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The objective of this study is, basing on the geochemical survey project of agriculture land, to assess the pollution levels of heavy metal in agriculture soil in Weicheng town, Mianyang city. The pollution assessments to soil heavy metals are performed by introducing SF (single factor) and CF (combined factors) pollution index analysis. The evaluation shows that there are obvious differences of heavy...
Yunfu pyrite deposit bearing thallium (Tl) with proven reserves of three million tons' Tl in Guangdong Province, China has been extensively exploited since 1970. This study investigated contamination levels of Tl and other trace metals in ecosystem such as soils, surface waters, vegetables and crops in the area near the deposit. Results show that Tl in these samples nearby has greatly enriched and...
Groundwater vulnerability is basement of evaluating risk of groundwater contamination and groundwater vulnerability assessment is one of management methods for preserving the quality of groundwater. Based on DRASTIC model and GIS techniques, shallow groundwater vulnerability assessment was carried out in Xiangcheng City, China. The results indicate that the studied area can be divided into three zone:...
Contamination of the shallow aquifer by elevated nitrate concentrations is a common problem in many rural regions of the world. An aquifer that has both aquifer intrinsic vulnerability and irrigated land uses is especially susceptible to this type of contamination. A study was carried out to evaluate an aquifer's intrinsic vulnerability and agricultural activity's impact on groundwater quality in...
In recent years, much attention has been paid to the problem of farmland soil contamination by heavy metals in China. Cadmium (Cd) is an important heavy metal which can cause adverse ecological effects, in particular, can be easily accumulated by rice plants. On the basis of determining the concentrations of Cd in 303 farmland soil samples from the rice producing area in the Luxian County, Sichuan...
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