کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11027426 | 1666296 | 2019 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An enhanced sensitivity and cleanup strategy for the nontargeted screening and targeted determination of pesticides in tea using modified dispersive solid-phase extraction and cold-induced acetonitrile aqueous two-phase systems coupled with liquid chromat
ترجمه فارسی عنوان
یک حساسیت افزایش یافته و استراتژی پاکسازی غربالگری غیر هدفمند و تعیین هدف قرار دادن آفت کش ها در چای با استفاده از استخراج فاز مایع اصلاح شده فیزیکی و سیستم های دو فازی آبی با استن تریلر همراه با کرومات مایع
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کلمات کلیدی
Carbendazim (PubChem CID: 25429)Imidacloprid (PubChem CID: 86418)Acetamiprid (PubChem CID: 213021)pesticides - آفتکشهاMatrix effect - اثر ماتریکس یا اثر زمینهDispersive solid-phase extraction - استخراج جامدات فشرده شدهAqueous two-phase systems - سیستم های دو مرحله ای آبیHigh resolution mass spectrometry - طیف سنجی جرمی با وضوح بالاTEA - چایCaffeine (PubChem CID: 2519) - کافئین (PubChem CID: 2519)
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
At present, matrix interferences in tea are still a great challenge for analysis of multi-pesticide residues. Herein, a simple sample preparation method was developed based on the modified dispersive solid-phase extraction (DSPE) procedure and cold-induced acetonitrile aqueous two-phase systems (ATPS). In modified DSPE procedure, polyvinylpolypyrrolidone (PVPP) was selected as the matrix dispersive adsorbent to remove polyphenols from the tea with the removal rate of >98.3%. Using cold-induced acetonitrile ATPS, caffeine of the tea extract was sharply reduced by 81.2%, and a 0.798-3.167 of enrichment factor for the representative pesticides was achieved. In liquid chromatography-high resolution mass spectrometry analysis, a full scan/data independent acquisition approach was used for the nontargeted screening and targeted determination of pesticides. In data analysis, an in-house database of pesticides was constructed, and a simple accurate mass calibration method was used to correct the accurate mass variation, which was conducive to reduce the number of false detects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 275, 1 March 2019, Pages 530-538
Journal: Food Chemistry - Volume 275, 1 March 2019, Pages 530-538
نویسندگان
Feiquan Wang, Shaohua Li, Hua Feng, Yajun Yang, Bin Xiao, Dawei Chen,