کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7585337 | 1492036 | 2018 | 62 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multiresidue determination of pesticides in tea by liquid chromatography-high-resolution mass spectrometry: Comparison between Orbitrap and time-of-flight mass analyzers
ترجمه فارسی عنوان
تعیین چند منظوره آفت کش ها در چای توسط کروماتوگرافی مایع و اسپکترومتری جرمی با وضوح بالا: مقایسه روشهای سنجش حجمی هوای هوایی و هوایی
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کلمات کلیدی
آفت کش ها، تحلیل چندرسانه ای، چای، کروماتوگرافی مایع - طیف سنج جرمی اوربیتور، کروماتوگرافی مایع - طیف سنجی حجم زمان پرواز،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Liquid chromatography (LC)-Orbitrap mass spectrometry (MS) and LC-time-of-flight (TOF) MS operating in full scan mode at a mass resolution of 140,000 (m/z 200) and 30,000 (m/z 556), respectively, were compared for quantification of pesticide residues in tea. Both methods were validated for 146 pesticides at spike levels of 0.1 and 0.01â¯mg/kg and compared in terms of recovery, intra- and inter-day precisions, selectivity, linearity, and matrix effect. The results of both analyses were comparable, and recovery and intra- and inter-day precisions were within the acceptable ranges for most pesticides. LC-Orbitrap MS was slightly superior to LC-TOF MS in terms of sensitivity and selectivity due to its higher resolution. However, even using high-resolution LC-Orbitrap MS with a narrow mass window of ±3â¯ppm, interference by coeluting matrix components was observed, indicating that full scan data are insufficient for unequivocal identification, and additional information such as fragment ions is necessary.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 256, 1 August 2018, Pages 140-148
Journal: Food Chemistry - Volume 256, 1 August 2018, Pages 140-148
نویسندگان
Shizuka Saito-Shida, Tomoko Hamasaka, Satoru Nemoto, Hiroshi Akiyama,