REEVALUATION OF SOLID-PHASE ADSORPTION AND DESORPTION TECHNIQUES FOR ISOLATION OF TRACE ORGANIC POLLUTANTS FROM CHLORINATED WATER

被引:10
作者
ONODERA, S
NAGATSUKA, A
ROKUHARA, T
ASAKURA, T
HIRAYAMA, N
SUZUKI, S
机构
[1] Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku-ku, Tokyo, 162
来源
JOURNAL OF CHROMATOGRAPHY | 1993年 / 642卷 / 1-2期
关键词
D O I
10.1016/0021-9673(93)80086-N
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Amberlite XAD resin and activated carbon columns were tested for their abilities to concentrate trace organic pollutants in chlorinated water. Both XAD-2 and XAD-7 resin columns (20 ml) were capable of adsorbing about 30% of total organic halogen (TOX) present in 201 of drinking water (pH 7) containing about 100 mug/l of TOX, whereas the carbon column (10 ml) adsorbed over 90% of TOX. The adsorption capacity of XAD-7 resin was found to be strongly dependent on the solution pH, as compared with those of XAD-2 and carbon adsorbents. Soxhlet and sonication extractions were also evaluated for their abilities to recover the adsorbed organics from the adsorbents, by measurements of TOX, chromatographable compounds and mutagenicity in the eluates. Soxhlet extraction gave higher recoveries than sonication, as measured with the above indices, but these differences were generally small (ca. 20%), with exception of the carbon extracts. The XAD-2 and XAD-7 extracts of drinking water also showed about 3-4 times higher mutagenic activity than the carbon extracts.
引用
收藏
页码:185 / 194
页数:10
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