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The research reveals the relationship and enrichment of heavy metals in soil of sewage irrigation area in Guangdong province, southern China. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total concentrations of heavy metals were extracted by HNO3-HF-HClO4. It is concluded that Cu, Zn, Cd, and Pb may be homologous or combined pollution, and Mn and Cr may be also homologous...
Heavy metal pollution is a worldwide problem. Phytoremediation is an effective and low-cost interesting technology. Sugarcane (Saccharum officinarum L.) could be a promising candidate for phytoremediation on metal-contaminated soils due to its high biomass, faster growth and moderate takeup and accumulation of heavy metals such as Cu, Cd, Se, Pb and Mn. As a follow-up processing of sugarcane, bagasse...
Soil pollution is a worldwide problem. Both inorganic and persistent organic pollutants (POPs) possess high toxicity and long-term persistence. Biosurfactant based remediation technologies for contaminated soil are of increasing importance recently, and they have been demonstrated to be effective in uptaking both heavy metals such as Cd, Pb, Zn, Cu, and organic pollutants like hydrophobic organic...
Atmospheric deposition samples were collected and analyzed from 50 sampling sites in Baoshan district, Shanghai. The results show that the average concentration of Pb, Cr, Cd, Zn and Cu is 281.88, 254.45, 7.06, 2433.92 and 3321·08mg-kg-1 respectively, which are much higher than background values of soil in Shanghai. The spatial distribution features of live heavy metals illustrate higher concentrations...
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...
In this paper, the content and chemical speciation of a heavy metal element, Cd, were studied from 63 urban soil samples extracted from five different functional areas, Industrial Area, Commercial Area, Scenic Area, Agricultural Area, and Residential Area, of Qingdao. The analysis results indicated the Cd content in soil was 0.2211 - 3.040 mg/kg, with an average value of 1.289 mg/kg. The contamination...
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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