氯化消毒饮用水中强致突变物MX[3-氯-4-(二氯甲基)-5-羟基-2(5H)-呋喃酮]的形成
FORMATION OF STRONG MUTAGEN [3-CHLORO-4-(DICHLOROMETHYL)-5-HYDROXY-2(5H)-FURANONE] MX IN CHLORINATED DRINKING WATER
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摘要: 利用一系列XAD吸附树脂及大孔阴、阳离子交换树脂,将太湖水中溶解态有机物分离为溶解态富里酸类、腐殖酸类、憎水弱酸类、憎水碱类、憎水中性物类、亲水酸类、亲水碱类七种组分,分别对不同组分的有机物进行氯化处理后,用GC/MS选择离子峰面积法测定了产物中的MX[3-氯-4-(二氯甲基)-5-羟基-2(5H)-呋喃酮]。结果表明,太湖水体中的溶解态腐殖酸类可能是生成MX的重要前驱物。Abstract: Dissolved organic matter from Taihu lake water was isolated and fractionated into seven fractions of fulvic acids, humic acids, hydrophobic weak acids, hydrophobic neutrals, hydrophobic bases, hydrophilic acids, hydrophilic bases by sorbtion on a series of resin absorbents. After chlorine treatment of the fractions MX [3-chloro-4-(dichloromethyl)-5-hydroxy-2 (5H)-furanone] was determined with GC/MS in the selected ion monitoring mode. Results suggest that the fulvic acids might be the most important precursor.
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Key words:
- MX /
- GC/MS /
- TOC /
- chlorination /
- fraction
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