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Multiple detection of 15 triazine herbicides by gold nanoparticle based-paper sensor

Nano Research 2022年第6期15卷 5483-5491页

作者： Lingling Guo Xinxin Xu Jing Zhao Shudong Hu Liguang Xu Hua Kuang Chuanlai Xu State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and TechnologyJiangnan UniversityWuxi 214122China Department of Radiology Affiliated HospitalJiangnan UniversityWuxi 214122China

triazine herbicides have been widely used in agriculture,but their residues can harm the environment and human health.To help monitor these,we have developed an effective immunochromatographic strip test that can simultaneously detect 15 different triazines in grain samples(including ametryn,cyprazine,atraton,prometon,prometryn,atrazine,propazine,terbuthylazine,simetryn,trietazine,secbumeton,simazine,desmetryn,terbumeton and simetone).Based on our optimization procedure,the visual limit of detection(vLOD)for these triazines was found to be 2–10 ng/mL in assay buffer,and 0.02–0.1 mg/kg in grain samples.Four different grain matrices including corn,brown rice,wheat,and sorghum were studied and the test results showed no significant differences between the 15 triazines analyzed using this method.This test is simple,convenient,rapid,and low-cost,and could be an effective tool for primary screening of triazine residues in grain samples.

关键词： triazine herbicides immunochromatographic strip gold nanoparticles grain

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Determination of triazine herbicides in Environmental Water Samples by Acetonitrile Inorganic Salt Aqueous Two-Phase Microextraction System

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Journal of Analysis and Testing 2018年第4期2卷 322-331页

作者： Shiqian Gao Gege Wu Xiaomeng Li Jie Chen Youyi Wu Junxia Wang Zhanen Zhang School of Environmental Science and Engineering Suzhou University of Science and TechnologyNo.1 Kerui RoadSuzhou 215009People’s Republic of China Jiangsu Key Laboratory of Environmental Science and Engineering Suzhou University of Science and TechnologyNo.1 Kerui RoadSuzhou 215009People’s Republic of China National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology No.1 Kerui RoadSuzhou 215009People’s Republic of China

Acetonitrile inorganic salt aqueous two-phase extraction method was established for the determination of triazine herbicides(simeton,cyanazine,desmetryn,terbumeton,terbuthylazine and dimethametryn)in environmental water samples by high-performance liquid chromatography(HPLC).The extraction solvents types and volume of acetonitrile,the inorganic salt types and amount of(NH_(4))_(2)SO_(4),extraction time and pH of sample solution were optimized by single-factor experiment and central composite design.Under the optimum extraction conditions,all linear ranges were obtained with coefficients of determination(r)≥0.9993.The limits of detection for this proposed method were in the range of 0.16-0.28μg/L for six triazine herbicides.The developed method has been successfully applied to the analysis of target triazine herbicides from lake,canal and moat in real-world water samples.The recoveries of target analytes were in the range from 87.0 to 110.9%and the relative standard deviation was lower than 7.3%.

关键词： Acetonitrile inorganic salt Aqueous two-phase microextraction triazine herbicides Environmental water samples High-performance liquid chromatography

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Determination of triazine herbicide residues in water samples by on-line sweeping concentration in micellar electrokinetic chromatography

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Chinese Chemical Letters 2008年第12期19卷 1487-1490页

作者： Shuai Hua Zhang Yuan Yuan Yang Dan Dan Han Chun Wang Xin Zhou Xiao Huan Zang Zhi Wang Key Laboratory of Bioinorganic Chemistry College of Sciences Agricultural University of Hebei Baoding 071001 China

A new method for the determination of atrazine, simazine and prometryn in water samples by on-line sweeping concentration technique in micellar electrokinetic chromatography （MEKC） was developed. Various parameters affecting sample enrichment and separation efficiency were systematically studied. Compared with the conventional MEKC method, up to 60-200-fold improvement in concentration sensitivity was achieved in terms of peak height by using this sweeping injection technique. The compound strychnine was used as the internal standard for the improvement of the experimental reproducibility. The limits of detection （S/ N = 3：1） for atrazine, simazine and prometryn were 9, 10 and 0.5 ng mL-1, respectively. This method has been successfully applied to the analysis of atrazine, simazine and prometryn in lake, steam and ground water.

关键词： triazine herbicides On-line concentration MEKC Sweeping Water samples

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