Abstract: In order to explore an effective speciation analytical method for soil heavy metals with wide adaptability， a comparison of four determination methods was carried out on yellow red soil among Tessier method, modified BCR method, Huangyanzhu BCR method and the proposed five\|state method. It wa shown that Huang yan\|zhu BCR method exhibited the least analytical error on heavy metals total content， followed by five\|state method. For heavy metal form analysis， modified BCR method was more effective for the determination of acid extractable and oxidizable state heavy metal， while Tessier method was more effective in the determination of reduced state heavy metals. The proposed five\|state method would yield higher value for residual state heavy metal determination， but it exhibited better analytical effect on acid extractable heavy metals， oxidizable state heavy metal and residual state heavy metal than Tessier method. It is suggested that research aim and sample information should be well considered when selecting appropriate analytical method.

Key words: heavy metal, determination method, speciation analysis