Analysis of groundwater contamination due to ammonia and its impact on water supply

氨污染地下水分析及其对供水的影响

• 批准号: 12574005
• 负责人: TAKIZAWA Satoshi
• 金额: $ 9.47万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12574005/
• 关键词: Hanoi; Groundwater; Ammonia; mono-methylamine; di-methylamine; arsenic; organic matter; ピート層; 溶出; 花粉成分分析; 地下水汚染; 水供給; トレーサー; 砒素; 鉄(II); 泥炭層

Groundwater in Hanoi City is contaminated with ammonia, organic matter, and arsenic, but the source and the mechanisms of groundwater contamination was not yet been fully elucidated. In this study, mono-(MMA), di-methylamines (DMA), and the MMA/DMAratio were used as tracers investigatete source and mechanism of groundwater contamination due to ammonia and organic matter in Hanoi City. Water samples (n=116) were collected in August 2000, December 2000, and September 2001, andadditionally soil core samples (n=61) were collected in September 2001. In the contaminated groundwater, strong correlation between ammonia, MMA and DMA indicated that both ammonia and Mas originated from organic degradation. Contaminated surface waters had higher MMA/DMA ratio than in the groundwaters. These results suggest that the major source of MMA in the surface waters is degradation of glycine in proteins contained in domestic wastewater and fish baits, whereas the major source of DMA and MMA in groundwaters is degradation of tri-methylamine (TMA). As a by-product of anaerobic TMA decomposition, DMA accumulates in groundwaters. These different mechanisms of MMA and DMA enrichment in surface and groundwaters makes it possible to use these primary and secondary amine species as tracers of groundwater contamination. Together with the degree of adsorption, namely DMA > MMA > ammonia, which was explained both by the basicity of the free compounds and the solvation behavior of their protonated analogues, we can conclude that the MMA/DMA ratio can be used to identify in situ sources of ammonia and organic matter in underground.

河内城市的地下水被氨，有机物和砷污染，但是尚未完全阐明地下水污染的来源和机制。在这项研究中，由于河内城市的氨和有机物而导致的示踪剂调查液污染物和地下水污染机制，将单（MMA），二甲基胺（DMA）和MMA/DMARATIO用作示踪剂。 2000年8月，2000年12月和2001年9月收集了水样（n = 116），并于2001年9月收集了土壤核心样品（n = 61）。在受污染的地下水中，氨，MMA和DMA之间的牢固相关表明，氨和MAS均来自有机化的有机降解。被污染的地表水的MMA/DMA比高于地下水。这些结果表明，地表水中MMA的主要来源是在家用废水和鱼类诱饵中含有甘氨酸的降解，而地下水中DMA和MMA的主要来源是三甲胺（TMA）的降解。作为厌氧TMA分解的副产品，DMA积聚在地下水中。这些不同的MMA和DMA富集机制在地面和地下水中，可以将这些主要和次要胺物种用作地下水污染的示踪剂。加上吸附程度，即DMA> MMA>氨，这既可以通过游离化合物的碱性和质子化类似物的溶剂化行为来解释，我们可以得出结论，MMA/DMA的比率可以用于鉴定地下氨和有机物的原位鉴定。

项目成果

Tran, T.V.N., Inoue, M., Khatiwada, N.R., Takizawa, S.: "Groundwater contamination due to arsenic, ammonia, iron and organic matter in Hanoi City"Proceedings of Vietnam-Japan Workshop on Groundwater Contamination 2001. 12-16 (2001)

Tran, T.V.N.、Inoue, M.、Khatiwada, N.R.、Takizawa, S.：“河内市砷、氨、铁和有机物造成的地下水污染”2001 年越南-日本地下水污染研讨会论文集。 12-16（

Inoue, M., Nga, T.T.V., Khatiwada, N.W., Takizawa, S.: "Groundwater Contamination Due to Arsenic, Iron, Ammonia and Organic Matter in Hanoi Cit, Vietnam"Proceedings of 10^<th> International Symposium on Natural and Industrial Arsenic Japan. 65-66 (2001)

Inoue, M.、Nga, T.T.V.、Khatiwada, N.W.、Takizawa, S.：“越南河内市砷、铁、氨和有机物造成的地下水污染”第 10 届国际自然与工业研讨会论文集

Nga, T.T.V., Inoue, M., Khatiwada, NR, Takizawa S.: "Heavy metal tracers for the Analysisi of Groundwater Contamination : Case Study in Hanoi City,"Proc.of IWA World Water Congress, Melbourne,. (2002)

Nga, T.T.V.、Inoue, M.、Khatiwada, NR、Takizawa S.：“地下水污染分析用重金属示踪剂：河内市案例研究”，IWA 世界水大会议程，墨尔本。

Inoue, M, Nga, T. T. V., Khatiwada, N. W., Takizawa, S.: "Groundwater Contamination with Ammonia and Arsenic : A Case Study in Hanoi City"Proc. Of 52^<nd> Annual meeting of Japan Water Works Association. 680-681 (2001)

Inoue, M, Nga, T. T. V., Khatiwada, N. W., Takizawa, S.：“地下水氨和砷污染：河内市的案例研究”Proc。

下村彰男: "環境アセスメント技術ガイド:自然とのふれあい"(財)自然環境研究センター. 240 (2002)

Akio Shimomura：“环境评估技术指南：与自然的互动”自然环境研究中心240（2002）。