Correction to: Geochemical contamination in the Densu Estuary, Gulf of Guinea, Ghana
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CORRECTION
Correction to: Geochemical contamination in the Densu Estuary, Gulf of Guinea, Ghana Lailah Gifty Akita 1
&
Jürgen Laudien 3 & Elvis Nyarko 1,2
# Springer-Verlag GmbH Germany, part of Springer Nature 2020
Correction to: Environmental Science and Pollution Research https://doi.org/10.1007/s11356-020-10035-4 The correct equations are presented below:
The pollution load index (PLI) is determined by the formula (Tomlinson et al. 1980): PLI ¼ n√ðCF1 CF2 CF3 …:: CFn Þ: Where,
The enrichment factor is calculated using the formula (Ergin et al. 1991): EF ¼ ðX=FeÞsediment =ðX=FeÞBackground reference
CF CF
Where X/Fe is the ratio of the concentrations of metal X (element) to Fe (normalized metal or element). Contamination factor (CF) is a ratio of the concentration of a metal in sediment to natural abundance (pre-industrial reference value for the same metal):
Cmetal = Cbackground reference = PLI =
CF ¼ Cmetal =C background
= =
Cmetal/Cbackground reference contamination factor, n = number of metals metal concentration in the sediments background value of each metal Pollution Load Index
reference
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The online version of the original article can be found at https://doi.org/ 10.1007/s11356-020-10035-4 * Lailah Gifty Akita [email protected] 1
Department of Marine and Fisheries Sciences, University of Ghana, P. O. Box LG 99, Legon, Accra, Ghana
2
Regional Maritime University, P. O. Box GP 1115, Accra, Ghana
3
Alfred Wegner Institute Helmholtz Centre of Polar and Marine Research, Am Alten Hafen 26, 27568 Bremerhaven, Germany
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