TY - JOUR
T1 - Release of cadmium, copper, and lead from urban soils of Copenhagen
AU - Li, Lijun
AU - Holm, Peter Engelund
AU - Marcussen, Helle
AU - Hansen, Hans Chr. Bruun
N1 - Funding Information:
We are grateful for the support provided by the Chinese Academy of Research . We want to thank Kristina E. Budtz and Simon Toft Ingvertsen, Faculty of Science, University of Copenhagen for valuable help and technical guidance. This work was supported by Shanxi Natural Science Foundation Committee of China (Grant No. 2012011046-5 ).
PY - 2014/4
Y1 - 2014/4
N2 - We studied the bonding and release kinetics of Cd, Cu and Pb from different soils in the older metropolitan area of Copenhagen. Total Cd, Cu and Pb concentrations were elevated 5-27 times in the urban soils compared to an agricultural reference soil, with Cd and Pb in mainly mobilisable pools and Cu in strongly bound pools. The soils were subjected to accelerated leaching studies in Ca(NO
3)
2 or HNO
3 solutions resulting in release up to 78, 18 and 15% of total Cd, Cu and Pb soil concentrations over a period of 15 weeks. The relative initial Cd and Pb release rates increased 10 fold when pH decreased 2 and 3 units, respectively, while increases in Cu release rates were only seen at pH below 4. The total leachable Cu and Pb pools were higher in urban soils compared the agricultural reference soil but not for Cd.
AB - We studied the bonding and release kinetics of Cd, Cu and Pb from different soils in the older metropolitan area of Copenhagen. Total Cd, Cu and Pb concentrations were elevated 5-27 times in the urban soils compared to an agricultural reference soil, with Cd and Pb in mainly mobilisable pools and Cu in strongly bound pools. The soils were subjected to accelerated leaching studies in Ca(NO
3)
2 or HNO
3 solutions resulting in release up to 78, 18 and 15% of total Cd, Cu and Pb soil concentrations over a period of 15 weeks. The relative initial Cd and Pb release rates increased 10 fold when pH decreased 2 and 3 units, respectively, while increases in Cu release rates were only seen at pH below 4. The total leachable Cu and Pb pools were higher in urban soils compared the agricultural reference soil but not for Cd.
KW - Heavy metal extraction
KW - Leaching
KW - Release rates
KW - Urban soil
U2 - 10.1016/j.envpol.2013.12.016
DO - 10.1016/j.envpol.2013.12.016
M3 - Journal article
SN - 0269-7491
VL - 187
SP - 90
EP - 97
JO - Environmental Pollution
JF - Environmental Pollution
ER -