| 广东省主要土类的三卤甲烷生成潜能(THMFP) |
| 摘要点击 1584 全文点击 1385 投稿时间：2001-01-01 |
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| 中文关键词 土壤 三卤甲烷前驱物质 三卤甲烷生成潜能 |
| 英文关键词 soil trihalomethane precursor trihalomethane formation potential (THMFP) |
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| 中文摘要 |
| 通过振荡浸出实验,测定了广东省几种主要土类的三卤甲烷生成潜能(THMFP),比较了土壤浸提液中溶解态(可过滤态)有机物与悬浮态(不可过滤态)有机物在形成三卤甲烷(THMs)中的作用,并对影响土壤THMFP的各种因素进行讨论结果表明:①各主要土类表层土中,未过滤浸提液的整体THMFP(b-THMFP)含量范围为:0.7～36.8μg/g土,中值为10.6μg/g土;过滤浸提液的THMFP(指可溶性有机物的THMFP,即d-THMFP)含量范围为:0.5～21.2μg/g土,中值为3.9μg/g土;其中,19号石灰土的b-THMFP和d-THMFP最高,20号紫色土的b-THMFP最低,5号赤红壤的d-THMFP最低.②总体上,悬浮态有机物对THMs生成量有较大的正贡献.③影响土壤THMFP的因素主要是有机质含量、各种氧化物含量、土壤发生层次、植被等. |
| 英文摘要 |
| Trihalomethane formation potentials were analyzed with the lixivia of typical soil samples in Guangdong Province The results showed that the bulk THMFP contents of soil lixivia (b-THMFP) range from 0.7 to 36.8μg/g with a median value of 10.6μg/g, and the THMFP contents of 0.45μm filtered soil lixivia, representing the THMFP contents of dissolved organic matter (d-THMFP), from 0.5 to 21.2μg/g with a median value of 3.9μg/g Sample 19 (Calcareous soil) had the highest b THMFP and d THMFP while sample 20 (Purple soil) had the lowest b THMFP and sample 5 (Latored soil) had the lowest d THMFP In general, suspended organic matter had great contribution to the THMFP The physico chemical properties, such as organic matter contents and contents of various oxides, as well as soil genetic horizon and vegetation are main factors dominating the THMFP levels in the soil |
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