20471164

Source:http://linkedlifedata.com/resource/pubmed/id/20471164

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0008115, umls-concept:C0024488, umls-concept:C0037592, umls-concept:C0337050, umls-concept:C0347988, umls-concept:C0549193, umls-concept:C0563532, umls-concept:C0679083, umls-concept:C0870071, umls-concept:C1539327, umls-concept:C1706907, umls-concept:C1710133
pubmed:issue	1-3
pubmed:dateCreated	2010-6-1
pubmed:abstractText	It is crucial to separate the soil geochemical background concentrations from anthropogenic anomalies and to provide a realistic environmental geochemical map honoring the fluctuations in original data. This study was carried out in the Hengshi River watershed, north of Guangdong, China and the method proposed combined exploratory data analysis (EDA), sequential indicator co-simulation (SIcS) and the ratio of isothermal remnant magnetization (S(100)=-IRM(-100 mT)/SIRM). The results showed that this is robust procedure for defining and mapping soil geochemical background concentrations in mineralized regions. The rock magnetic parameter helps to improve the mapping process by distinguishing anthropogenic influences. In this study, the geochemical backgrounds for four potentially toxic heavy metals (copper 200mg/kg; zinc 23 0mg/kg; lead 190 mg/kg and cadmium 1.85 mg/kg) Cu, Zn and Cd exceeded the soil Grade II limits (for pH<6.5) from the Chinese Environmental Quality Standard for Soils (GB 15618-1995) (EQSS) which are 100, 200, 250 and 0.3mg/kg for Cu, Zn, Pb and Cd, respectively. In particular, the geochemical background level for Cd exceeds standard six times. Results suggest that local public health is at high-risk along the riparian region of the Hengshi River, although the watershed ecosystem has not been severely disturbed.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/9422688
pubmed:citationSubset	IM
pubmed:chemical	http://linkedlifedata.com/resource/pubmed/chemical/Metals, Heavy
pubmed:status	MEDLINE
pubmed:month	Aug
pubmed:issn	1873-3336
pubmed:author	pubmed-author:XiaBeichengB, pubmed-author:ZhouXuX
pubmed:copyrightInfo	Copyright 2010 Elsevier B.V. All rights reserved.
pubmed:issnType	Electronic
pubmed:day	15
pubmed:volume	180
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	542-51
pubmed:meshHeading	pubmed-meshheading:20471164-China, pubmed-meshheading:20471164-Magnetics, pubmed-meshheading:20471164-Metals, Heavy, pubmed-meshheading:20471164-Models, Theoretical, pubmed-meshheading:20471164-Stochastic Processes, pubmed-meshheading:20471164-Uncertainty
pubmed:year	2010
pubmed:articleTitle	Defining and modeling the soil geochemical background of heavy metals from the Hengshi River watershed (southern China): integrating EDA, stochastic simulation and magnetic parameters.
pubmed:affiliation	School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China. xuzhou228@yahoo.cn
pubmed:publicationType	Journal Article, Research Support, Non-U.S. Gov't