Article
Environmental Sciences
Na Zhu, Ruiying Li, Jie Zhang, Qian Yan, Junheng Jiao, Dong Liang, Huifeng Yue, Nan Sang, Guangke Li
Summary: This study investigated the photo-degradation behavior and ecological impacts of residual benzoylurea pesticides. Results showed that carbon nitride nanofilm can enhance the degradation efficiency of the pesticides, which follow a first-order dynamic mechanism. The degradation pathways of the pesticides were similar, with cleavage of urea-bridge, hydroxylation, and dehalogenation identified as key steps. Additionally, the presence of C3N4 nanofilm reduced aquatic toxicity of the pesticides under visible light irradiation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemical Research Methods
Mehri Bakhshizadeh Aghdam, Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam
Summary: A new solid phase extraction method using low-cost partially carbonized cellulose filter paper as a sorbent, combined with dispersive liquid-liquid microextraction, was developed for extracting pesticide residues from fruit juice samples prior to gas chromatography-flame ionization detection. The method showed good sensitivity and accuracy, with detection and quantification limits in the range of 0.30-0.61 and 1.0-2.0 μg/L, respectively.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Physical
Shuang Liu, Zhe Wang, Yuexiang Lu, Hongpeng Li, Xianjie Chen, Guoyu Wei, Tong Wu, Daniel-James Maguire, Gang Ye, Jing Chen
Summary: The SUPER method utilizing a bifunctional carbon nitride material, CN550, has shown a significant improvement in both uranium adsorption capacity and photocatalytic activity. Compared to the pure physicochemical adsorption (PA) method, the SUPER method achieved a tenfold higher uranium extraction capacity, reaching up to 1556 mg g(-1).
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Xia Wang, Yuanyuan Zhu, Li Zhou, Pengfei Zhao, Zhili Xiong, Jia Yu
Summary: A novel multi-residue method utilizing magnetic solid-phase extraction combined with LC-MS/MS was proposed for the simultaneous enantiomeric determination of eight chiral pesticides in water and fruit juices. The method showed good sensitivity and accuracy, meeting the requirements for routine analysis of chiral pesticide residues in aqueous samples.
Article
Chemistry, Applied
Mehri Bakhshizadeh Aghdam, Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam
Summary: In this study, carbonized cellulose nanoparticles were prepared and used as a sorbent for the extraction of pesticide residues from juice samples. The proposed method showed high extraction efficiency and ease of operation, and successfully detected the target pesticides in various fruit and vegetable juices.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
Xiaoyan Cui, Yujiao Wang, Yumei Yan, Zilin Meng, Runhua Lu, Haixiang Gao, Canping Pan, Xinlin Wei, Wenfeng Zhou
Summary: A 4-formylphenylboronic acid-modified cross-linked chitosan magnetic nanoparticle was successfully fabricated and utilized for the enrichment of benzoylurea pesticides. The synthesized material showed efficient extraction, requiring less adsorbent and shorter extraction time, along with good reusability. The method demonstrated satisfactory recoveries and acceptable detection limits when applied to tea samples from various categories, indicating its potential for quantitative pesticide detection in complex matrices.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Chemistry, Applied
Elnaz Marzi Khosrowshahi, Masoumeh Ghalkhani, Mohammad Reza Afshar Mogaddam, Mir Ali Farajzadeh, Esmail Sohouli, Mahboob Nemati
Summary: This study presents a new dispersive solid phase extraction method using MXene nanoparticles for the simultaneous extraction and determination of twelve pesticides from fresh fruit juices. The method employs high performance liquid chromatography-tandem mass spectrometry for analysis and can help monitor pesticide levels in juice samples, improving our understanding of food safety.
Article
Chemistry, Applied
Meng-Jun Li, Na Li, Guiju Xu, Ling-Xi Zhao, Xiangfeng Chen, Yanfang Zhao, Ru-Song Zhao
Summary: A novel magnetic solid-phase extraction method using Fe3O4@BNNSs composite was developed for the analysis of plant growth regulators (PGRs) in tomatoes with HPLC-MS/MS. The optimized method showed excellent detection performance and successfully extracted and determined PGRs in tomatoes.
Article
Biochemical Research Methods
Xiaoyan Cui, Yujiao Wang, Yao-Lin Shi, Runhua Lu, Haixiang Gao, Wenfeng Zhou, Xiaodong Huang
Summary: This research presents the construction of a phenylboronic acid-functionalized magnetic UiO-66 MOF nanoparticle for the extraction of benzoylurea insecticides. The designed MOF exhibited a porous structure and large surface area, providing an ideal platform for further functionalization. The integration with HPLC led to the development of a quantitative analytical method with a wide linear range, satisfactory recoveries, and acceptable limits of detection. The method was successfully applied to tea infusion samples, demonstrating higher recoveries in semi-fermented and light-fermented tea samples.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Multidisciplinary
Fujie Liu, Qihang Zhou, Yurui Li, Jingyu Pang
Summary: Cu-doped boron nitride nanosheets were reported as efficient adsorbents for solid-phase extraction and determination of rhodamine B dye in food matrix. The adsorbent was characterized using XRD, FTIR, XPS, SEM, and TEM, and its adsorption performance was studied in terms of kinetics, isotherms, and thermodynamics. Under optimized conditions, high recoveries were achieved in the food matrix, indicating the great potential of this novel system for detecting rhodamine B in various real samples.
Article
Chemistry, Applied
Min Li, Weihua Liu, Xufeng Meng, Shuofeng Li, Qianqian Wang, Yaxing Guo, Yuanyuan Wu, Lin Hao, Xiumin Yang, Zhi Wang, Chun Wang, Qiuhua Wu
Summary: A novel knitting aromatic polymer (KAP) and magnetic KAP (M-KAP) were successfully synthesized via Friedel-Crafts reaction, and a simple and sensitive method for simultaneous determination of six benzoylurea insecticides (BUs) in honey and apple juice samples was developed. The method showed good linearity, low detection limits, and satisfactory recoveries. This study is of great practical importance for the analysis of BUs.
Article
Chemistry, Physical
Xiaoyan Duan, Kaiqiang Wang, Lei Wang, Limin Cao, Jianxin Sui, Hong Lin
Summary: In this study, a novel metal-organic framework adsorbent (UIO-66-NH2@TA) was successfully synthesized by functionalizing UIO-66-NH2 with tannic acid (TA) through Michael addition reaction. The adsorbent exhibited a high adsorption capacity for lead ions and showed selectivity towards Pb (II) in the presence of coexisting metal ions. The adsorption isotherms and kinetics followed the Langmuir model and pseudo-second-order kinetic model, respectively. Furthermore, the UIO-66-NH2@TA demonstrated efficient extraction of Pb (II) from various aqueous samples. These findings suggest that UIO-66-NH2@TA holds great potential for the treatment of Pb (II) contamination.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Analytical
Aysa Abbasalizadeh, Saeed Mohammad Sorouraddin, Mir Ali Farajzadeh, Elnaz Marzi, Mohammad Reza Afshar Mogaddam
Summary: A vortex-assisted dispersive micro-solid-phase extraction method using a new and green sorbent was developed for extracting five pesticides in fruit juice samples. Riboflavin was employed as an efficient sorbent, with broad linear ranges in calibration curves and low limits of detection and quantification. The proposed method demonstrated high enrichment factors and precision for concurrent extraction of pesticides in various fruit juice samples.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Biochemical Research Methods
Jia Chen, Xiaofei Han, Gafang Fu, Weiyang Tang, Kyung Ho Row, Hongdeng Qiu
Summary: In this study, magnetic nitrogen-doped porous carbon was prepared through incomplete combustion coupled with solvothermal synthesis and used as a magnetic solid-phase extraction adsorbent for the extraction of benzoylureas insecticides. The results showed that the magnetic nitrogen-doped porous carbon exhibited excellent adsorption performance and enrichment effect, and could be used for the detection of trace benzoylureas in complex samples.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Environmental Sciences
Zahra Sotoudehnia Korrani, Elham Khalili, Hesam Kamyab, Wan Aini Wan Ibrahim, Haslenda Hashim
Summary: In this study, cyanopropyl-functionalized silica nanoparticles were prepared using a sol-gel approach and used as a sorbent for determining trace levels of OPPs in environmental water samples. The synthesis parameters and the performance of the sorbent were investigated, and figures of merit such as precision, linearity, LOQ, LOD, and recovery were evaluated. The designed SPE method was successfully applied to the determination of OPPs in real water samples and compared to commercial cartridges.
ENVIRONMENTAL RESEARCH
(2023)
