Elemental concentration based potential ecological risk (PER) status of the surface sediments, Pulicat lagoon, Southeast coast of India

Saravanan, P.; Krishnakumar, S.; Pradhap, D.; Silva, Judith D.; Arumugam, K.; Magesh, N.S.; Srinivasalu, S.

doi:10.1016/j.marpolbul.2018.05.025

Cited by 6 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equation (2) was used to calculate the total risk index ( RI ) of a sampling site, as follows:RI=true∑i=1nEi where C i is the concentration of metal i in soil, C 0 is the background concentration, T i is the biological toxicity factor of an individual element ( T i values are as follows: Cu = Pb = Ni = 5, Zn = 1, Cr = 2, and Cd = 30 [8,35,36], E i is the potential ecological risk factor of metal i , and RI is the total potential ecological risk index of metals i–n . The PERI of heavy metals was categorized according to five levels, as shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Heavy Metals in Agricultural Soils of the Lihe River Watershed, East China: Spatial Distribution, Ecological Risk, and Pollution Source

Chen

Wang

et al. 2019

IJERPH

View full text Add to dashboard Cite

Concentrations of cadmium, chromium, copper, nickel, lead, and zinc in agricultural soils at 32 sites in the Lihe River Watershed of the Taihu region, East China, and their potential ecological risks and possible sources were investigated. Enrichment factor analysis demonstrated enrichment in the order Cd > Pb > Zn > Cu > Ni > Cr. The potential ecological risk index and risk assessment code analyses indicated that, of the metals studied, Cd posed the most significant ecological risk in the study area. Statistical analyses, GIS mapping, and enrichment factor analysis suggested that Cd, Pb, Cu, and Zn were derived mainly from anthropogenic sources, including agricultural, industrial, and vehicular emissions, while Cr and Ni were mainly from natural sources. Positive matrix factorization revealed that Cd, Cr, Cu, Ni, Pb, and Zn were sourced from industrial and vehicular emissions (73.7%, 21.3%, 71.4%, 20.3%, 75.0%, and 62.2%, respectively), the agricultural sector (26.3%, 36.3%, 6.8%, 38.9%, 15.7%, and 6.9%, respectively), and parent materials (0%, 42.4%, 21.8%, 40.8%, 9.2%, and 30.9%, respectively). It was recommended that strategies be implemented to reduce industrial point-source pollution.

show abstract