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This study is supported by the agriculture geochemical survey project in Dakang town, Jiangyou city. By analyzing the heavy metals and organic pollutants contained in the surface soil, a assessment of soil quality is made in the study area by introducing single-index and comprehensive-index evaluation analysis, as well as by using GIS .The evaluation shows that nearly 1/3 areas of the land in the...
In this paper, a probe into the stabilization effects of ferrous sulfate (FeSO4) came from two aspects-stabilization efficiency and leachate content. Fe/As molar ratio, arsenic pollution intensity, soil pH, reacted time interval, competitive ions, such as sulfate(SO42-), phosphate(PO43-) and zinc ion(Zn2+), were studied in order to discuss their effects on the stabilization of arsenic. Results show...
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...
The crude recycling of electronic waste (e-waste) in developing counties such as China has presented a significant environment pollution that affects both ecosystems and the people living within or near the main recycling areas in recent years. Although several studies have reported concentrations of trace metals and several typical toxic organic pollutants in various environmental compartments at...
The research reveals the level and chemical forms of lead in soil of sewage irrigation area in Guangdong province, South China. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total content and different fractions of lead were extracted by HNO3-HF-HClO4 and Tessier sequential extraction procedure, respectively. It is concluded that the soil of study area has been contaminated...
This paper is a pilot study on the effect of grass- microorganism combined bioremediation of atrazine contaminated soil. Sorghum hybird sudangrass and ryegrass were selected as two repair grass, and immobilized degrading strain J2 was added into the soil under the indoor pot conditions. When the concentration of atrazine was 20 mg/kg in the soil, grass-microorganism combined bioremediation enjoyed...
Restoration of petroleum-contaminated soil is one of the most important issues of environment protection all over the world. In order to study the influence of pollution concentration on biodegradation, a specific exogenous microbe, Phanerochaete chrysosporium, was employed for bioremediation of soil contaminated by different concentrations of petroleum. After 60d of treatment, the degradation rate...
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