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Issue 19, 2018
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Supercritical CO2 extraction for the determination of tetrachloroethylene residues in dry-cleaned apparel

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Abstract

Tetrachloroethylene (PERC) is still one of the most widely used dry cleaning agents in the world. It is, however, a toxic substance to the human body which could damage the central nervous system and increase the risk of cancer. Thus, it is necessary to monitor PERC residues in dry-cleaned apparel fabrics. This paper has established a type of analytical method, which was based on supercritical carbon dioxide (SC-CO2) extraction technology with gas chromatography-mass spectrometry (GC-MS), to detect the residual amount of PERC. A flow rate of 0.9 mL min−1 dichloromethane was used as the optimum extraction entrainer. The optimal extraction conditions were obtained by the response surface methodology as follows: an extraction pressure of 368.21 bar, a temperature of 36.62 °C, an extraction time of 31.64 min, and a CO2 flow rate of 31.48 g min−1. PERC was analyzed using a GC-MS instrument and the retention time of PERC was 4.877 min, and the limit of detection was determined to be 0.04 mg kg−1. The PERC recovery rates of cotton, silk, polyester, and mink ranged from 94.2 to 103.6%, with an RSD between 1.67 and 3.78%. The establishment of the method could also provide a reference for the detection of other harmful substances in textiles.

Graphical abstract: Supercritical CO2 extraction for the determination of tetrachloroethylene residues in dry-cleaned apparel

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Publication details

The article was received on 05 Mar 2018, accepted on 30 Mar 2018 and first published on 09 Apr 2018


Article type: Paper
DOI: 10.1039/C8AY00474A
Citation: Anal. Methods, 2018,10, 2242-2250
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    Supercritical CO2 extraction for the determination of tetrachloroethylene residues in dry-cleaned apparel

    Y. Liu, K. Fu, Q. Bao, M. Ma and W. Zhou, Anal. Methods, 2018, 10, 2242
    DOI: 10.1039/C8AY00474A

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