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- W2150139789 abstract "A novel dihydroxy-terminated benzo-15-crown-5 is synthesized and applied to prepare the solid-phase microextraction (SPME) fiber coating with sol-gel technology. Headspace SPME, as a simple, solvent-free method, is applied to the analysis of 16 organochlorine pesticides (OCPs) present at trace levels in a water sample. A homemade crown ether fiber coated with 80- micro m thickness was used for extraction. Analyses are performed using gas chromatography-electroncapture detection. The optimization of the extraction process is studied. Compared with commercially available SPME fibers, polydimethylsiloxane, the new phases show better selectivity and sensitivity toward OCPs. The linear concentrations range from 1 to 1000 ng/L, the detection limits are in the range of 0.01-0.5 ng/L, the recoveries are over 85%, and relative standard deviations are below 7.2% for these OCPs." @default.
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- W2150139789 date "2004-02-01" @default.
- W2150139789 modified "2023-10-16" @default.
- W2150139789 title "Solid-Phase Microextraction and Gas Chromatography-Electron Capture Detection Analysis of Trace Organochlorine Pesticides in Water Using Novel Benzo-15-Crown-5 Sol-Gel Coating" @default.
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- W2150139789 doi "https://doi.org/10.1093/chromsci/42.2.57" @default.
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