TY - JOUR
T1 - Normalisation and heavy metal contamination in mangrove sediments
AU - Tam, N. F.Y.
AU - Yao, M. W.Y.
N1 - Funding Information:
The authors would like to thank Prof. Y.S. Wong and his staff, Research Centre, Hong Kong University of Science and Technology, for their advice and assistance in field sampling. This work was partially funded by the Research Committee of the City University of Hong Kong and the University Grant Committee.
PY - 1998/5/14
Y1 - 1998/5/14
N2 - The concentrations of Zn, Ni, Cr, Cu, Mn, Fe and Al in surface sediments collected from three mangrove sites in Hong Kong were determined following aqua regia digestion. The heavy metal concentrations were normalised to reference elements to facilitate comparison between mangrove sites. Iron was found to be a good normaliser for Mn (r= 0.892), Zn (r= 0.443) and Ni (r = 0.318) in 45 sediment samples from three mangrove sites. However, the correlation coefficients between Fe and Cu, and Fe and Cr were low. Total organic carbon and aluminum could be alternate normalisers for certain heavy metals such as Cu and Cr in mangrove sediments. Among three mangrove sites in Hong Kong, Sha Tau Kok was contaminated with Zn and Cu, elevated levels of Mn and Ni were recorded in Chek Keng and Sai Keng was enriched with Cr based on the ratios between metal and normaliser concentrations.
AB - The concentrations of Zn, Ni, Cr, Cu, Mn, Fe and Al in surface sediments collected from three mangrove sites in Hong Kong were determined following aqua regia digestion. The heavy metal concentrations were normalised to reference elements to facilitate comparison between mangrove sites. Iron was found to be a good normaliser for Mn (r= 0.892), Zn (r= 0.443) and Ni (r = 0.318) in 45 sediment samples from three mangrove sites. However, the correlation coefficients between Fe and Cu, and Fe and Cr were low. Total organic carbon and aluminum could be alternate normalisers for certain heavy metals such as Cu and Cr in mangrove sediments. Among three mangrove sites in Hong Kong, Sha Tau Kok was contaminated with Zn and Cu, elevated levels of Mn and Ni were recorded in Chek Keng and Sai Keng was enriched with Cr based on the ratios between metal and normaliser concentrations.
KW - Anthropogenic contamination
KW - Heavy metals
KW - Mangrove sediment
KW - Normalisation
UR - http://www.scopus.com/inward/record.url?scp=0032516393&partnerID=8YFLogxK
U2 - 10.1016/S0048-9697(98)00132-6
DO - 10.1016/S0048-9697(98)00132-6
M3 - Article
AN - SCOPUS:0032516393
SN - 0048-9697
VL - 216
SP - 33
EP - 39
JO - Science of the Total Environment
JF - Science of the Total Environment
IS - 1-2
ER -