Mo Contamination in Rivers near the Erdenet Mining Area, Mongolia: Field Evidence of High Mobility of Mo at pH >8
Mo Contamination in Rivers near the Erdenet Mining Area, Mongolia: Field Evidence of High Mobility of Mo at pH >8
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蒙古额尔登特矿区附近河流中的钼污染：pH 值下钼高流动性的现场证据
DOI：
10.1021/acsestwater.1c00046
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Fukushi Keisuke
中科院分区：
文献类型：
--
作者：
Tsetsgee Solongo;Okuyama Akihiro;Ochir Altansukh;Yunden Ariuntungalag;Odgerel Enkhjin;Batbold Taivanbat;Munkhsukd Enkh-Uur;Takahashi Yoshio;Munemoto Takashi;Honda Masato;Fukushi Keisuke
虽然最近的研究指出Mo是自然水体中人为污染的候选物质，但关于河水中Mo污染的研究很少。蒙古的额尔登特（Erdenet）钼矿是世界上最大的钼矿之一。2018年3月至11月，我们对额尔登涅特矿区周边河流水体Mo浓度进行了系统的时空监测，结果表明，额尔登涅特矿区下游的康加尔河夏季Mo浓度超过70 μg/L（世界卫生组织健康指南）。河水中钼的来源是额尔登特电厂冷却用地下水和矿山尾矿库渗漏。Mo浓度与河水pH值呈正相关。室内吸附实验证实，Mo浓度的pH依赖性来源于河流沉积物中氧化铁的吸附/解吸反应。在污染源下游10公里处，河水中的钼浓度仍然较高。我们的观察提供了Mo在河水中的高溶解度和流动性的现场证据，这是由于Mo在pH为bbbb8的水中吸附在氧化铁上的分布系数较低所致。
Although recent research points to Mo as a candidate for anthropogenically induced contamination of natural waters, there has been little research on Mo contamination in river water. The Erdenet mine in Mongolia is the one of the largest Mo mines in the world. Our systematic temporal and spatial monitoring of Mo concentrations in river waters around the Erdenet mine from March to November 2018 showed that in the Khangal River, which is downstream of the Erdenet mining area, Mo concentrations exceeded 70 μg/L (the World Health Organization health-based guideline) during summer. The sources of the Mo in river water are groundwater used for cooling in the Erdenet power plant and seepage from mine tailing ponds. Mo concentrations had a positive correlation with the pH of the river water. Laboratory adsorption experiments confirmed that the pH dependency of Mo concentrations originates from the adsorption/desorption reactions of iron oxide in the river sediments. Mo concentrations in river water were still higher 10 km downstream of the contamination sources. Our observations provided field evidence of high solubility and mobility of Mo in river water that were caused by the lower distribution coefficients of Mo adsorbed on iron oxides in water at pH >8.
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影响因子：
5.8
作者：
Batsaikhan, Bayartungalag;Kwon, Jang-Soon;Yun, Seong-Taek
通讯作者：
Yun, Seong-Taek
天然地表水中的钼：含量和出现形式（综述）
影响因子：
--
作者：
P. Linnik;I. Ignatenko
通讯作者：
I. Ignatenko
影响因子：
5.6
作者：
Yan Zhang;V. Gladyshev
通讯作者：
Yan Zhang;V. Gladyshev
中性岩石排水中钼的溶解度控制
DOI：
10.1144/1467-7873/10-ra-043
发表时间：
2012
期刊：
--
影响因子：
--
作者：
M. Conlan;K. Mayer;R. Blaskovich;R. Beckie
通讯作者：
R. Beckie
影响因子：
3.4
作者：
Berger, AC;Bethke, CM;Krumhansl, JL
通讯作者：
Krumhansl, JL