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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...
The distribution, profile, sources, and impacts of polycyclic aromatic hydrocarbon (PAHs) in oilfield soils were investigated. The concentrations and distribution of PAHs in soils from five sites (named as S1, S2, S3, S4 and S5) showed different levels of PAHs. The concentrations of total PAHs in the soils ranged from 1340 to 82393 ng/g. The profiles of different number of aromatic rings in each of...
Environmental accidents occur frequently in China in recent years. A quick estimation of the extent and distribution of contamination after environmental accidents is important for immediate treatment of the contaminated sites. This paper proposed a methodology to estimate the velocity and maximum infiltration depth of NAPL after spill accidents to provide quick and quantitative information for the...
Through incubation of one kind of paddy soil with different concentration of phenanthrene, the paper discusses the change of contents and its effect on enzyme activity in the paddy soil. The result indicated that contents of phenanthrene added to soil decreased gradually with incubation day. After incubation for 56d, the content of phenanthrene with high concentration (1.6 and 3.2μg/g ) declined more,...
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