Capillary LC/Frit-FAB-MS was used for the determination of 24 thermolabile and polar pesticides including 9 neutral/basic and 15 acidic ones which are not amenable to routine GC/MS. The base ions of acidic pesticides in negative mode were a deprotonated molecular ion except for asulam, MCPB, 2,4-DB, and warfarin, and those for neutral/basic pesticides and asulam in positive mode were a protonated one. More than one diagnostic ion were obtained except for hymexazol and bentazone. High sensitivity was obtained for neutral/basic pesticides and asulam by adopting a mobile phase composed of CH3CN and 0.1% acetic acid, while for the other acidic pesticides, a mobile phase composed of CH3CN and 5 mM din-butylammonium acetate (pH=6.7) was effective. The detection limits of the pesticides were in the range of 10∼300 μg/l, except for benazolin whose limit was 1000 μg/l. Environmental samples (1 L) were taken from raw water for water supply and applied to analysis after concentration by using a solid phase extraction method. 0.2 μg/l dymron (in full-scan mode) and 0.05 μ/l 2,4-D (in selected ion monitoring mode) were detected in a sample, which indicated that the LC-frit-FAB-MS method could be used for determining thermolabile and polar pesticides in environmental water with relatively high sensitivity.
Skip Nav Destination
Article navigation
Research Article|
October 01 1998
Analysis of thermolabile and polar pesticides in environmental water with capillary chromatography-frit-fast atom bombardment mass spectrometry
Jian-ying Hu;
Jian-ying Hu
*Department of Water Supply Engineering, National Institute of Public Health, 4-6-1 Shiroganedai, Minato-ku, Tokyo 108, Japan
Search for other works by this author on:
Takako Aizawa;
Takako Aizawa
*Department of Water Supply Engineering, National Institute of Public Health, 4-6-1 Shiroganedai, Minato-ku, Tokyo 108, Japan
Search for other works by this author on:
Mari Asami;
Mari Asami
*Department of Water Supply Engineering, National Institute of Public Health, 4-6-1 Shiroganedai, Minato-ku, Tokyo 108, Japan
Search for other works by this author on:
Yasumoto Magara
Yasumoto Magara
**Department of Urban Environmental Engineering, Faculty of Engineering, Hokkaido University, N-12, W-8Kita-ku, Sapporo, Japan
Search for other works by this author on:
Water Sci Technol (1998) 38 (7): 169–177.
Citation
Jian-ying Hu, Takako Aizawa, Mari Asami, Yasumoto Magara; Analysis of thermolabile and polar pesticides in environmental water with capillary chromatography-frit-fast atom bombardment mass spectrometry. Water Sci Technol 1 October 1998; 38 (7): 169–177. doi: https://doi.org/10.2166/wst.1998.0290
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.