Article
Biochemical Research Methods
Huijun Liu, Xueqian Hu, Jingkun Zhang, Hongyu Ning, Zhongping Huang
Summary: A solid phase microextraction coupled with flash evaporation GC/MS technique was developed for quantitative determination of PAHs in water samples from Beijing-Hangzhou Grand Canal. The method showed good analytical performance and suitability for trace determination of PAHs in water.
Article
Chemistry, Applied
Fangyuan Hou, Qingyun Chang, Nana Wan, Jie Li, Xiaohuan Zang, Shuaihua Zhang, Chun Wang, Zhi Wang
Summary: A novel porphyrin-based conjugated microporous polymer was synthesized and used as a coating material for solid-phase microextraction fibers. The fibers were successfully applied for the extraction of phthalate esters (PAEs) from children's milk beverages, with low detection limits and good recoveries.
Article
Biochemical Research Methods
Huijun Liu, Xinying He, Xueqian Hu, Baoquan Pan, Zhongping Huang, Jian Shen
Summary: Hollow fiber-solid phase microextraction combined with micro sample collector assisted injection technique was developed for the detection of trace fatty acid methyl esters in biodiesel wastewater. The method has the advantages of simple operation, low cost, and environmental friendliness.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Biochemical Research Methods
Fatemeh Zanganeh, Yadollah Yamini, Mohammad Mahdi Khataei, Alireza Badiei
Summary: The current study presents the synthesis and characterization of a high surface area and uniform-porosity material, periodic mesoporous organosilica (PMO). The PMO was immobilized on a stainless steel wire surface and used for solid-phase microextraction of phthalate esters. The method showed good repeatability, low detection limits, and acceptable recovery values in different sample matrices.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Dechang Wu, Fu Liu, Tong Tian, Jian-Feng Wu, Guang-Chao Zhao
Summary: The novel fiber coating prepared from CuFe2O4 nanoparticles resulting from a facile citrate-nitrate combustion method was successfully utilized for sensitive detection of phthalate esters in aqueous media through a direct immersion solid-phase microextraction (DI-SPME) method. The method showed efficient extraction of PAEs with optimized conditions, and the prepared fiber exhibited good stability and long lifetime with repeatability in the analysis of mineral water samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Xiaohuan Zang, Mengting Wang, Qingyun Chang, Chun Wang, Zhi Wang, Jianzhong Xu
Summary: A porous boron nitride with a large surface area was synthesized and used as the fiber coating material for the solid-phase microextraction of phthalate esters. The optimized method showed a linear response range and limits of detection that met the requirements, and the relative recoveries and relative standard deviations were satisfactory. The method was successfully applied for the determination of phthalate esters in bottled juice beverage samples.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Chemistry, Analytical
Yu-Xin Wang, Wang Zhang, Xiao-Fang Shen, Jin-Yu Qiao, Yue-Hong Pang
Summary: Phthalate esters (PAEs) and bisphenol A (BPA) are widely used in food plastic packaging and can migrate to food, posing a risk to human health. A magnetic covalent organic framework TFP-NDA/Fe3O4 was synthesized and used as an adsorbent for rapid solid-phase extraction of PAEs and BPA. The method showed good performance in beverage samples, with recoveries ranging from 81.7% to 114.2%.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Analytical
Nourolhoda Razavi, Mohammad Taghi Hamed Mosavian, Zarrin Es'haghi
Summary: In this study, a method combining magnetic micro solid-phase extraction and gas chromatography was developed to analyze the presence of phthalate esters in baby's saliva. The results showed that baby accessories made of soft PVC emit phthalate species and contaminate baby's saliva. Among the phthalate species studied, din-butyl phthalate (DBP) and di (2-ethylhexyl) (DEHP) were found to be released in higher amounts.
MICROCHEMICAL JOURNAL
(2022)
Article
Agriculture, Multidisciplinary
Wenfen Zhang, Yuan Yang, Jian Mao, Qidong Zhang, Wu Fan, Guobi Chai, Qingzhao Shi, Changlian Zhu, Shusheng Zhang, Jianping Xie
Summary: In this study, a novel nitrogen-rich covalent organic framework was developed as a solid-phase microextraction coating for ultrasensitive determination of phthalate esters in water samples. The method demonstrated low detection limits, satisfactory linearity, and fast enrichment performance, providing promising results.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yalan Hu, Yueru Shi, Yuefan Liu, Yixin Kuang, Suxin Zhou, Luyi Chen, Sai Ouyang, Ningbo Zhou, Juan Zheng, Gangfeng Ouyang
Summary: The wide applications and corresponding hazards of aromatic esters have led to the development of sensitive analytical methods. A covalent organic framework called DaTp has been synthesized as a solid phase microextraction coating, which can extract aromatic esters with different polarities from complex cosmetic samples. When coupled with gas chromatography-tandem mass spectrometry, this method can accurately determine the aromatic esters in cosmetics.
ANALYTICA CHIMICA ACTA
(2022)
Article
Biochemical Research Methods
Jinqiu Li, Zhuo Wang, Qianqian Wang, Liying Guo, Chun Wang, Zhi Wang, Shuaihua Zhang, Qiuhua Wu
Summary: Novel coatings for the extraction of phthalate esters (PAEs) were developed using three hypercrosslinked polymers (HCPs) constructed in this study. The optimized SPME method showed low detection limits and good repeatability for the determination of eight PAEs in water samples, with satisfactory recoveries achieved. This approach provides a promising alternative for monitoring trace levels of PAEs in water samples.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Analytical
Qidong Yu, Yaping Wu, Wenmin Zhang, Wende Ma, Juan Wang, Hui Chen, Qingqing Ding, Lan Zhang
Summary: A novel chemical preparation strategy was established for rapid fabrication of covalent organic framework (COF) coated fibers. Four different COF coated fibers were successfully prepared within 1 hour, demonstrating the fast and general applicability of the strategy. The TpTph coated fiber was then used to develop a new solid-phase microextraction (SPME) method for the detection of trace phthalic acid esters (PAEs) in environmental water. The method showed low limits of detection, good precision, and short extraction time, and successfully detected trace PAEs in real water samples. The proposed fiber preparation strategy is reliable and offers a potential avenue for the rapid and facile fabrication of COF coated fibers.
Article
Biochemical Research Methods
Min Sun, Juanjuan Feng, Xiangping Ji, Chunying Li, Sen Han, Mingxia Sun, Yang Feng, Jiaqing Feng, Haili Sun
Summary: By growing TiO2 nanorods array on the surface of carbon fibers and modifying it with PANI, the extraction performance towards PAEs was significantly improved. The established online in-tube SPME-HPLC method demonstrated low limits of detection, wide linear ranges, and good repeatability for the determination of PAEs in real water samples.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Analytical
Mir Ali Farajzadeh, Zahra Fathipour, Mehri Bakhshizadeh Aghdam, Mohammad Reza Afshar Mogaddam
Summary: The wide existence of phthalate esters in healthcare products has raised concerns among scientists due to their negative effects on human health. This study aimed to determine the presence of certain plasticizers in dental floss and developed an extraction and analysis method using gas chromatography-flame ionization detector and gas chromatography-mass spectrometry. The results showed the extraction method was effective in detecting the analytes with good precision and recovery rates.
MICROCHEMICAL JOURNAL
(2023)
Article
Environmental Sciences
Xue Li, Zhaojin An, Yicheng Shen, Yi Yuan, Fengkui Duan, Jingkun Jiang
Summary: A new technique was developed to measure volatile and semi-volatile PAEs in urban aerosols, revealing a strong correlation between PAEs and PM2.5 concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Correction
Biochemical Research Methods
Yong Wang, Suhua Yu, Rui Li, Jing Wan, Yuheng Wang, Zongli Huo, Chunyong Wu, Li Mi, Songqin Liu
JOURNAL OF CHROMATOGRAPHY A
(2024)
Review
Biochemical Research Methods
Israel D. Souza, Maria Eugenia C. Queiroz
Summary: Organic-silica hybrid monolithic materials have gained significant attention in separation science and sample preparation due to their unique properties. This review summarizes the characteristics, current status, and recent developments of these materials, as well as discusses synthesis methods, characterization techniques, and strategies for improving extraction efficiency in various applications.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Bhagwat Upreti, Bhanu Prasad Vempatapu, Jagdish Kumar, Pankaj K. Kanaujia
Summary: Lubricating oils are essential for the effective performance of internal combustion engines. This study presents a new HPLC method for determining additives in finished lubricating oils and polar substances in used engine oils.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zongqing Huang, Haoju Hua, Xiuzhen Du, Zipeng Zhen, Wei Zhao, Jun Feng, Ji-an Li
Summary: This study successfully isolated VHHs against the SUMO protein for the first time using biopanning of an immune camelid nanobody library. The VHHs were coupled to agarose resins to form affinity chromatography resins, allowing for one-step purification of various SUMO fusions.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Xueting Qiu, Xuben Hou, Yue Yang, Hao Fang, Fei Cui, Xinying Yang
Summary: In this study, a new method based on electrophoretically mediated microanalysis was developed for the investigation of PTPRO enzymatic activity. The method was successfully used to determine the kinetics of PTPRO and the inhibitory concentration of PTPRO inhibitors. The method exhibited improved accuracy and reduced consumption compared to traditional methods.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Feifei Luo, Mengmeng Hao, Lei Zhang, Yangguo Xie, Wei Hou, Hongya Wang, Zhongli Zhang
Summary: In this study, a comprehensive screening and structure elucidation of 23 nonvolatile organic compounds (NVOCs) in two antibody drugs was conducted. Seven previously unreported compounds were identified. A quantitative method with high sensitivity, accuracy, and precision was developed for evaluating the safety of NVOCs in drug products.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zuzana Vosahlova, Kveta Kalfkova, Martin Gilar, Jakub Szymarek, Maria Mazurkiewicz-Beldzinska, Sylwia Studzi
Summary: A hydrophilic interaction liquid chromatography method was developed for the separation and identification of oligonucleotide impurities and metabolites, and successfully applied to the analysis of serum samples from Spinraza-treated patients.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Aswanidevi Kongasseri, Thirumalai Madhesan, Sangeetha Krishna Kumar, Sushmitha Pedugu Sivaraman, Suchashrita Mitra, Pitchaiah Kancharlapalli Chinaraga, C. V. S. Brahmmananda Rao, Sivaraman Nagarajan, Prabhakaran Deivasigamani, Akhila Maheswari Mohan
Summary: This study focuses on the sequential separation of trivalent lanthanides using modified C-18 silica-packed supports and reversed-phase HPLC technique. By tuning the column modifiers and separation parameters, the researchers achieved systematic separation of Ln(3+). The results showed that the choice of column modifiers and fine-tuning of the modification procedure were crucial for achieving excellent separation.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Raquel Perez-Robles, Szabolcs Fekete, Robert Kormany, Natalia Navas, Davy Guillarme
Summary: There is a mismatch between the sample diluent and the mobile phase in HILIC analysis, leading to analyte breakthrough and peak distortion. Adding a weak solvent for pre-injection can effectively prevent these issues and improve sensitivity.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Oleg Pokrovskiy, Irina Rostovschikova, Konstantin Ustinovich, Ilya Voronov, Dmitry Kosyakov
Summary: A chromatography-like propagation of water through the material bed was observed during supercritical fluid extraction of aroma plants with high moisture content, which could be significant for modeling the kinetics of supercritical fluid extraction of non-volatile compounds.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Yasar Kemal Recepoglu, Ozguer Arar, Asli Yuksel
Summary: Biosorption using phosphorylated hazelnut shell waste (FHS) is a promising method for lithium removal and recovery. This study investigated the performance of a continuous-flow packed-bed column system using FHS for ultra-low level lithium removal. The results showed that the lihium biosorption capacity of the FHS column was unaffected by the bed height, but decreased with increasing flow rate.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Jian Sun, Zheheng Zheng, Zixiao Jia, Jiabin Wang, Xucong Lin
Summary: In this study, an ionic covalent organic framework (iCOF) surface grafting monolithic sorbent was prepared for in-tube solid-phase microextraction (SPME) of aristolochic acids (AAs) in various samples. The density of quaternary ammonium ions in the iCOF was modulated for enhanced adsorption of AAs. The iCOF surface grafting monolithic sorbent was confirmed by different means. Several operating conditions were optimized to develop the online in-tube SPME-HPLC method, which showed good linearity, low limits of detection, and high recoveries for AAs in serum samples. This study presents a feasible approach for the application of COF-based monolithic sorbents in sample preparation.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zeng Wen, Ruihan Peng, Die Gao, Jing Lin, Jia Zeng, Zhou Li, Famin Ke, Zhining Xia, Dandan Wang
Summary: A chitosan-alginate sponge with multiple cross-linking networks was developed for adsorption and enrichment of anionic dyes from food samples. The sponge showed better three-dimensional network structure, mechanical behavior, and stability compared to pure chitosan and alginate sponges. The adsorption performance and selectivity of the sponge were systematically studied, and it maintained high adsorption capacity and selectivity for anionic dyes. The sponge also showed satisfactory reusability and was successfully combined with high-performance liquid chromatography for the enrichment and detection of anionic dyes in candy and cocktail samples.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Hairong Zhang, Xiaojuan Jiang, Dandan Zhang, Yuexin Yang, Qiang Xie, Caisheng Wu
Summary: Analysis of in vivo exposure to traditional Chinese medicine using mass spectrometry is helpful for identifying effective ingredients and developing new drugs. This study focused on Forsythia suspensa (Lian Qiao) and used metabolomics technology to explore its in vivo exposure. By comparing the differences before and after administration, a complete set of nontargeted analysis strategies for TCM exposure was established. The study identified 393 Lian Qiao-related chemical components in mice after administration, including prototypes and metabolites. This study provides a reference for research on the active ingredients of Lian Qiao in vivo.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Oscar Castejon-Musulen, Ricardo Lopez, Ignacio Ontan, Vicente Ferreira
Summary: A quantitative analytical method was developed and validated in this study to determine the concentrations of 81 aroma-relevant wine volatiles. The method utilizes stir bar sorptive extraction and multidimensional gas chromatography with flame ionization detector or mass spectrometer. The method demonstrated good linearity, reproducibility, and recovery, and was successfully applied to analyze 20 wine samples.
JOURNAL OF CHROMATOGRAPHY A
(2024)