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7988488 
Journal Article 
Simultaneous determination of plasticizers in waste cotton by ultrasonic assisted solid phase extraction gas chromatography tandem mass spectrometry 
Tie, J; Liu, J; Jia, L; Zang, M; Sun, H; Zhu, P 
2021 
China Textile Engineering Society 
42 
5 
130-137 
Chinese 
In order to develop an efficient quantitative analysis method for plasticizers in waste cotton, an ultrasound-assisted solid phase extraction gas chromatography tandem mass spectrometry (UE-SPE-GC/MS) method was established to simultaneously analyze 18 types of phthalates in waste cotton, using qualitative and quantitative analysis of formate and 5 adipate plasticizers. Using n-hexane-dichloromethane (volume ratio 4:1) as the extractant, the extract was purified with an Alumina-N solid phase extraction column, using selective ion scanning mode and external standard method for quantification. The results showed that 20 plasticizers demonstrate a good linear relationship in the concentration range of 1-20 μg/mL, DIHP, DINP and DIDP in the concentration range of 5-100 μg/mL), with the correlation coefficient being 0.990 7-0.999 6.The detection limit it is 0.084-1.748 μg/g, and the limit of quantification is 0.336-6.992 μg/g. At the spiked levels of 5, 10 and 20 μg/mL, the recoveries of the 23 plasticizers were between 83.3%-104.3%, and the intraday and interday relative standard deviations were 1.9%-8.1% and 1.6%-8.7%, respectively, meeting the requirements of testing. The UE-SPE-GC/MS method is simple to operate and has little interference. It can accurately detect trace residues of phthalate and adipate plasticizers in waste cotton. © 2021, Periodical Agency of Journal of Textile Research. All right reserved. 
Adipates; Gas chromatography tandem mass spectrometry; Phthalates; Plasticizer; Ultrasonic assisted solid phase extraction; Waste cotton; Alumina; Aluminum oxide; Chromatographic analysis; Dichloromethane; Gas chromatography; Mass spectrometry; Phase separation; Plasticizers; Reinforced plastics; Solvents; Ultrasonic applications; Correlation coefficient; Gas chromatography-tandem mass spectrometry; Limit of quantifications; Qualitative and quantitative analysis; Relative standard deviations; Simultaneous determinations; Solid-phase extraction; Solid-phase extraction columns; Extraction