研究论文
崔艳红,叶生发,施治,陶澍,J.Hirotsuji,B.Messaoudi.哈尔滨土壤提取液中的卤代前驱物[J].环境科学学报,2002,22(1):76-79
哈尔滨土壤提取液中的卤代前驱物
- Precusors of THMs in soil extract from Harbin
- 基金项目：博士点基金(No.98000140)
- 作者
- 单位
- 崔艳红
- 北京大学城市与环境学系,地表过程分析与模拟教育部重点实验室,北京 100871
- 叶生发
- 北京大学城市与环境学系,地表过程分析与模拟教育部重点实验室,北京 100871
- 施治
- 北京大学城市与环境学系,地表过程分析与模拟教育部重点实验室,北京 100871
- 陶澍
- 北京大学城市与环境学系,地表过程分析与模拟教育部重点实验室,北京 100871
- J.Hirotsuji
- 日本三菱电机先端技术研究所
- B.Messaoudi
- 日本三菱电机先端技术研究所
- 摘要：通过连续过滤方法和实验室氯化、臭氧化实验研究了哈尔滨地区土壤提取液中天然有机物的卤代活性以及不同形态天然有机物的差异.比较了氯化和臭氧化条件下的卤代烃生成量及处理后的7日卤代潜力.研究结果表明,在数分钟的氯化实验中,憎水有机物、腐殖酸类化合物和非腐殖酸类亲水有机物的单位有机碳卤代烃生成量分别为1.46、0.35和4.03μgmg(C).而7日卤代潜力则分别为66、57.2和40.6μgmg(C).可见其差别不仅表现在热力学方面,而且反应在反应速率方面.在本实验条件下,臭氧化能够降低大约水样的一半卤代潜力.
- Abstract：Fractionation and chlorination/ozonization were combined to study the precursors of THMs in soil extract from Ha'erbin, China. Three fractions, hydrophobic, humic, and nonhumic hydrophilic compounds were compared for their THMFP. It was demonstrated that during a short experimental period, THMs formed from the three fractions were 1.46、0.35 and 4.03μg/mg(C). respectively, After a 7day incubation, however, humic substances generated the highest amount of THMs. The THMFP of the three fractions were 6.6、57.2 and 40.6μg/mg(C), indicating a high THMs formation potential and a relatively slow reaction kinetics of humic substances. Under the experimental condition, the THMFP could be reduced by the ozonization in half.
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