随着石油化工工业的发展,苯系物巳构成对江河水的污染。苯系物在水中存在浓度为 PPb 级,采用有机溶剂萃取法处理痕量苯系物污染水样,不仅要大量使用有机溶剂,而且在 K.D 浓缩过程中挥发损失,使回收率降低,色谱测定不易检出。本法采用吸附富集——气相色谱法测定了苯系物的回收率。选取国产高分子微球 With the development of the petrochemical industry, benzene compounds have constituted pollution of rivers and streams. Benzene series exist in the water at a concentration of PPb level, the use of organic solvent extraction trace benzene series contaminated water samples, not only to use large amounts of organic solvents, but also volatile loss in the KD concentration, so that the recovery rate is reduced, the chromatographic determination is not easy Check out. This method uses adsorption enrichment - gas chromatography to determine the recovery of benzene series. Select domestic polymer microspheres