采用液液萃取法富集水体中的有机污染物,以气相色谱-质谱和Compound composer软件进行筛查和半定量计算,同时以气相色谱-质谱法在选择离子模式下对Compound composer软件的半定量结果进行验证,结果表明除3-氨基苯酚、豆甾醇和β-谷甾醇外,其它物质的回收率在74％～102％之间,保留时间偏差为-0.158 ～0.049 min,对添加量为1.0μg目标物的水样半定量,结果偏差在-0.48～0.62 μg之间.在无标准样品的条件下,利用Compound composer软件及其自带含近千种化合物标准曲线的数据库,对江苏省南通、苏州和无锡三市的地表水环境样品进行监测,筛查其中主要的有机污染物,并进行半定量计算.三市地表水样中共检出47种有机污染物.2,6-二叔丁基-4-甲基苯酚为检出浓度最高的化合物,其浓度达140 μg·L-1,酞酸酯类和多环芳烃类物质普遍存在,其单体浓度范围分别为1.7～48μg·L-1和0.13 ～9.6 μg· L-1.依照GB3838-2002《地表水环境质量标准》,三市地表水体中酞酸酯类严重超标,水体中总有机物污染状况应引起关注.%Organic pollutants in water samples were extracted by liquid —liquid extraction and semi-quantitated by gas chromatography coupled with mass spectrometry (GC - MS) using compound composer software. The results were simultaneously confirmed by GC - MS under selected ion monitoring mode. The mean recoveries ranged from 74% to 102% , except for m-aminophenol, stigmasterol and beta-sitosterol. The retention time deviations ranged from -0. 158 to 0. 049 min. The deviations of the semi-quantitative results for 1. 0μg spiked water samples ranged from -0. 48 to 0. 62 (xg. Surface water samples collected from rivers and lakes of Nantong, Suzhou and Wuxi City, Jiangsu Province , were screened and determined for organic pollutants using compound composer software without any standard solutions. The results indicated that total of 47 organic pollutants were detected in the water samples, among which 4-methyl-2, 6-di-t-butylphenol was of the highest concentration(140 μg· L-1). Phthalate esters (PAEs) and polycyclic aromatic hydrocarbons ( PAHs) were commonly found substances. The isomer concentrations of PAEs and PAHs in the surface water samples were in the range of 1. 7 -48 μg · L-1 and 0. 13 -9. 6 μg·L , respectively. According to the Chinese national environmental quality standards for surface water ( GB 3838 -2002) , the concentrations of PAEs observed in this study were far beyond the restricted values. More attention should be paid on the current status of the total organic pollutants in the investigated waters.
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