Article
Chemistry, Analytical
Weizhu Chen, Wenhui Jin, Hua Fang, Hui Chen, Xiaoying Chen, Yiping Zhang, Zhuan Hong
Summary: This paper describes the development of a taurine purity certified reference material (CRM) based on ISO principles. The CRM was characterized using mass balance and quantitative nuclear magnetic resonance spectroscopy. The results showed that the CRM had sufficient homogeneity and remained stable under certain conditions. It can validate analytical measurements in laboratories to ensure accuracy, traceability, reliability, and comparability of results.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Jian Zhou, FuKai Li, Min Wang, ChenBin Yan, MengRui Yang, TongTong Wang, LiYuan Zhang
Summary: A novel purity certified reference material (CRM) of clorprenaline (GBW 09255) has been developed using the mass balance method, differential scanning calorimetry (DSC), and quantitative nuclear magnetic resonance spectroscopy (QNMR). The CRM has been characterized and the uncertainty evaluated, showing good homogeneity and stability. This developed CRM can effectively support method validation, proficiency testing, and nationwide quality monitoring.
MICROCHEMICAL JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Chen He, Qin Gao, Changwen Ye, Guotao Yang, Pengfei Zhang, Rongchao Yang, Qing Zhang, Kang Ma
Summary: In this paper, an improved method was established for the determination of three impurities in vinyl acetate, using the mass balance method. Gas chromatography tandem high-resolution mass spectrometry was used to identify the impurities as methyl acetate, ethyl acetate, and vinyl propionate. The purity of vinyl acetate was determined to be 99.90% with an expanded uncertainty of 0.30%, and the total content of organic impurities was 0.08% with a relative correction factor of 1.23%. The vinyl acetate reference material has been certified as GBW (E) 062710 in China.
Article
Biochemical Research Methods
Xianxia Wang, Liqing Wu, Yanjie Huang, Ping Su, Yi Yang, Bin Yang, Ning Zhang
Summary: This article introduces a human insulin certified reference material developed by the National Institute of Metrology. Various methods were used to analyze and verify the properties of the material, demonstrating its stability and accuracy. The certified reference material can be used for quality control in biopharmaceutical production and clinical diagnostics.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Weizhu Chen, Hua Fang, Wenhui Jin, Hui Chen, Zhichao Lin, Xiaoying Chen, Yiping Zhang, Hong Zhuan
Summary: A new certified reference material (CRM) of squalene has been developed using a mass balance approach and quantitative nuclear magnetic resonance technique. The CRM has undergone investigation for preparation, structure determination, characterization, homogeneity, stability studies, and uncertainty evaluation in compliance with ISO guidelines. The developed squalene CRM with a certified value of 99.4% and an expanded uncertainty of 0.2% (k = 2) has demonstrated stability for 12 months at -20 degrees C and 14 days at 50 degrees C. It serves as an effective support for method validation, intercomparison, quality control, and metrological traceability in the food, pharmaceutical, and cosmetic industries.
MICROCHEMICAL JOURNAL
(2023)
Article
Medical Laboratory Technology
Giorgia Bianchi, Erika Frusciante, Giulia Colombo, Ilenia Infusino, Elena Aloisio, Mauro Panteghini
Summary: This study validated the feasibility of Alinity enzyme assays and found a positive proportional bias in ALP2 and ALP2F compared to ALP1 and RMP. The measurement uncertainty associated with ALP measurements did not meet the established analytical performance specifications. Additionally, the commutability of ConCC with clinical samples was not confirmed.
CLINICAL CHEMISTRY AND LABORATORY MEDICINE
(2023)
Review
Engineering, Marine
Francesca Rolle, Francesca Romana Pennecchi, Francesca Durbiano, Stefano Pavarelli, Chiara Musacchio, Graziano Coppa, Andrea Merlone, Michela Sega
Summary: Monitoring the state of oceans and their evolution is crucial due to climate change. Metrology can assist oceanographers in consolidating measurement approaches to ensure comparability of data acquired in different conditions. Joint research projects can support measurement capabilities in marine research worldwide.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Analytical
A. Durga Prasad, S. Thangavel, Lori Rastogi, D. Soni, K. Dash, Sunil Jai Kumar
Summary: The paragraph discusses the production of certified reference materials for trace elements in quartz matrix by NCCCM and NPL in India to assess the performance of analytical methods and ensure comparability of measurements between laboratories. Through homogeneity testing and inter-laboratory comparison, certified values were established.
MICROCHEMICAL JOURNAL
(2022)
Article
Biochemical Research Methods
Yoshitaka Shimizu, Taichi Yamazaki, Xinnu Bao, Satoe Nakamura, Toshihide Ihara, Nobuyasu Itoh, Masahiko Numata
Summary: We developed a high-purity trichloroacetic acid reference material to be used as a traceability source for standard solutions. We confirmed that water in trichloroacetic acid can be detected as an impurity using the freezing point depression method. The reliability of the method was verified by comparing results with other measurement principles.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
Fang Wang, Yushu Shi, Wei Li, Xiao Deng, Xinbin Cheng, Shu Zhang, Xixi Yu
Summary: This article introduces the importance of line width in integrated circuits, the development of a new reference material, and a measurement method. The experiments prove the effectiveness and feasibility of the proposed method.
Article
Chemistry, Analytical
Iti Gaur, Pooja Gaur, Parul Gautam, Neerja Tiwari, Puja Khare, Sarita Tripathi, Karuna Shanker
Summary: A rapid procedure was developed for the separation of andrographolide from Andrographis paniculata leaves to provide a certified reference material (CRM), ensuring the quality and efficacy of A. paniculata derived medicinal products. The study illustrated the authentication, sample preparation, homogeneity, storage stability, trueness and reliability assignment by uncertainty measurement of andrographolide using high performance liquid chromatography (HPLC).
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Applied
Weizhu Chen, Wenhui Jin, Yiping Zhang, Hua Fang, Hui Chen, Hong Zhuan, Xiaoyan Huang
Summary: Certified reference materials (CRMs) with high accuracy and traceability are essential for validating analytical methods and calibrating equipment. This study developed purity CRMs for four polyunsaturated fatty acids esters and determined their purity values using quantitative nuclear magnetic resonance and mass balance approaches, demonstrating high precision and reliability.
Article
Engineering, Multidisciplinary
Pawel Ziolkowski, Przemyslaw Blaschkewitz, Eckhard Mueller
Summary: This article discusses the applicability of commercially available Bi2Te3-based TEM as metrological reference samples by testing the stability of four different types of TEM from different manufacturers. Significant differences were observed in the stability of the modules, ranging from very stable to relatively weak stability, providing insights into the performance of each module.
Article
Chemistry, Analytical
Ting Huang, Hongmei Li, Wei Zhang
Summary: China has formulated a metrological technical specification for the purity assessment of organic pure substance certified reference materials, which includes various methods such as mass balance, nuclear magnetic resonance, and differential scanning calorimetry. The specification introduces new classifications and combination approaches, which provide inspiration and guidance to developers of organic pure substance CRMs worldwide.
ACCREDITATION AND QUALITY ASSURANCE
(2021)
Article
Biochemistry & Molecular Biology
Weizhu Chen, Yiping Zhang, Hui Chen, Wenhui Jin, Xiaoying Chen, Xiaoyan Huang, Yanrou Xie, Hua Fang, Zhuan Hong
Summary: A new certified reference material (CRM) of D-mannitol has been developed, with detailed descriptions of its preparation, structure determination, characterization, homogeneity study, stability study, and uncertainty estimation. The CRM exhibited high purity and stability, effectively supporting method validation and proficiency testing, and ensuring the accuracy and comparability of results.
Review
Chemistry, Analytical
Claudia Campanale, Silvia Galafassi, Francesca Di Pippo, Iulian Pojar, Carmine Massarelli, Vito Felice Uricchio
Summary: Biodegradable plastic mulches (BDMs) have the potential to be an eco-friendly alternative to conventional plastic mulches in agriculture. However, their long-term impacts on soil ecosystems are still uncertain, and further research is needed. Incorporating BDMs into the soil may stimulate microbial activity, but there is also a risk of incomplete degradation and release of residual microplastics and additives.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Xuechi Yin, Sijie Liu, Deepak Kukkar, Jianlong Wang, Daohong Zhang, Ki-Hyun Kim
Summary: The lateral flow immunoassay strip is a classic and dominant tool in point-of-care detection, known for its portability and simplicity. However, current colored nanomaterials used as signal labels in LFIA have limited sensing potential, leading to the recognition of composite nanoparticles as alternatives to enhance sensitivity, signal readout diversity, anti-matrix interference, and cost-effectiveness.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Yaxin Cao, Longyi Shao, Timothy P. Jones, Wenjing Deng, M. Santosh, Pengju Liu, Cheng-Xue Yang, Yaowei Li, Daizhou Zhang, Kelly Berube
Summary: The toxicity of fibrous particles in ambient air can be higher than other types of particles. Microfibers can be organic or inorganic and their presence in the atmosphere as a result of human activity raises concerns for environmental and public health. Accurate collection, identification, and understanding of the health hazards associated with these fibers are crucial for mitigation strategies and protection of public health.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Chenchen Xie, Chen Meng, Huilin Liu, Baoguo Sun
Summary: The development of food hazard factor (FHF) detection has been moving towards on-site inspection and mobile law enforcement, calling for simple, fast, and affordable analysis technology to ensure food safety and quality. This review comprehensively summarizes the progress in research on smartphone-assisted MIP optosensors, focusing on the key issues of accuracy and sensitivity.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Guillem Peris-Pastor, Cristian Azorin, Jose Grau, Juan L. Benede, Alberto Chisvert
Summary: Green Analytical Chemistry plays an important role in every stage of method development, including sample preparation. Extraction techniques have evolved from conventional ones to a variety of miniaturized techniques in order to enhance analytical performance and ensure safety for operators and the environment. Green metric tools are used to evaluate the impact and sustainability of methods, with AGREEprep selected as the most suitable tool for evaluating published methods in various applications. The miniaturization of sample preparation strategies has led to the use of less and safer solvents, reduced waste generation and energy consumption, and improved portability and throughput.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Helena Hruskova, Roman Reminek, Frantisek Foret
Summary: This review article summarizes the progress and recent studies in offline electromigration preparative techniques between 2018 and 2023. It covers various techniques including electrophoresis, free-flow electrophoresis, isoelectric focusing, and isotachophoresis, providing theoretical aspects, trends, and solutions to existing limitations in each technique.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Mayank Garg, Nicole Pamme
Summary: This review focuses on the removal strategies of templates from molecularly imprinted polymers (MIPs) used in diagnostic biosensors. Chemical-based and electrochemical-based template extraction approaches are summarized and evaluated, providing guidance for researchers in the fields of analytical chemistry, diagnostics, and materials science for the design of MIP-based sensors.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Ivneet Banga, Anirban Paul, Nathan Kodjo Mintah Churcher, Ruchita Mahesh Kumar, Sriram Muthukumar, Shalini Prasad
Summary: Breathomics is an emerging field that focuses on analyzing exhaled breath to diagnose and monitor respiratory diseases. Electrochemical sensors, with their high sensitivity, selectivity, and low cost, play a significant role in breathomics and can be integrated into portable devices for point-of-care diagnosis.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Fabjola Bilo, Paola Cirelli, Laura Borgese
Summary: This review explores the application of X-ray fluorescence (XRF) spectrometry for elemental analysis of particulate matter (PM) in air quality monitoring. It discusses the fundamentals of XRF, experimental configurations, PM sampling devices and substrate, sample preparation strategies, qualitative and quantitative analysis, as well as the challenges faced by XRF in becoming a reliable analytical technique for PM analysis.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Hakim Faraji
Summary: The dispersive liquid-liquid microextraction (DLLME) technique is widely popular in analytical chemistry due to its high efficiency, cost-effectiveness, and simplicity. Recent advancements have addressed the limitations of DLLME, incorporating greener solvents, innovative dispersion strategies, and simplified procedures. These changes have made DLLME a more sustainable and efficient technique.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Sherin F. Hammad, Inas A. Abdallah, Alaa Bedair, Reda M. Abdelhameed, Marcello Locatelli, Fotouh R. Mansour
Summary: Carbon nanomaterials (CNMs) have excellent capabilities in terms of adsorption, enhanced oxidation, and photocatalysis, attracting widespread attention in different fields. Metal-organic frameworks (MOFs) have been widely used due to their regular network structure, porous nature, and large specific surface area. However, the instability of MOFs in aqueous solutions limits their applications in chemical sensing. Recent studies have focused on increasing the stability of MOFs in water-based matrices through chemical modifications using CNMs.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Alexandra Pape, Oliver J. Schmitz
Summary: Low temperature plasmas based on dielectric barrier discharges have emerged as a recent development in ion source research. These ion sources are applicable to heat-sensitive analytes and can ionize a wide range of compounds. Despite intensive research on important parameters such as configuration, shape, size, and materials in the past two decades, the actual ionization mechanism for all plasma gases has not been fully elucidated. This review provides an overview of atmospheric pressure ion sources, with a focus on plasma and dielectric barrier discharge based ion sources, summarizing the reactions occurring in the plasma and discussing the applications developed by different research groups.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Hai Xiong, Fengli Li, Linyu Zeng, Qiyu Lei
Summary: This review provides an overview of the emerging trends in the use of functional COF nanomaterials as biosensors for DNA/RNA detection. It summarizes the construction of DNA/RNA hybridized COF nanoprobes and their potential applications in bioanalyte detection, biosensing, biomarker imaging, and clinical biomedicine.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Bing Yan
Summary: This article summarizes the recent progress in logic gate computing and operation based on multiple luminescence response and chemical sensing for lanthanide functionalized MOF hybrid systems. The article first describes multi-color luminescence and the subsequent multiple luminescence response. The basic concept of logic gate operation and the advantages of lanthanide-based hybrid materials are then introduced. Reports on logic gate operation using pure lanthanide MOFs are provided, followed by a detailed summary of logic gate operations using lanthanide functionalized MOF hybrid materials. Additionally, the article discusses the practical luminescent detection of analytes by correlating the luminescence responsive signals and the concentration of different analytes. Finally, the article concludes with a prospect for this topic.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Brij Mohan, Gurjaspreet Singh, Rakesh Kumar Gupta, Pawan Kumar Sharma, Alexander A. Solovev, Armando J. L. Pombeiro, Peng Ren
Summary: Porous materials, particularly hydrogen-bonded organic frameworks (HOFs), have gained significant attention due to their versatile applications and unique properties such as well-defined crystalline structure and easy regeneration processes. This article provides a comprehensive overview of HOFs, including synthesis methods, hydrogen bonding motifs, recent advancements, and potential applications, offering valuable guidance for further exploration in this dynamic field.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)