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The contents and characteristics of ten heavy metals in surface sediments from Yangzonghai Lake in Yunnan, China were analyzed. Ecological risk index presented by Håkanson to assess the potential ecological risk of Yangzonghai Lake was utilized. The results showed that the average concentrations of titanium(Ti), manganese(Mn), zinc(Zn), vanadium(V), chromium(Cr), copper(Cu), nickel(Ni), cobalt(Co),...
The research reveals the mobility and distribution of heavy metals (Cd, Cu, Zn, Mn, Ni, and Cr) in soil of sewage irrigation area in Pearl River Delta. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total concentration and available concentration of heavy metals were extracted by HNO3-HF-HClO4 and DTPA respectively. The mean total concentrations for all of the heavy metals...
In order to research the change and distribution characters of heavy metals in the sediment of estuary, sediment grain size, Acid volatile sulfide (AVS) and simultaneously extracted metals(SEM, including Fe, Mn, Sr, Ba, Cr, V, and Co) were analyzed in three sediment short column cores collected form Licun estuary of Jiaozhou Bay. The sediment near the estuary is relative coarse (silty sand) compare...
A typical Chromite Ore Processing Residue (COPR) contaminated site was investigated to ascertain the pollution degree and spatial distribution of Chromium. The drill hole sampling method was used. In the polluted site, 13 holes were drilled. One soil sample was sampled per meter. Total and hexavalent chromium was analyses. Based on the analysis results of the soils, spatial distribution of total and...
Trace elements of sediments from the Jianghan Basin can be used as tracers of the Tree Gorges formation, but it is a prerequisite that grain size of sediments isn't the major controlling factor on trace element abundance. Research on geochemistry and grain-size composition of ZL core in the Jianghan Basin shows: correlation coefficient between trace elements abundance and the fractions of sands, silts...
Environmental quality of reclaimed soil is a key issue in the process of land construction and ecology rehabilitation. Taking Xinzhuangzi and Datong reclamation district for example, according to Nemerow Pollution Index Method, results show that: In all 30 soil samples, 28 samples are I class level, clean; 1 sample is II class level, slightly clean; 1 sample is III class level, polluted slightly....
Soil samples (0-10cm soil layer) were collected from Xuanwei and Fuyuan, which were known as high lung cancer incidence area in Yunnan province, China.The aim of the study was to investigate the trace metal pollution situation of the local village. Total 24 samples of surface soil were analyzed for 32 trace metals. The samples were digested with HNO3 and HF and H2O2 using microwave. The concentrations...
Farmland soil in the suburb is polluted to some degree due to the effect of human activities. In this paper spatial distribution and pattern of copper (Cu), lead (Pb) and zinc (Zn) contents in the farmland soil in suburb of Harbin were analyzed using geostatistics methods. Results of semivariance fitness models showed that contents of Cu and Zn were auto-correlated to a high degree respectively, while...
Total of 120 soil samples from the topsoil (0-20 cm) at an approximate interval of 100 m were collected in Wutan, China, to determine the spatial variability of five heavy metals, Cd, As, Hg, Pb, and Cr, with classical statistical and geostatistical analyses. Ordinary kriging was utilized for estimating heavy metals determination. Classical statistical indicated that As, Pb, and Cr concentrations...
At a stage of rapid economic development and urbanization in China, most cities are faced with such serious problems caused by environment deterioration as pollution, space press, afforestation degradation and disordering. Kunshan City, one of the most economically vigorous regions in China, has suffered a more prominent confliction between urbanization and environmental safety. In this paper, urban...
Dexing mines located in the east of China. They have been exploited for more 20 years and the environment pollution in this area has become very severe. It is very important to assess the spatial-temporal variation of regional environment contamination for monitoring the environment quality variation and contamination trend. 330 Sediment samples in Dexing region were collected and analyzed for As,...
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