期刊名称：Pertanika Journal of Social Sciences & Humanities
印刷版ISSN：0128-7702
电子版ISSN：2231-8534
出版年度：1985
卷号：8
期号：3
出版社：Universiti Putra Malaysia
摘要：This study was conducted to determine the distribution of the chemical forms of Cu, Zn, Ni and Co in the soil and sediment samples obtained from Lohan area in Ranau, Sabah. The samples were sequentially extracted with 0.5 M KNO3 to remove soluble plus exchangeable metals, with 0.5 M NaOH to remove organically bound metals, 0.05 M Na2 EDTA to dissolve metals in oxide or carbonate form, and with 4 M HNO3 at 80°C to dissolve metals in sulphide minerals. Most of the metals analysed were present as sulphide minerals with the exchangeable plus soluble fractions being very low.
关键词：Chemical forms; sequential extraction; soil; sediment available
