A CRITICAL STUDY OF THE USE OF HYDROGEN PEROXIDE TO DETERMINE TRACE METALS BOUND TO SOIL ORGANIC MATTER

摘要

The risk due to the presence of large amounts of trace metals in soils is related strongly to their speciation, which is usually estimated by sequential extraction procedures. However, this approach is now very controversial. As one of the soil compartments responsible for the trace metal fixation is the organic matter, the aim of this work was to study the reliability of the use of a chemical reagents such as hydrogen peroxide in determining the trace metal quantities bound to the soil organic matter.