Determination of aromatic amines from textiles using dispersive liquid-liquid microextraction.
A dispersive liquid-liquid microextraction procedure coupled with GC-MS is described for preconcentration and determination of banned aromatic amines from textile samples. Experimental conditions affecting the microextraction procedure were optimized. A mixture of 30 μL chlorobenzene (extraction solvent) and 800 μL ACN (disperser solvent), 5 min extraction time, and 5 mL aqueous sample volume were chosen for the best extraction efficiency by the proposed procedure. Satisfactory linearity (with correlation coefficients >0.9962) and repeatability (<9.78%) were obtained for all 20 aromatic amines; detection limits attained were much lower than the standardized liquid-liquid method. The proposed method has advantages of being quicker and easier to operate, and lower consumption of organic solvent.
Department of Chemistry, Zhejiang University, Hangzhou, China.
Lu
L
Yang
Wang
W
Yiwei
Lou
L
Caiying
Zhu
Z
Yan
D000588:Amines / Q000032:analysis / Q000302:isolation & purification*; D001391:Azo Compounds / Q000032:analysis / Q000302:isolation & purification*; D004396:Coloring Agents / Q000032:analysis / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D059627:Liquid Phase Microextraction / Q000379:methods*; D013784:Textiles / Q000032:analysis*
D000588:Amines; D001391:Azo Compounds; D004396:Coloring Agents