Abstract: According to the status that the content of heavy metals in soil such as cadmium, chromium, lead, mercury, total arsenic, total copper, total zinc and total nickel, could not be determined simultaneously, we developed an accurate and efficient method for uniform detection of eight heavy metals in soil through optimizing the sample preparation, digestion methods and digestion conditions. This method could resolve uniform digestion and determination of eight heavy metal elements, and it was simple, rapid, accurate and less interference. The method was suitable for determination of a large number of soil samples, which could greatly improve the work efficiency．

Key words: soil, heavy metal, microwave digestion, uniform digestion