electrospray characteristic curves in diagnosing the operation and transitions between these regimes. The effect of the electrospray operating regime on the mass spectrometer signal is also summarized.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2024)
Article
Physics, Atomic, Molecular & Chemical
Le Thao Anh Nguyen, Chris J. Bowen, Laura Burchill, Spencer J. Williams, Richard A. J. O'Hair
Summary: D-Cysteinolic acid (D-CA) is an important metabolite in the biosulfur cycle, while a structural isomer, (R)-3-amino-2-hydroxypropanesulfonate ((R)-AHPS), is less common. Through mass spectrometry and density-functional theory, this study reveals the fragmentation reactions of these two isomers and methods to distinguish them.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2024)
Article
Physics, Atomic, Molecular & Chemical
Frank J. Wensink, Deepak Pradeep, P. B. Armentrout, Joost M. Bakker
Summary: Methane and cyclopropane were reacted with Ru+ ions, and the resulting products were identified and characterized using mass spectrometry, IR action spectroscopy, and density functional theory calculations.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2024)
