论文部分内容阅读
本文采用与Junk等人所用的装置类似的装置试验了XAD-2、4、7、8树脂对水中氯代苯类、氯代酚类、六六六、DDT,除草剂和PCB等有机氯污染物进行了浓缩实验。结果表明,它们能有效地从水中将这些物质吸附。其中尤以XAD-4效果最好,回收率达97％,试验结果还表明,不同的淋洗剂及其用量,不同的淋洗方式,对回收影响较大,丙酮是最好的淋洗剂,流速对结果影响不大,另外,这些树脂的吸附效率虽然很高,但是由于淋洗不完全,往往造成回收率低的结果。
In this paper, a device similar to that used by Junk et al. Was used to test the effect of XAD-2, 4, 7, 8 resins on the chlorination of chlorinated benzenes, chlorinated phenols, BHC, DDT, herbicides and PCBs Things were concentrated experiments. The results show that they effectively adsorb these substances from the water. Among them, XAD-4 has the best effect and the recovery rate reaches 97%. The test results also show that different eluent and its dosage and different elution modes have a great influence on the recovery, and acetone is the best eluent , The flow rate has little effect on the result. In addition, although the adsorption efficiency of these resins is high, the incomplete recovery often results in the low recovery rate.