MIAO Jian-jun1, WANG Yan-Guang2
(1. Environmental Monitoring Center of Nantong, Nantong 226006, China; 2. Jinling High School, Nanjing 210008, China)
Abstract: A gas chromatography-negative ion chemical ionization mass spectrometry (GC/MS-NCI) was developed for the rapid determination of endosulfans and its metabolite in soil samples. The soil sample was pretreated with n-hexane and then analyzed by (GC/MS-NCI). External standard calibration was used; the selective ions of endosulfan and endosulfan sulfate were m/z 406, 408，404, 372 and m/z 386, 384, 352 respectively. The detection limitwas 0.02-0.03 μg/Kg. The recoveries were in the range of 83.6%～86.4% with the relative standard deviations less than 5%. The method proposed is efficient, accurate and sensitive, which could meet the requirements for determining endosulfans in soil.
Key words: α-endosulfan; β-endosulfan; endosulfan sulfate; gas chromatography-negative ion chemical ionization mass spectrometry (GC/MS-NCI); soil
E-mail: miaojianjun1998@126.com
Analysis and Testing Technology and Instruments, Vol. 18, No. 2, 2012,111-113
