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目的建立同时测定生活饮用水中苯甲醚和8种苯系物(苯、甲苯、乙苯、对二甲苯、间二甲苯、邻二甲苯、异丙苯、苯乙烯)的吹扫捕集-气相色谱-质谱联用方法。方法采用吹扫捕集的方法对水中的苯甲醚和苯系物进行富集,解吸后进入气相色谱-质谱联用仪,经色谱柱分离后,质谱检测器检测测定。结果方法的线性范围分别为0.73~47.0μg/L(异丙苯)和0.78~50.0μg/L(其余8种化合物),检出限为0.16~0.23μg/L,回收率为84.0%~120%,RSD为0.6%~5.0%。结论该方法灵敏度高、重现性好、操作简单、无需有机溶剂,适用于饮用水中苯甲醚和8种苯系物的同时测定。
OBJECTIVE To establish a method for the simultaneous determination of anisole and 8 kinds of benzene compounds (benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene, cumene, styrene) Gas chromatography - mass spectrometry method. Methods The method of purge and trap was used to enrich the aniline and benzene series in water. After desorption, the sample was taken to gas chromatography - mass spectrometry. After separation by column chromatography, mass spectrometry detector was used for determination. Results The linear range of the method was 0.73 ~ 47.0μg / L (cumene) and 0.78 ~ 50.0μg / L (the remaining 8 compounds). The detection limit was 0.16 ~ 0.23μg / L and the recovery was 84.0% ~ 120 %, RSD is 0.6% ~ 5.0%. Conclusion The method has high sensitivity, good reproducibility, simple operation and no organic solvent. It is suitable for the simultaneous determination of anisole and eight benzene series in drinking water.