Water Quality Monitoring of the Chirchik River Basin, Uzbekistan
Water Quality Monitoring of the Chirchik River Basin, Uzbekistan
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发表时间：
2012-06
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通讯作者：
Murodjon Nasedjanov;Hirozumi Watanabe;I. Watanabe;Y. Kawabata;Thuyet Dang Quoc
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作者：
Murodjon Nasedjanov;Hirozumi Watanabe;I. Watanabe;Y. Kawabata;Thuyet Dang Quoc
该研究调查了乌兹别克斯坦东北部奇尔奇克河支流中离子污染物和污染物的存在情况。采用离子液相色谱法对采自奇尔奇克河流域的水样进行分析，测定Ca、Mg、K、NH 4、Na、Li、SO 4、NO3、Br、NO2、Cl、F、PO 4等离子。土壤中重金属的植物有效态提取方法参照日本环境省的方法。利用ICP-MS分析了该流域水体中的Cr、Ni、Cu、Zn、V、Mn、Fe、Ga、Ba、As、Mo、Rb、Sr、Sb、Se、Cd、In、Cs、Co、Ag、Hg、Tl、Pb等重金属元素。NO3、NO2、SO 4、NH 4和PO 4等污染物超过了部分水样的MAC值，可能是由于农业和其他工业的排放。结果表明，在固定污染源、机动车道路和居民区附近，大部分离子浓度升高，而As和Sb的浓度在Charvak水库初期较高。
The study investigates occurrence of ionic contaminants and pollutants in the tributaries of the Chirchik River in the northeast part of Uzbekistan. Water samples collected in the Chirchik River Basin were analyzed by ion liquid chromatography to determine ions such as Ca, Mg, K, NH4, Na, Li, SO4, NO3, Br, NO2, Cl, F, PO4. Plant available forms of heavy metals in soils were extracted according to the methods established by Japanese Ministry of Environment. Elements such as Cr, Ni, Cu, Zn, V, Mn, Fe, Ga, Ba, As, Mo, Rb, Sr, Sb, Se, Cd, In, Cs, Co, Ag, Hg, Tl, Pb were detected with the help of ICP-MS. Toxic heavy metals such as Hg, Cd and Pb were not detected in all water samples, while Fe and Ba exceeded the Maximum Admissible Concentrations (MAC) in several sites in the watershed. Contaminants such as NO3, NO2, SO4, NH4 and PO4 exceeded the MAC values for some water samples probably due to discharges from agriculture and other industries. It was noticed that the level of most ions increased near to stationary sources, automobile road and residential area while the concentrations of As and Sb were initially high in the Charvak water reservoir.