Determination of 115 Pesticide Residues in Textiles by Liquid Chromatography-Tandem Mass Spectrometry.

The presence of pesticide residues in textiles poses a risk to human health. We established a robust and high-throughput liquid chromatography-tandem mass spectrometry method for the determination of 115 pesticide residues in textiles. In this study, we evaluated high-performance liquid chromatography-tandem mass spectrometry conditions and sample extraction methods, including separation performance of different columns, mass conditions, extraction solvent, and extraction time. Finally, we established the method as follows: After ultrasonic extraction with methanol, we blew the sample with nitrogen to dry and then took it to a fixed volume by a specific solvent. We used a C18 reversed-phase chromatographic column and detected the samples in the multiple reaction monitoring mass mode. And we verify the limit of detection (LOD), limit of quantitation (LOQ), linearity, recovery, and precision. The LOD and LOQ of the method was 10 and 20 μg/kg separately; the recoveries ranged from 71.3% to 118.4%; and the relative standard deviation was 0.2%-19.9%. We verified the applicability of the developed protocol through the analysis of 21 real textile products.