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In order to identify the content of various heavy metals, soils of the farmland surrounding the Huashan's gold tailing mine are studied. Surrounding soil samples are collected in new and old tailing mines. Flame atomic absorption spectrometry is taken to measure the content of Pb, Zn, Cd, Cr, and Cu. In addition, the method of combining the Geo-accumulation index and the potential ecological risk...
To study the spatial distribution characteristics of 10 heavy metals(As, Hg, Mo, Cd, Cr, Zn, Cu, Mn, Pb, Ti) in the soil of Dexing area, Semi-variance function is used to quantitatively describe the structural features of the spatial distribution and map the content distribution. The analysis shows, in addition to cadmium and lead, other elements fit relatively well, which reflects a good spatial...
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...
This study is supported by the agriculture geochemical survey project in Dakang town, Jiangyou city. This paper studies the characteristics of heavy metal pollution in soil and then evaluates heavy metal potentialities in purple soil and paddy soil by adopting the potential ecological risk index(PERI) proposed by Hakanson. In purple soil, the data show that Hg, Cd, and Cu are the top three heavy metals...
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....
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...
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...
By using a hydrothermal treatment process, coal fly ash was transferred to a series of synthesized zeolites and characterized XRD and SEM observations. The synthesized zeolites exhibited more enhanced adsorption capacities for metals compared to the raw material as the increased CEC of the synthesized zeolites apparently provides a better adsorptive ability for metals. For the three synthesized zeolite...
A pot incubation study was conducted to investigate the feasibility of using Daucus carota var. sativa (carrot) and Brassica juncea var. multiceps (potherb mustard) for phytoremediation of Cd-contaminated soils and evaluateing the effects of chelating agents (EDTA, EGTA, DTPA and citric acid) application on metal uptake by both plants. It was shown that, the content of water soluble and exchangeable...
The aim of the present study was to investigate the pollution situation of a closed landfill located in Likeng village, Guangzhou. Soil samples in different depths were collected from the studied area. Among of them, total 108 samples (0~10 cm) of surface soil were analyzed for Cd, Cr, Hg, Ni, Pb and Zn investigation. The samples were digested with HNO3 and HF and HClO4. The concentrations of Cd,...
In order to study the relationship of heavy metals between coconut palm (Cocos nucifera L.) and the environment, concentrations of Cd, Co, Cr, Cu, Ni, Pb, Zn, Ti and V in bark and leaf samples of cocos in Haikou and Sanya cities were analyzed. The results showed that coco barks and leaves are subject to accumulate Cd, Cu, Pb and Zn. All the studied element contents in barks and leaves in Haikou are...
A systematic soil sampling including 32 topsoil samples and 80 subsurface soil samples were collected to investigate the distribution of heavy metal (HM) contents of soils in an industrial area of Zibo, China. Both the total contents and water soluble contents of 6 HM (Cu, Pb, Cd, Cr, As, Hg) were analyzed to assess the enrichment and mobilization ability of the elements. The relative cumulative frequency...
A total of 44 topsoil samples (depth=0~20 cm)and 8 deep-soil samples (depth=150 ~ 200 cm) were collected from urban green space and roadside green belt in Sanya in order to : (1) get the total content of eight heavy metals (Hg, As, Cr, Ni, Cu, Pb, Cd and Zn) in urban soils in Sanya; (2) to identify the degree of heavy metal contamination by comparing with other studied cities; and (3) to determine...
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...
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