TY - JOUR
T1 - Heavy metal contamination in surface sediments of Yangtze River intertidal zone
T2 - An assessment from different indexes
AU - Zhang, Weiguo
AU - Feng, Huan
AU - Chang, Jinna
AU - Qu, Jianguo
AU - Xie, Hongxia
AU - Yu, Lizhong
PY - 2009/5
Y1 - 2009/5
N2 - Surface sediments (0-5 cm) from 59 stations within the Yangtze River intertidal zone (YRIZ) were sampled for metal contamination analysis in April and August 2005. The concentrations ranged (in mg kg-1 dry weight): Al, 40,803-97,213; Fe, 20,538-49,627; Cd, 0.12-0.75; Cr, 36.9-173; Cu, 6.87-49.7; Mn, 413-1,112; Ni, 17.6-48.0; Pb, 18.3-44.1; and Zn, 47.6-154; respectively. Among the 59 sampling stations, enrichment factors (EF) indicate enrichment of Cd (52 stations), Cr (54 stations), Cu (5 stations), Ni (26 stations), Pb (5 stations) and Zn (5 stations). Geoaccumulation indexes (Igeo) also suggest individual metal contamination in localized areas. This study indicates that Cd, Cr and Ni enrichment in the YRIZ sediment is widespread whereas Cu, Mn, Pb and Zn enrichment is localized or nonexistent. Factor and cluster analyses indicate that Cd is associated with total organic carbon whereas Cu, Cr, Ni, Pb and Zn have a close association with Mn.
AB - Surface sediments (0-5 cm) from 59 stations within the Yangtze River intertidal zone (YRIZ) were sampled for metal contamination analysis in April and August 2005. The concentrations ranged (in mg kg-1 dry weight): Al, 40,803-97,213; Fe, 20,538-49,627; Cd, 0.12-0.75; Cr, 36.9-173; Cu, 6.87-49.7; Mn, 413-1,112; Ni, 17.6-48.0; Pb, 18.3-44.1; and Zn, 47.6-154; respectively. Among the 59 sampling stations, enrichment factors (EF) indicate enrichment of Cd (52 stations), Cr (54 stations), Cu (5 stations), Ni (26 stations), Pb (5 stations) and Zn (5 stations). Geoaccumulation indexes (Igeo) also suggest individual metal contamination in localized areas. This study indicates that Cd, Cr and Ni enrichment in the YRIZ sediment is widespread whereas Cu, Mn, Pb and Zn enrichment is localized or nonexistent. Factor and cluster analyses indicate that Cd is associated with total organic carbon whereas Cu, Cr, Ni, Pb and Zn have a close association with Mn.
KW - Contamination
KW - Heavy metals
KW - Intertidal zone sediments
KW - Sediment quality criteria
KW - Yangtze River estuary
UR - https://www.scopus.com/pages/publications/63249124702
U2 - 10.1016/j.envpol.2009.01.007
DO - 10.1016/j.envpol.2009.01.007
M3 - 文章
C2 - 19217701
AN - SCOPUS:63249124702
SN - 0269-7491
VL - 157
SP - 1533
EP - 1543
JO - Environmental Pollution
JF - Environmental Pollution
IS - 5
ER -