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| THE EVALUATION OF THE GEOCHEMICAL ENVIRONMENT QUALITY OF SHALLOW UNDERGROUND WATER IN EAST SHANDONG PROVINCE |
| DAI Jie-rui, WANG Cun-long, PANG Xu-gui, ZENG Xian-dong, CHEN Len, ZHEN Wei-jun |
| Shandong Institute of Geological Survey, Jinan 250013, China |
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Abstract Geochemical characteristics of 29 elements or indicators which had been analyzed and tested were studied in this paper on the basis of the shallow groundwater data obtained from the agro-ecological geochemical survey in eastern Shandong Province. the results show that several indicators (such as Mo, Pb, Mn, Fe, Cl-, NO2- and total hardness) in the shallow groundwater of the study area have changed significantly, which has led to the deterioration of local groundwater quality. Other indicators have changed relatively insignificantly and are evenly distributed in the shallow groundwater. In the light of the Quality Standard for Groundwater and Standards for Drinking Water Quality, the authors made single factor and integrated environmental quality evaluation of local shallow groundwater. The results show that the area of shallow groundwater unsuitable for direct drinking accounts for 44.88%, the integrated environmental quality is relatively poor, groundwater pollution occurs in such areas as major cities, industrial and mining enterprises as well as their surrounding districts. Single indicator groundwater pollution assumes point-like or linear distribution, the exceesive indicators include total hardness, total dissolved solids, potassium permanganate index, NO2-, Cl-, F-, Mn, Fe etc. The studies were focused on the formation mechanism of high-density fluorosis in shallow groundwater, and the result provides a basis for prevention and treatment of fluorosis in the study area.
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Received: 16 February 2011
Published: 10 April 2012
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