Lai Yong-zhong
2012
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Journal
Physical Testing and Chemical Analysis
Abstract
The content of 1,3,5-trichlorobenzene in drinking source water was determined by GC-MS with head-space solid phase micro-extraction(HS-SPME-GC/MS).Using 1,2-dichlorbenzene-d4 as internal standard,the 1,3,5-trichlorobenzene in water sample was extracted by SPME with the PDMS extractor for 20 min.The extractor was desorbed for 5 min at the inlet of the gas chromatograph,and separation of 1,3,5-trichlorobenzene was carried out on the DB-624 chromatographic column with programmed temperature elevation.Electron bombardment ionization(230 ℃,70 eV) and selected ion scanning mode were adopted in MS analysis.Linearity was obtained in the range of 0.100-2.50 μg·L-1,with detection limit(3S/N) of 0.019 μg·L-1.The proposed method was applied to the determination of 1,3,5-trichlorobenzene in river water and reservoir water,and values of recovery obtained by standard addition method were in the range of 91.5%-126.0%.