6[2]Hermann D J. Considerations for using wastewater sludge as an agricultural and silvicultural soil amendment[ A]. C.A.Rock and J.A. Alexander, Proceeding of the symposium on Long Rage Disposal Alternatiues for Pulp and Paper sluclge[ C]. University of Maine,Orono,1983, (3) :79.
7[5]Calvet R. Some experiments on extraction of heavy metals present in soil [ J ]. Intern J Environmental Anal Chem,1990,39:31 -45.
8[6]H M赖森奥尔.土壤分析法[M].北京:中国农业科技出版社,1991,234-240.
9[8]NY/T297-1995,果实中重金属最低含量安全标准[S].
10Macchi G.A bench study on chromium recovery from tannery sludge[J].Water Research,1991,25 (8):1 019-1 026.