Background concentrations of elements in soils of China

Chen, Jingsheng; Wei, Fusheng; Zheng, Chunjiang; Wu, Yaodong; Adriano, D. C.

doi:10.1007/bf00282934

Cited by 272 publications

(86 citation statements)

References 2 publications

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“…The trace element scavenging effect of TSS was apparent in the increased contents of the Yangtze particles (Table 5, Annex IV). Comparison with background data for element contents in soils averaged over hundreds of samples in Tibet and all over China, respectively, given by Chen et al (1991) show clear enrichments with factors of 2-7 for most elements, but of up to 40 for Cd and N 100 for Hg. Water quality targets put up by the EC were exceeded by a factor of about two for Cd, Cr, Cu, Zn, and by more than four for Hg (locally up to 16 times for Hg), but were achieved by most other trace elements at most sites.…”

Section: Trace Elementsmentioning

confidence: 93%

How polluted is the Yangtze river? Water quality downstream from the Three Gorges Dam

Müller

Berg

Yao

et al. 2008

Science of The Total Environment

281

132

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Section: Trace Elementsmentioning

confidence: 93%

How polluted is the Yangtze river? Water quality downstream from the Three Gorges Dam

Müller

Berg

Yao

et al. 2008

Science of The Total Environment

281

132

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“…The current increasing rates of trace elements in soils were used to estimate the time (years) required to raise the concentrations of trace elements in topsoil (0-20 cm) from background values (Chen et al, 1991) to the limits regulated by the environmental standards for trace metals in agricultural soils (SEPAC, 2006b). After approximately 400 years, if at present rates, the concentrations of Cu and Zn in soils would exceed their limits, i.e., 100 mg/kg for Cu and 250 mg/kg for Zn, respectively.…”

Section: Environmental Risk Analysis and Managementmentioning

confidence: 99%

An inventory of trace element inputs to agricultural soils in China

Luo

Zhang

et al. 2009

Journal of Environmental Management

551

279

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a b s t r a c tIt is important to understand the status and extent of soil contamination with trace elements to make sustainable management strategies for agricultural soils. The inputs of trace elements to agricultural soils via atmospheric deposition, livestock manures, fertilizers and agrochemicals, sewage irrigation and sewage sludge in China were analyzed and an annual inventory of trace element inputs was developed. The results showed that atmospheric deposition was responsible for 43-85% of the total As, Cr, Hg, Ni and Pb inputs, while livestock manures accounted for approximately 55%, 69% and 51% of the total Cd, Cu and Zn inputs, respectively. Among the elements concerned, Cd was a top priority in agricultural soils in China, with an average input rate of 0.004 mg/kg/yr in the plough layer (0-20 cm). Due to the spatial and temporal heterogeneity of the sources, the inventory as well as the environmental risks of trace elements in soils varies on a regional scale. For example, sewage sludge and fertilizers (mainly organic and phosphate-based inorganic fertilizers) can also be the predominant sources of trace elements where these materials were excessively applied. This work provides baseline information to develop policies to control and reduce toxic element inputs to and accumulation in agricultural soils.

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“…A Holanda foi o primeiro país a formalizar um programa nacional para avaliação de contaminação e estabelecimento de níveis de intervenção, considerando o solo em sua multifuncionalidade, ou seja, as funções de agricultura, ecologia, transporte e suprimento de água potável (Cetesb, 2001). Após a Holanda, vários países como China (Chen et al, 1991) …”

Section: Introductionunclassified

Valores de referência de qualidade para metais pesados em solos do Rio Grande do Norte

Preston

Nascimento

Biondi

et al. 2014

Rev. Bras. Ciênc. Solo

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O crescimento industrial e o populacional têm aumentado os teores de metais pesados nos solos e impactado a qualidade desse recurso. Nesse contexto, as agências de proteção ambiental vêm despendendo esforços para o estabelecimento de índices que possam identificar áreas suspeitas de contaminação. Valores de Referência de Qualidade para Solos (VRQs) refletem a concentração natural de determinada substância no solo, sem interferência antrópica. O trabalho objetivou estabelecer os VRQs para os metais Ag, Ba, Cd, Co, Cr, Cu, Ni, Pb, Sb, V e Zn exigidos pelo Conama, para composição da legislação direcionada ao monitoramento desses elementos nos solos do Estado do Rio Grande do Norte. Foram coletadas 416 amostras de solo em áreas de mata nativa ou com mínima influência antrópica. A abertura das amostras foi efetuada pelo método EPA-3051A, sendo os metais determinados por espectrometria de emissão ótica (ICP-OES) e absorção atômica (AA). Os resultados do trabalho comprovaram que estudos regionalizados são essenciais para definição de VRQs. Os VRQs calculados para o Rio Grande do Norte foram mais restritivos que os de outros estados do país. A análise fatorial de confirmação dos dados foi útil para obtenção de VRQs mais confiáveis e demonstrou que para o Estado esses valores podem ser estabelecidos com apenas duas repetições por local de coleta. Nesse sentido, é primordial um planejamento prévio, de distribuição dos locais de amostragem, de maneira que os diversos compartimentos geomorfológicos, pedológicos e geológicos do Estado sejam representados.

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Background concentrations of elements in soils of China

Cited by 272 publications

References 2 publications

How polluted is the Yangtze river? Water quality downstream from the Three Gorges Dam

How polluted is the Yangtze river? Water quality downstream from the Three Gorges Dam

An inventory of trace element inputs to agricultural soils in China

Valores de referência de qualidade para metais pesados em solos do Rio Grande do Norte

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