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A regional scale survey investigated accumulation of Cu and Zn in wheat and agricultural soil from the Yangtze River delta region, China. A total of 126 pairs of topsoil and wheat samples were collected to analyze Cu, Zn and relevant parameters. 7.9% and 21.4% of the wheat grain samples exceed Chinese maximum permitted concentrations of Cu and Zn in wheat grain (Cu: 10mgkg −1 , Zn: 50mgkg...
This study dealed with the distribution and the origin of trace elements (Co, Cd, Mn, Ni, Zn, Tl and Pb) in two soil profiles from a site near a plant roasting pyrite for sulfuric acid production. Chemical partitioning of the trace elements showed that Tl and Pb in each individual extractable fraction(i.e. weak acid exchangeable, reducible and oxidizable)presented increasing trend upward through the...
The Zhuhai city in Pearl River Delta was chosen as a study area. The soil samples were recollected according to the sampling points of Second National Soil Survey. Based on application of geographical information system (GIS) and SPSS software, the content, distribution and its influence factors of available Cu in cultivated soils were analyzed. The results showed that: the average available copper...
39 indigenous plant species in 18 families were collected and investigated in four heavy-metal polluted sites. The tolerance and hyptoextraction characteristics of them to Cd, Pb, Cu, Zn and As were examined. In field survey, Bidens bipinnata, Artemisia dubia, Polygonum lapatuifolium, Chenopodium ambrosioides and Solanum nigrum showed to concentrate remarkable heavy metal in shoots. In the further...
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...
The urban environment quality is of vital importance as the majority of people now live in cities. Due to the continuous urbanization and industrialization in many parts of the world, metals are continuously emitted into the urban environment and pose a great threat on human health. In this study, a total of 38 soil samples were collected from Weinan industrial urban areas, NW, China, and the concentrations...
21 Sedimentary samples were taken from the rivers in north part of Anhui province, China. The contents of 8 heavy metal elements (Be, Cd, Cr, Cu, Pb, Ni, Mn, and Zn) were determined by ICP-MS. Organic matter contents in sediment were also tested. The results show that the different degree enrichments of heavy metals in sediments are appearing as compared with the average values of heavy metal contents...
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 heavy metal pollution has increasing applied pressure on land resources with the intensive effects of local geochemistry or human activities in recent years. This investigation was conducted to understand the spatial variability of the soil heavy metal elements, to evaluate the relationship between heavy metals and their probable sources and to identify or forewarn the probable heavy metal contamination...
Contents of heavy metals in six vegetable species and the corresponding rhizospheric soils around a lead-zinc mining and smelting plant in Nanjing, China were investigated to assess the possible risks of heavy metal posed to human health through food chain and to discuss the relationships of heavy metals contents in vegetables and the corresponding rhizospheric soils. Compared to national sanitation...
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...
Given a description of city environment of Zhuzhou from the geochemical and geological environment, the author carried out further research on city ecological geochemistry and discussed the pollution of soil heavy metal through correlations analysis, R-cluster analysis and classified statistic of parent rock.
Soil samples of 0-15cm from 9 sampling sites including different functional zones and different greening types of Shanghai, China were collected and analyzed. The results showed the average concentration of Cu, Pb, Zn and Cd in soil of shanghai were up to 42.33,169.58,49.06, and 0.2460mg/kg, respectively, which were much higher than their natural background values. Among the functional zones and the...
The Yangtse delta area is one of the most rapidly developing areas in China. There are mega-cities like Nanjing and the surrounding urban areas of different sizes. As a traditional historical and industrial city, Nanjing city was investigated for heavy metals in its soil. Based on spatial characteristic of Nanjing City, 12 samples were regarded as descriptions of different function zone in urban area...
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...
The multifractal is a suitable method for analyze the irregularity and self-similarity of metallogenic elementary grade distribution. Taking the soil survey data along multiple exploration lines in the Shangzhuang gold deposit, Shandong province, China, as the object, using the generalized dimension and multifractal spectrum, the inhomogeneity and heterogeneity distributions of different mineralization...
This study attempts to evaluate the spatial variability characteristic of soil heavy metals in different industrial types. Therefore, concentrations of heavy metals in soils with different distances from solid, liquid and gas point source and nonpoint source were measured in Yixing, an area with intensive industrialization in Yangtze River Delta of China. The results show that 1) the enrichment of...
This investigation was conducted to understand the spatial variability and distribution of trace metals in soil by using geostatistics combining with GIS. Chongming island of Shanghai, the world biggest narrow and long alluvial island was selected as the study area. The most spatially auto-correlated lag sizes and appropriate analytic scale were explored from detailed investigation for each factors...
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...
The Simulation of heavy metal contamination in surface soils has been discussed in the paper. Instead of the acquisition of the ldquobestrdquo estimation of unsampled points, the author paid much attention to the assessment of the spatial uncertainty about unsampled values. The simulation method of Geostatistics, aimed at the same statistics (histogram, Variogram), can generate a set of equally-probable...
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