Multivariate analysis of heavy metals in surface sediments from lower reaches of the Xiangjiang River, southern China

Mao, Longjiang; Mo, Duowen; Guo, Yuanyuan; Fu, Qiang; Yang, Jinghong; Jia, Yunfeng

doi:10.1007/s12665-012-1959-6

Cited by 74 publications

(34 citation statements)

References 29 publications

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“…The mean Cr concentration in our samples was 1.93 times higher than the mean concentration in Chinese sediment, and the mean Ni and Se concentrations in our samples were 1.90 and 1.07 times higher, respectively, than the mean concentrations in Chinese sediment. However, the mean Cd, Cu, Pb, and Zn concentrations in our samples were lower than the mean concentrations in Chinese river and lake sediment (Niu et al 2009;Yin et al 2011;Cheng et al 2012;Huang et al 2012;Mao et al 2013;Wei and Wen 2012;).…”

Section: Environmental Factors and Anthropogenic Activitiescontrasting

confidence: 74%

Heavy metals in surface sediments of the shallow lakes in eastern China: their relations with environmental factors and anthropogenic activities

Zhang

Jin

et al. 2016

Environ Sci Pollut Res

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The aquatic environment is affected by heavy metal pollution. This study was conducted to test the hypothesis that environmental factors and anthropogenic activities influence the distributions and the risks posed by heavy metals in surface sediments in shallow lakes in eastern China, which is an area affected by rapid urbanization, industrialization, and population growth. Total Cd, Cr, Cu, Ni, Pb, Se, and Zn concentrations in sediment samples were determined using inductively coupled plasma optical emission spectrometry. The I geo showed that sediments in the lakes were moderately polluted with Cr,Cu,Pb,and Zn,and the EF method showed that Cd and Se were significantly enriched in lakes. The heavy metals were found to pose moderate risks in most of the lakes, except for Gaoyou Lake, Honghu Lake, Poyang Lake, and Weishan Lake. The RI method indicated that very high risks were posed in Dongting Lake and Poyang Lake. Cd was found to pose much higher levels of risk than the other metals. Significant correlations were found between the heavy metal concentrations and the total carbon, nitrogen, phosphorus, and sulfur concentrations. The gross domestic product represented anthropogenic activities well. The gross domestic product of an area and the gross domestic products of primary and secondary industries in an area all had significant relationships with the concentrations of Cu and Pb, indicating that anthropogenic activities have different impacts on pollution with different heavy metals. The gross domestic product index was found to be a driving force behind the pollution of lakes with heavy metals.

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Section: Environmental Factors and Anthropogenic Activitiescontrasting

confidence: 74%

Heavy metals in surface sediments of the shallow lakes in eastern China: their relations with environmental factors and anthropogenic activities

Zhang

Jin

et al. 2016

Environ Sci Pollut Res

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“…Application of the KMO test resulted in a coefficient of 0.71, demonstrating that the sample size of the water quality dataset was adequate for PCA, since there was sufficient redundancy in the data to perform the factor analysis. Similar values, using similar sample sizes, were obtained in other water quality studies in watersheds (Gumbo et al 2016;Mao et al 2013). Table 3 provides the correlation matrix, while Table 4 shows the significances of the correlations.…”

Section: Correlation Structure and Multivariate Analysissupporting

confidence: 64%

“…It is not appropriate to apply factor analysis when the correlations among the variables are near zero or very weak, because it is not possible to summarize the information. The KMO value ranges from 0 to 1, with values above 0.6 indicating that the variables and samples evaluated are suitable for factor analysis (Gumbo et al 2016;Gholizadeh et al 2016;Mao et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Water quality, pollutant loads, and multivariate analysis of the effects of sewage discharges into urban streams of Southeast Brazil

Medeiros

Tresmondi

Queiroz

et al. 2017

Energ. Ecol. Environ.

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Water demand, pollution, and climate change threaten water security in industrialized and urbanized regions worldwide, especially in developing countries. Investments in massive infrastructure have often not met the water needs of the population, requiring water resource managers to adopt new approaches, such as decentralized and regionalized management at the micro-basin scale. However, little is known about the impact of anthropogenic activities on the water quality and vulnerability of streams that cross urban areas and feed into the main rivers and reservoirs supplying cities and industrial regions. The main goals of this research were to evaluate the water quality, pollutant loads, and effect of untreated sewage discharges in streams of the Piracicaba river basin, in the municipality of Americana, Southeast Brazil. The water quality parameters evaluated were as follows: pH, dissolved oxygen, electrical conductivity, biochemical oxygen demand, inorganic phosphorus, total phosphorus, total nitrogen, real colour, turbidity, total dissolved solids, metals (Ba, Cr, Cu, Ni, Pb, Cd, and Zn), total coliforms, and Escherichia coli. Descriptive statistics and multivariate analyses were performed. The results revealed chemical and biological degradation of the water resources, and vulnerability of the urban streams due to the release of untreated sewage into these waterways. The findings indicate the need for an immediate implementation of policies to monitor and control discharges of industrial effluents into the sewage collection systems, as well as discharges of sewage into rainwater drainage systems, together with the maintenance of green spaces.

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“…Therefore, the spread of pollutants, particularly of toxic metals, to the aquatic ecosystems is increasingly worrying (3). Riverine sediments play an important role in the overall geochemical cycle and provide a reasonable history of pollution in the river (4)(5)(6)(7). Sediments act mainly as both carriers and sinks for contaminants in aquatic environments (8).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Heavy Metal Contamination in Surface Sediment of the Darreh-Morad Beyg River

2016

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Background and Purpose: The heavy metal pollution and its fractionations in the surface sediments of Darreh-Morad Beyg River, Hamedan City were monitored for Cd, Cr, Cu, Fe, Ni, Pb, and Zn in 2014. Materials and Methods: Totally 30 surface sediment samples were taken from 10 stations with three replicates. The samples subjected to bulk digestion and chemical partitioning. The concentrations of heavy metals in sediment were determined by ICP-OES. I-geo, EF, CF, and PLI were also used to assess the sediment contamination. Results:The results of the present study showed that the proportions of residual fraction for Cu, Ni, Pb, Cd and especially Cr (93.61%) were relatively high, which implied their lower pollution risks due to low mobility characterization, while Zn was mainly associated with the anthropogenic portion of the existing pollution which meant an increase in mobility for this element. Also, on the basis of the mean, the I-geo values of metals were found in the following order: Cr>Cu>Zn>Ni>Pb>Fe>Cd. At the same time, the average EF of metals in the sediment samples was in the order of Cr>Cu>Zn>Ni>Pb>Fe>Cd. According to the calculated PLI, the pollution class of heavy metals in sediments from the Darreh-Morad Beyg River was between 1 and 2, indicating a moderately polluted degree. Conclusion: Regarding the high Zn concentrations in sediments, it is likely that this element is a major hazard for the aquatic environment since it is mainly found in the anthropogenic portion. Also, Cu, Ni, Pb, Cd, and Cr are present in the greatest percentages in the residual fraction, which implies that these metals are strongly linked to the sediments.

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Multivariate analysis of heavy metals in surface sediments from lower reaches of the Xiangjiang River, southern China

Cited by 74 publications

References 29 publications

Heavy metals in surface sediments of the shallow lakes in eastern China: their relations with environmental factors and anthropogenic activities

Heavy metals in surface sediments of the shallow lakes in eastern China: their relations with environmental factors and anthropogenic activities

Water quality, pollutant loads, and multivariate analysis of the effects of sewage discharges into urban streams of Southeast Brazil

Assessment of Heavy Metal Contamination in Surface Sediment of the Darreh-Morad Beyg River

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