Application of multiple ecological risk indices for the evaluation of heavy metal contamination in a coastal dredging area

Kwon, Young-Tack; Lee, C.-W.

doi:10.1016/s0048-9697(98)00069-2

Cited by 74 publications

(21 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To assess the extent to which the health of Jafari Creek has declined due to inputs of heavy metals, Background Enrichment indices, including Contamination factor and Contamination degree, were calculated for the study area. The contamination factor (C f ) is defined as the contamination of a given toxic substance in a basin as below (Hakanson, 1980;Kwon and Lee, 1998):…”

Section: Methodsmentioning

confidence: 99%

“…In this regard, C f <1 represents a low contamination factor (indicating low sediment contamination of the studied factor), 1d" C f <3 represents a moderate contamination factor, 3d" C f <6 represents a considerable contamination factor and C f ≥ 6 represents a very high contamination factor (Hakanson, 1980;Asku et al, 1997;Nasr et al, 2006;Dehgan et al, 2008). The degree of contamination (C d ) is defined as the sum of all contamination factors for various heavy metals (Hakanson, 1980;Kwon and Lee, 1998):…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial distribution and assemblage structure of macrobenthos in a tidal creek in relation to industrial activities

Mooraki

Sari

Soltani

et al. 2009

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

ABSTRACT:The impact of petrochemical special economic zone activities on the health status of Jafari Creek was studied by assessing the changes in macroinvertebrate assemblages in nine sites during September 2006-January 2008. The relationship between spatial pattern of macroinvertebrate assemblages and ambient factors (i.e. water temperature, salinity, pH, dissolved oxygen, sediment grain size distribution, sediment organic content, heavy metals contents) was measured. Background enrichment indices, contamination factor and contamination degree, were used to assess the health status in the study area based on nickel, lead, cadmium and mercury contents of the sediments. The macrobenthic communities had a low diversity and were dominated by opportunistic taxa. The BIO-ENV analysis identified salinity, dissolved oxygen, pH and silt/clay content of sediments as the major environmental variables influencing the infaunal pattern. This suggests that management should attempt to ensure minimal disturbance to environmental variables underlying the spatial variation in macroinvertebrate assemblages. Background enrichment indices showed that the health of Jafari Creek has declined over time due to the constant discharge of heavy metals to the Creek system. These indices also identified a significant degree of pollution in the study area. The decrease in the ecological potential of Jafari Creek was best highlighted by the alteration in macrobenthic assemblages.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Spatial distribution and assemblage structure of macrobenthos in a tidal creek in relation to industrial activities

Mooraki

Sari

Soltani

et al. 2009

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…To date, many methodologies have been developed to assess ecological risks of heavy metals [15][16][17]. However, most of them are suitable only for ecological risk assessment of a single contaminant (e.g., the geoaccumulation index method) [17,18].…”

Section: Introductionmentioning

confidence: 99%

Distribution and speciation of heavy metals in sediments from the mainstream, tributaries, and lakes of the Yangtze River catchment of Wuhan, China

Yang¹,

Wang²,

Shen³

et al. 2009

Journal of Hazardous Materials

424

157

View full text Add to dashboard Cite

“…Particular emphasis is placed on the study of risk assessment for heavy metals (Steiger et al 1996;McGraph et al 2004). There is a need to analyze the contamination level and the biological effect rather than to simply compare the heavy metal contents (Kwon and Lee 1998).…”

Section: Introductionmentioning

confidence: 99%

Ecological risk of heavy metals in sediments of the Luan River source water

et al. 2009

View full text Add to dashboard Cite

Distribution and characteristics of heavy metals enrichment in sediment were surveyed including the bio-available form analyzed for assessment of the Luan River source water quality. The approaches of sediment quality guidelines (SQG), risk assessment code and Hakanson potential ecological risk index were used for the ecological risk assessment. According to SQG, The results show that in animal bodies, Hg at the sampling site of Wuliehexia was 1.39 mg/kg, Cr at Sandaohezi was 152.37 mg/kg and Cu at Hanjiaying was 178.61 mg/kg exceeding the severe effect screening level. There were 90% of sampling sites of Cr and Pb and 50% sites of Cu exceeded the lowest effect screening level. At Boluonuo and Wuliehexia, the exchangeable and carbonate fractions for above 50% of sites were at high risk levels and that for above 30% of sites at Xiahenan and Wulieheshang were also at high risk levels. Other sites were at medium risk level. Compared to soil background values of China, Hg and Cd showed very strong ecological risk, and the seven heavy metals of Hg, Cd, Cu, As, Pb, Cr, Zn at ecological risk levels were in the descending order. The results could give insight into risk assessment of environmental pollution and decision-making for water source security.

show abstract

Application of multiple ecological risk indices for the evaluation of heavy metal contamination in a coastal dredging area

Cited by 74 publications

References 4 publications

Spatial distribution and assemblage structure of macrobenthos in a tidal creek in relation to industrial activities

Spatial distribution and assemblage structure of macrobenthos in a tidal creek in relation to industrial activities

Distribution and speciation of heavy metals in sediments from the mainstream, tributaries, and lakes of the Yangtze River catchment of Wuhan, China

Ecological risk of heavy metals in sediments of the Luan River source water

Contact Info

Product

Resources

About