multiresidue determination
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Separations ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 106
Author(s):  
Svetlana Hrouzková ◽  
Agneša Szarka

Due to the use of pesticides during cotton production and/or textile storage, it is necessary to assure textile and clothing safety in order to improve the protection of human health. In this work, an efficient method was established for a multiresidue determination of 33 pesticides covering several pesticide classes such as organochlorine, organophosphate, pyrethroides, triazines, etc., in textiles by modified QuEChERS and followed by gas chromatography–mass spectrometry. Optimal conditions were selected, including the amount of the sample, type of the extraction solvent and cleaning up sorbents, until the method was finally validated. Sufficient accuracy and precision were presented by the method using spiked samples between 10 and 250 μg/kg, while recoveries from 70 to 120% and an RSD < 20% for all the pesticides were obtained; the limits of quantification were below 5 μg/kg for all studied pesticides. The presented method showed high separation efficiency with minimal sample and sorbent consumption. The validated method was successfully applied to the analysis of real samples and proved to be applicable to routine analyses.


2021 ◽  
Author(s):  
jiafeng yu ◽  
Decheng Suo ◽  
Xiaoyong Lei ◽  
Yang Li ◽  
Guangyu Lin ◽  
...  

A method for automated and sensitive analysis of 19 anabolic steroids (AS) in animal oil using enhanced matrix removal lipid (EMR-Lipid) cleanup and ultra-performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) was...


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