Abstract:

Ultrasonic method was used to extract PFCs from textiles, and the pretreatment process is convenient. The ten kinds of target compounds, i. e. PFHxA，PFOA，PFNA，PFDA，PFuDA，PFDoA，PFBS，PFHxS，PFOS，and PFDS were separated on C18 reversed phase column in 13 min with step methanol-5 mmol/L ammonium acetate as the mobile phase. Monitor and qualitative analysis of PFHxA，PFOA，PFNA，PFDA，PFuDA，PFDoA，PFBS，PFHxS，PFOS，PFDS were undertaken at 313.1/268.9, 412.9/368.9, 462.9/418.9, 512.7/468.9, 562.7/518.9, 612.8/568.9, 298.8/99, 399.2/99, 498.8/99, 599/99 respectively. Isotope-labeled internal standard method was used to carry out such tests as the limit of detection, linear range, and recovery range. The results showed they were 0.5 µg/m2, 0.5 ～ 10 µg/m2, and 84.6% ～ 111.8%, respectively. It should be pointed out that the limit of detection is 0.5 µg/m2 by this method which is lower than 1 µg/m2 regulated for textiles by EU. This method was accurate and swift, which has been successfully applied to analyzing 20 real textile samples.