| 长江水体氯化过程中强致突变物前驱物的筛选 |
| 摘要点击 858 全文点击 1859 投稿时间：1997-06-16 |
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| 中文关键词 MX GC/MS 长江水体 氯化 溶解态腐殖酸 前驱物 致突变性 |
| 英文关键词 MX GC/MS Yangtze River water chlorination humic acid precursor mutagen |
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| 中文摘要 |
| MX[3-氯-4-(二氯甲基)-5-羟基-2(5H)-呋喃酮]是饮用水液氯消毒中产生的一种具有强致突变性的副产物。利用一系列XAD吸附树脂和大孔离子交换树脂将长江水中的溶解态有机物分离为溶解态腐殖酸类、憎水弱酸类、憎水碱类、憎水中性物类、亲水酸类、亲水碱类6种组分,分别对不同组分的有机物进行氯化处理,用GC/MS选择离子峰面积法测定产物中的MX.结果表明,溶解态腐殖酸类是天然水体中生成MX的重要前驱物,其中的一些酚、醛、芳香酸和芳香酮类化合物可能在MX的形成中起重要作用。 |
| 英文摘要 |
| The strong mutagen,[3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone]MX,was found to be one of the most potent mutagens in chlorinated drinking water.In this study,dissolved organic matters from Yangtze River water were separated into several compound classes by sorbtion on a series of resin absorbents,respectively.After chlorine treatment of the fractions,MX was determined with GC/MS in the selected ion monitoring mode.The results indicated that the humic substances are the most important precursor in the natural waters.Some phenols,aldehydes,aromatic acids and ketones detected in the oxidation products of humic substances and other fractions might play an important role in the formation of MX. |
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