MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Jing Gu,Lu Zhang,Yangrui Si,Shuang Li,Jianzu Shen,Ruohan Xu,Tingxuan Yan,Mingfu Ye,Daojin Li,Qiang Wang,Changfang Zhang,Shuangshou Wang
Herein, an on-screen direct-reading solution was initiated for real-time monitoring of adsorption, degradation and recycle of dyes in water by integrating colorimetry with WeChat applet, in which MCM-41 composites were served as an all-rounder. Thanks to electrostatic interaction and mesoporous structures, MCM-41 showed superb binding performance toward dyes with the maximum extraction capacity up to 1.18 mg/mg (basic blue 26) and fast binding equilibrium within 1 min. Colorimetric cards with colors mapping to the dosage gradients of dyes were prepared by dyes-extracted MCM-41 or dye solutions, then RGB values of colorimetric cards were picked and embedded into a lab-made WeChat applet to build underlying digital colorimetric matrixes. Direct-reading analysis could be realized by automatic alignment of color information with inbuilt database of the applet in both online and offline ways with high sensitivity, in which the signal could still be readout even the dosage variations of dyes as small as 0.1 μg/mL. As proof-of-concept assays, this solution was finally applied to real-timely monitor the adsorption, degradation and recycle of dyes in water environment including industrial wastewater, aquaculture pond water and river water. Fine consistence between direct-reading results and those of colorimetry as well as instrumental technique like spectrometry assured high reliability of this strategy.
研究领域:
环境监测
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水处理
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分析化学
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纳米材料
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传感器
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信息技术
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污染控制
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2023
·Vol. 29
·期 8
·3373-3384
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IF 2.8
Wan Xiuying,Zhao Mengyuan,Li Fang,Zhu Gan,Zhao Hongyuan
Herein, we reported a novel niclosamide (NA) electrochemical sensor based on the multifunctional nanocomposite of palygorskite (Pal) nanofibers and bifunctional multiwalled carbon nanotubes (BMCN) with graphitization and carboxylation. For the BMCN@Pal nanocomposite, BMCN with one-dimensional nanotube structure possessed excellent electrical conductivity and good dispersion performance due to the graphitization and carboxylation; Pal with fibrous structure possessed good electrocatalytic activity due to the high absorption capability, large specific surface area, and prominent stability. Moreover, BMCN with interconnected carbon conductive network promoted the uniform distribution of Pal nanofibers and compensated for the poor electrical conductivity of Pal nanofibers. Thanks to the functional combination of BMCN and Pal, the BMCN@Pal/GCE sensor exhibited good NA electrochemical detection performance with low limit of detection of 7.88 nM in linear NA concentration of 0.01–10 μM. The BMCN@Pal/GCE sensor exhibited good repeatability and reproducibility. In addition, a good practical feasibility can be achieved at the BMCN@Pal/GCE sensor for the detection of NA in tap water and pond water samples (recovery rate: 96.2–100.3%, relative standard deviation: 2.53–4.97).
研究领域:
材料科学
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电化学
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2020
·
IF 5.339
Minghuo Wu,Enming Miao,Wenxue Xu,Weiping Xu,Yufeng Hu,Jingjing Zhan,Hao Zhou
Estrogens distribute widely in the environment as endocrine-disrupting chemicals (EDCs), which have to be monitored to evaluate their environmental impact. Aim to improve the analytical throughput of liquid chromatography-high resolution mass spectrometry (LC-HRMS), a quadruplex stable isotope dansylation method was developed, with which three real samples could be quantitatively analyzed in one injection. As the estrogens were at trace level in complex matrices, magnetic solid-phase extraction (MSPE) was applied to enrich these analytes and remove the interfaces. By integrating MSPE and quadruplex stable isotope dansylation, a solid-phase quadruplex labeling method was developed for the LC-HRMS analysis of estrogen analogues . For the tested seven estrogens, the developed method showed low detection limits (0.1–0.5 ng/L for pond water and 0.01–0.05 μg/kg for poultry manure), good precision (RSD < 5.5%) and accuracy (96.8–108.3%). The method was applied in the determination of estrogens in environmental samples, and the results revealed that all the tested estrogens were present in the estuary water (unquantifiable to 71.2 ng/L) and chicken manure (undetectable to 25.43 μg/kg).
研究领域:
环境科学
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分析化学
·
环境监测
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2024
·
IF 2.7
Zhihui Guo,Mingya Deng,Wenwen Fang,Kang Zheng,Min Liao,Yulong Wang,Qingkui Fang
Prothioconazole and its metabolite are considered a potential threat to human health and environmental safety. Thus, the development of a sensitive and rapid detection method for prothioconazole is crucial to ensure the safety of agricultural products. In this study, a new hapten of prothioconazole was designed and synthesized, and a selective polyclonal antibody with high affinity against prothioconazole was produced, which was obtained from immunized New Zealand white rabbits. Based on the polyclonal antibody, an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and indirect competitive chemiluminescence enzyme immunoassay (ic-CLEIA) were developed for detecting prothioconazole pesticides. Under optimized experimental conditions, the limit of quantification (LOQ) values for ic-CLEIA and ic-ELISA were 1.8 and 10.7 ng mL−1, respectively. The results demonstrated that the sensitivity (LOQ) achieved by ic-CLEIA was more than five times higher compared to that obtained with ic-ELISA. In addition, the recoveries obtained by adding standard prothioconazole to wheat grain, soybean, and pond water samples were in the range of 81.9 to 104.7% for ic-ELISA and 89.0 to 118.0% for ic-CLEIA.
研究领域:
农业化学
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环境科学
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分析化学
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毒理学
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产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2022
·
IF 5.545
Zou Yanqi,Zhou Xiaoyu,Xie Liuhong,Tang Hongliang,Yan Fei
Carbendazim (CBZ), a kind of widely used pesticide, is harmful to human health and environmental ecology. Therefore, it is of great importance to detect CBZ in real samples. Herein we report the stable growth of vertically-ordered mesoporous silica films (VMSF) on the glassy carbon electrode (GCE) using boron nitride-reduced graphene oxide (BN-rGO) nanocomposite as an adhesive and electroactive layer. Oxygen-containing groups of rGO and 2D planar structure of BN-rGO hybrid favor the stable growth of VMSF via the electrochemically assisted self-assembly (EASA) method. Combining the good electrocatalytic activity of BN-rGO and the enrichment effect of VMSF, the proposed VMSF/BN-rGO/GCE can detect CBZ with high sensitivity (3.70 μA/μM), a wide linear range (5 nM–7 μM) and a low limit of detection (2 nM). Furthermore, due to the inherent anti-fouling and anti-interference capacity of VMSF, direct and rapid electrochemical analyses of CBZ in pond water and grape juice samples are also achieved without the use of complicated sample treatment processes.
研究领域:
分析化学
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环境科学
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材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）