کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7608811 | 1493389 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of four sulfonylurea herbicides in cereals using modified Quick, Easy, Cheap, Effective, Rugged, and Safe sample preparation method coupled with liquid chromatography-tandem mass spectrometry
ترجمه فارسی عنوان
تجزیه و تحلیل چهار علف کش های سولفونیل اوره در غلات با استفاده از روش آماده سازی سریع، آسان، ارزان، موثر، ناهموار و ایمن اصلاح شده با طیف سنجی جرم کروماتوگرافی مایع
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A modified Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) sample preparation method, coupled with liquid chromatography-electrospray ionization tandem mass spectrometry, has been developed for the simultaneous analysis of four commonly used sulfonylurea herbicides, ethoxysulfuron, halosulfuron-methyl, mesosulfuron-methyl and orthosulfamuron, in rice, maize, wheat and soybean. Adsorption of the analytes onto the primary-secondary amine used in the clean-up step was avoided by using 1% formic acid in acetonitrile as the extraction solvent to maintain the acidic herbicides in a non-ionized state. Trueness studies were carried out at three levels (2.5, 25 and 250â¯Î¼g/kg for ethoxysulfuron and 5, 50 and 500â¯Î¼g/kg for the other three analytes). Promising trueness (70.2%-119.8%) was achieved for all herbicides in all matrices after clean-up, with relative standard deviations (RSDr)â¯<â¯18.6%. Satisfactory matrix effects (â19.7% to 14.8%) were also obtained. Good linearity of the calibration curves was achieved, with determination coefficients (r)â¯â¥â¯0.9956, when the concentration of ethoxysulfuron was in the range 0.5-50â¯Î¼g/L and that of the other three analytes was in the range 1.0-500â¯Î¼g/L. The RSDwR for within-laboratory reproducibility was 5.7%. The validated method was successfully used to analyze real samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1537, 16 February 2018, Pages 27-34
Journal: Journal of Chromatography A - Volume 1537, 16 February 2018, Pages 27-34
نویسندگان
Yanxia Ni, Huan Yang, Hantong Zhang, Qiao He, Siqi Huang, Meiling Qin, Shuangshuang Chai, Huanhuan Gao, Youning Ma,