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| | In this work,by using GDX-402 porous polymer beads as adsorbent and carbon disulfide as eluent,the conditions for enriching trace chlorobenzene compounds in water were investigated. Enriched eluate was directly injected into a column packed with 3. 0% dihexyl sulfonic acid ndium/101 white support to be separated,and then detected by name ionization detector under constant temperature. The method has been used successfully for the determination of trace of chlorobenzene compounds in w... | | 采用GDX-402多孔微球为吸附剂,二硫化碳为脱附剂,研究水中痕量氯本类化合物的富集条件。富集后的洗脱液直接注入3.0%十二烷基苯磷酸钠/101白色担体柱中,用FID检测,恒温下进行气相色谱分离。采用单点校正法进行定量。大大提高了方法的灵敏度,已成功地应用于自来水中痕量氯苯类化合物的测定。 | | 文摘来源 | | It is reported in this paper that the solid phase microextraction technique is used in the capillary GC determination of chlorobenzene compounds in water. The whole procedure takes only 20min, The limit of detections of the proposed method for different chlorobenzene compounds approaches 0. 1μg ·L~(-1) to 2μg ·L~(-1). | | 固相微萃取是一种快速、简便、集萃取浓缩进样于一体的样品前处理技术,具有分析时间短、灵敏度高、无需有机溶剂的优点。方法用固相微萃取富集水中氯苯类化合物,毛细管气相色谱分离分析,整个分析过程只需20min,检出限可达0.1~2μg·L~(-1),已用于地面水水源中氯苯类化合物含量的测定。 | | 文摘来源 | | Solid Phase Microextration(SPME), a fast ,simple ,practical and solventless sample extraction teniques,greatly reduces analysis time and improves minimum detection limits Trihalomethanes and chlorobenzene compounds in water were analyzed by using SPME Capillary GC—ECD The whole procedure is just 20 mininus, and the minimum detection limits reach 0 01~0 3μg/L. It has been applied to the determination of trihalomethanes and chlorobenzene compounds in drinking water and surface ... | | 固相微萃取是一种快速、简便、集萃取浓缩进样于一体的样品前处理技术 ,具有分析时间短、灵敏度高、无需有机溶剂的优点。本工作用固相微萃取富集水中挥发性卤代烃、氯苯类化合物 ,毛细管气相色谱分离分析 ,整个分析过程只需 2 0 min,检出限可达 0 .0 1~ 0 .3μg/L,已用于自来水、地面水源中挥发性卤代烃、氯苯类化合物含量的测定。 | | 文摘来源 | |   | | << 更多相关文摘 |
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