作者: Fanghong Tong , Yang Zhang , Fang Chen , Ying Li , Guanhua Ma
DOI: 10.1016/J.JCHROMB.2013.10.038
关键词:
摘要: A hollow-fiber liquid-phase microextraction (HF-LPME) method has been developed for the preconcentration of trace sulfonamides in water samples. Six commonly used including sulfamethazine (SMZ), sulfamerazine (SMR), sulfadiazine (SDZ), sulfadimethoxine (SDM), sulfamethoxazole (SMX), and sulfathiazole (STZ) were determined by CE with electrochemical detection (CE-ED) after microextraction. Several factors that affect extraction efficiency, separation, investigated. Under optimum conditions, above sulfonamide compounds could achieve baseline separation within 35min, exhibiting a linear calibration over three orders magnitude (r(2)≥0.998); obtained enrichment between 121 (for SDZ) 996 SDM), LODs range 0.033-0.44ng/mL. The proposed HF-LPME/CE-ED applied sensitive analyses real-world samples recoveries 75.1-109%.