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| DOI：10.13522/j.cnki.ggps.20190244 |
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| Spatial distribution characteristics and pollution assessment of ice-water pollutants during the ice-sealing period in Wuliangsuhai |
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LI Weiping, TENG Fei, YANG Wenhuan, WANG Fei, YU Linghong
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1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China; 2. Baotou Huimin Water Co., Ltd. Baotou 014010, China
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| Abstract: |
| 【Objective】In order to understand the distribution characteristics and pollution level of heavy metals in the Wuliangsuhai during the ice-sealing period, ice samples and underwater water samples were collected for analysis in February 2017. 【Method】The concentration and distribution characteristics of TN, TP and soluble heavy metals Cd, Cr, Cu, Mn, Ni and Zn in the samples were measured. The environmental quality of different water phases in Wuliangsuhai during the ice-sealing period were evaluated by single factor index method and comprehensive pollution index method.【Result】 The results showed that pollutants migrated from ice to water during the ice-freezing period in Wuliangsuhai. TP and TN are the main pollutants. The high value of heavy metals occured in the southern part and the outlet of the lake area, while the low value lied in the central and northeastern part of the lake area. Some locations of Cu and Zn elements reached the Class II standard limits of Surface Water Environmental Quality Standard (GB3838-2002), which should cause special concern.【Conclusion】The pollutants disbribution characteristics during the ice-water period might be useful for the remediation of lake water pollution. |
| Key words: Wuliangsuhai; ice-sealing period; different phase water bodies; pollution assessment |
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