色谱法
农药残留
杀虫剂
检出限
化学
分析物
探索者
计算机科学
样品制备
食品接触材料
校准
生物系统
萃取(化学)
准确度和精密度
重复性
环境科学
作者
Amira M. Hegazy,Rehab M. Abdelfatah,Hamada M. Mahmoud,Mohamed A. Elsayed
出处
期刊:Food Chemistry
[Elsevier]
日期:2020-02-15
卷期号:306: 125640-125640
被引量:6
标识
DOI:10.1016/j.foodchem.2019.125640
摘要
Abstract Combination of pesticides; acetamiprid, flutolanil and etofenprox are usually used for tomato fruits for protecting them against pest infection. Generally, pesticides, residues could be one of the health hazard sources. Two specific simple sensitive chromatographic methods are developed for simultaneous estimation of the concerning pesticides’ residues using simple economic steps of field sample preparation. The first method is HP- TLC method. Hexane: methanol: acetone: glacial acetic acid (8:2:0.5:0.1, by volume) is proposed as a developing system. The second one is RP- HPLC. Acetonitrile: water (75:25, v/v) is proposed as a mobile phase. The recommended methods are completely validated regarding ICH guidelines. Their means percentages and standard deviations of accuracy range 100.32 ± 0.89 to 99.27 ± 0.9. The methods’ repeatability and intermediate precision relative standard deviation percentages range 0.395–0.894. They are successfully applied for estimating the pesticides in pure and commercial forms and field samples.
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