Journal
ANALUSIS
Volume 28, Issue 9, Pages 808-812Publisher
E D P SCIENCES
DOI: 10.1051/analusis:2000147
Keywords
As; Cd; Zn; soil; extraction; aqua regia; nitric acid; acetic acid; DTPA
Categories
Ask authors/readers for more resources
Various soil extraction methods were developed for the determination of total and/or plant-available concentrations of potentially toxic elements. In this experiment, four single extraction procedures (aqua regia, HNO3, acetic acid, DTPA) were tested for the determination of extractable contents of As, Cd and Zn. 35 soils differing in their physicochemical properties and in total element contents were used in this experiment. Extractability of elements from soil samples varied following the individual elements and/or extraction agents used. The strong acids were not able to release the elements tightly bound into the silicate sample matrix. However, such techniques remain utilizable for the approximate determination of pseudototal element contents in soil, especially if soil samples are affected by anthropogenic contamination. The concentrations of As, Cd, and Zn determined in soil extracts by both mineral and organic acids covered in most cases the element portion representing more than one soil element fraction determined using SM&T sequential extraction procedure. Solutions of acetic acid and DTPA were able to release a part of the element fraction bound in Fe/Mn oxides and organic matter of soil sample. Arsenic represents an exception because it is not released by DTPA.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available