Determination of Quinoline and Isoquinoline in Textiles by Gas Chromatography-Mass Spectrometry
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KeyWord:textiles  quinoline  isoquinoline  ethyl acetate  gas chromatography-mass spectrometry(GC-MS)
GAO Yong-gang,NIU Zeng-yuan,LUO Xin,YE Xi-wen,ZHANG Yan-yan,LIAN Su-mei 1.Technology Center of Qingdao Customs;2.Qingdao Testing Research Institute of Product Quality,Qingdao,China;3.Technology Center of Shijiazhuang Customs District
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      A method was developed for the determination of quinoline and isoquinoline in textiles by gas chromatography-mass spectrometry(GC-MS).The experimental conditions for extraction were optimized.The textile samples were ultrasonically extracted with ethyl acetate as organic solvent.After being concentrated by evaporation and set to a certain volume,the extracts were determined by GC-MS.Under the optimal conditions,the calibration curves for quinoline and isoquinoline were linear(r>0.999 0) in the concentration range of 0.05-10.0 mg/L.Recoveries were in the range of 82.0%-99.8% with their relative standard deviations(RSD,n=6) of 0.9%-3.8%.The limits of quantitation were 0.05 mg/kg.The method was sensitive,simple,efficient and accurate,and could meet the requirements for detection of quinoline and isoquinoline in textile products.