Details

Autor(en) / Beteiligte

• Sheng, Ju-jiang
• Fan, De-jiang
• Yang, Dong-fang
• Qi, Hong-yan
• Xu, Lin

Titel

Distribution patterns of heavy metals in surface sediments of the Yangtze estuary and its adjacent areas and environmental quality assessment

Ist Teil von

• Huanjing kexue, 2008-09, Vol.29 (9), p.2405

Ort / Verlag

China

Erscheinungsjahr

2008

Quelle

MEDLINE

Beschreibungen/Notizen

• The concentrations of six heavy metals were determined in the fine fraction ( < 63 microm) of surface sediments in the Yangtze Estuary and its adjacent areas by an inductively coupled plasma mass spectroscopy (ICP-MS). The average contents of As, Cd, Cu, Pb, Cr and Zn are 10.47, 0.19, 37.68, 36.86, 97.80 and 98.65 mg x kg(-1), respectively. The contents of As, Cd and Cu appear gradually degressive from west to east, while the contents of Pb, Cr and Zn appear no apparent difference. In generally, the concentrations of heavy metals are higher in the south sea areas than those in the north sea areas. Environmental assessment with single factor method suggests that As, Cu, Pb, Cr and Zn are moderately contaminated, while Cd is not polluted. The values of As,Cu and Cr are between effect range-low (ERL) and effect range-median (ERM), which indicate they occasionally bring adverse biological effect at most stations, and the values of Cd,Pb and Zn are below ERL mean they rarely bring adverse biological effect by sedi