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Journal ArticleDOI

Multivariate analysis of heavy metal contamination in urban dusts of Xi’an, Central China

TL;DR: The results indicate that, in comparison with Chinese soil, urban dusts in Xi'an have elevated metal concentrations as a whole, except those of arsenic and manganese, which are comparable to those in other studies.
About: This article is published in Science of The Total Environment.The article was published on 2006-02-15. It has received 1237 citations till now.
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors reviewed quite a few heavy metal contamination related studies in several cities from China over the past 10 years and discussed the concentrations, sources, contamination levels, sample collection and analytical tools of heavy metals in urban soils, urban road dusts and agricultural soils.

1,697 citations

Journal ArticleDOI
TL;DR: This review discussed remediation of PTEs contaminated soils through immobilization techniques using different soil amendments with respect to type of element, soil, and amendment, immobilization efficiency, underlying mechanisms, and field applicability.

630 citations


Cites background from "Multivariate analysis of heavy meta..."

  • ...Lithogenic and anthropogenic PTE sources can be distinguished using isotope ratio analysis, enrichment factors of target and reference elements, geographic information system-based data, and multivariate statistical analysis (Davis et al., 2009; Yongming et al., 2006)....

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Journal ArticleDOI
TL;DR: Multivariate statistical analyses, principal component and cluster analyses, suggest that Mn, Zn, Pb and Ti are derived from anthropogenic sources, particularly coal mining activities, and the extreme proximal and distal parts are heavily contaminated with maximum heavy metals.

619 citations

Journal ArticleDOI
TL;DR: Consumption of vegetables grown on metal-contaminated soil were nutrient deficient and consumption of such vegetables may lead to nutritional deficiency in the population particularly living in developing countries which are already facing the malnutrition problems.
Abstract: Heavy metal contamination is a globally recognized environmental issue, threatening human life very seriously. Increasing population and high demand for food resulted in release of various contaminants into environment that finally contaminate the food chain. Edible plants are the major source of diet, and their contamination with toxic metals may result in catastrophic health hazards. Heavy metals affect the human health directly and/or indirectly; one of the indirect effects is the change in plant nutritional values. Previously, a number of review papers have been published on different aspects of heavy metal contamination. However, no related information is available about the effects of heavy metals on the nutritional status of food plants. This review paper is focused upon heavy metal sources, accumulation, transfer, health risk, and effects on protein, amino acids, carbohydrates, fats, and vitamins in plants. The literature about heavy metals in food plants shows that both leafy and nonleafy vegetables are good accumulators of heavy metals. In nonleafy vegetables, the bioaccumulation pattern was leaf > root ≈ stem > tuber. Heavy metals have strong influence on nutritional values; therefore, plants grown on metal-contaminated soil were nutrient deficient and consumption of such vegetables may lead to nutritional deficiency in the population particularly living in developing countries which are already facing the malnutrition problems.

546 citations


Cites background from "Multivariate analysis of heavy meta..."

  • ...…weathering of building, atmospheric deposition, and house hold solid waste (Amato et al. 2009; De Miguel et al. 1997; Duzgoren-Aydin et al. 2006; Han et al. 2006; Kartal et al. 2006; Lu et al. 2009; Madrid et al. 2002; Morton-Bermea et al. 2009; Oliva and Espinosa 2007; Sezgin et al. 2003; Zhou…...

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  • ...2007), whereas the primary source of pollution in urban soil is anthropogenic one which includes vehicular emission, power plant, tire wear particles, auto repair shops, car wash centers, brake lining, coal combustion, chemical plants, weathering of building, atmospheric deposition, and house hold solid waste (Amato et al. 2009; De Miguel et al. 1997; Duzgoren-Aydin et al. 2006; Han et al. 2006; Kartal et al. 2006; Lu et al. 2009; Madrid et al. 2002; Morton-Bermea et al. 2009; Oliva and Espinosa 2007; Sezgin et al. 2003; Zhou et al. 2008)....

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Journal ArticleDOI
TL;DR: Factor and cluster analyses indicate that Cd is associated with total organic carbon whereas Cu, Cr, Ni, Pb and Zn have a close association with Mn.

523 citations


Cites background from "Multivariate analysis of heavy meta..."

  • ..., EF > 2), it suggests various degrees of metal enrichment (Han et al., 2006)....

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  • ...The assessment criteria are generally based on the EF values (Salomons and Forstner, 1984; Sinex and Wright, 1988; Klerks and Levinton, 1989; Sutherland et al., 2000; Zhang and Liu, 2002; Loska and Wiechu1a, 2003; Han et al., 2006)....

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References
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Journal ArticleDOI
TL;DR: A survey of available computer programs for factor analytic computations and a analysis of the problems of the application of computers to factor analysis.
Abstract: more stodgy and less exciting application of computers to psychological problems. Let me warn you about how I am going to talk today. I have not conducted a survey of available computer programs for factor analytic computations, nor have I done an analysis of the problems of the application of computers to factor analysis in any way that could be considered scientific. I am saying that I shall ask you to listen to my opinions about the applications of computers to factor

9,914 citations

Journal ArticleDOI
TL;DR: A detailed study was conducted to examine total metal contents in bed sediments from a 5.8-km stretch of Manoa Stream as mentioned in this paper, where a total of 123 samples were examined for 18 elements and 14 samples for 21 elements.
Abstract: Of the 117 stream and lake systems sampled nationwide, fish from Manoa Stream on Oahu, Hawaii, have consistently shown the highest Pb concentrations. Therefore a detailed study was conducted to examine total metal contents in bed sediments from a 5.8-km stretch of Manoa Stream. A total of 123 samples (<63 μm) were examined for 18 elements and 14 samples for 21 elements. Selected samples were also examined using different leach solutions to examine metal phase associations. All trace metal data, computations of enrichment ratios and the modified index of geoaccumulation point to mineralogical control for Cr and Ni; minor anthropogenic contamination for Ba, Cd, Cu, Hg and Zn; and a very strong contamination signal for Pb. Maximum Pb contents (up to 1080 mg kg−1) were associated with anthropogenic material dumping in minor tributaries, storm sewer sediments and sediments in the “lower” section of the basin. Proportionally Pb had the highest non-residual component of elements examined; dominantly in the reducible phase associated with Mn and amorphous Fe oxyhydroxides. The contamination signal was typically lowest in the “undisturbed” headwater reach of the basin (above 5.1 km) with significant increases throughout the “residential” and “commercial-institutional” zones of the mid-basin. The spatial pattern of bed sediment contamination and evidence from storm sewer-outlet sediments strongly indicates that Pb, and to a lesser degree some other metals, is still being transported to the stream and the primary agent is soil erosion and transport of metals sorbed to sediments. The primary source of sediment-associated metals is considered to be the automobile, though other minor sources can not be ruled out.

1,468 citations

Journal ArticleDOI
TL;DR: The variability of the bottom sediment loading with metals during the investigations was affected in the first place by changes in the concentration of iron, but also those elements whose concentrations in the top sediment were elevated compared to the concentrations in shale--cadmium, nickel and lead.

635 citations

Journal ArticleDOI
TL;DR: In this article, the particulate concentrations of 17 trace metals, Al, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Ag, Sb, Au, Hg, Pb and Th have been measured in the marine atmosphere (58 samples) and in the deep waters (35 samples) of the Tropical North Atlantic.

606 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the common features and dissimilarities in the origin and nature of street dust in two widely different cities, Madrid (Spain) and Oslo (Norway), between 1990 and 1994.

540 citations


"Multivariate analysis of heavy meta..." refers background in this paper

  • ..., zinc carboxylate complexes and zinc sulphonates) and as detergent/ dispersant improvers for lubricating oils (Miguel et al., 1997)....

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  • ...High Pb concentrations in street dusts have been recognized for a long period as linked mainly to traffic activities due to the utilization of leaded gasoline (Day et al., 1975; Miguel et al., 1997)....

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