내분비계 장애물질 중의 하나인 농약 benomyl의 환경잔류실태를 조사하기 위해 수질중의 benomyl 농도를 정량 하였다. 일반적으로 benomyl은 가수분해하여 carbendazim으로 변하며 본 분석법은 carbendazim을 정량 하는 간접법이다. 수질중의 잔여 benomyl은 가수분??후 적절한 용매로 추출하여 농축, 정제되었다. 농축된 시료의 carbendazim 농도를 LC/MS (TOF)로 분석하였으며 그 결과 방해물질에 의해 발생할 수 있는 오차를 제거할 수 있었다. 검출한계는 LC/UVD법(EPA-631)에 비하여 약 1,600배 낮았으며 spike의 회수율도 약 80~118%로 양호하였다.
Benomyl, one of the known endocrine disrupting chemicals, was analyzed to understand the its fate in water. Benomyl analysis process in water sample include the following sequential steps. Hydrolysis of benomyl into carbendazim, solvent extraction, concentration, and the concentration of final carbendazim solution was determined by LC/MS (TOF). Recoveries of the spiked samples were good with the range of 80.6 to 118.6% and the MDL was 1,600 times lower than that of LC/UVD method. The use of LC/MS (TOF) successfully eliminated the positive error incurred by interferencing materials in the matrix.
