Open AccessDetermination of the toxicity characteristic for metals in soil: A comparison of the toxicity characteristic leaching procedure and total metal determination
Author(s) -
David Bass,
J.D. Taylor
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/102266
Subject(s) - toxicity characteristic leaching procedure , soil water , leaching (pedology) , metal , chemistry , environmental chemistry , extraction (chemistry) , soil test , heavy metals , environmental science , soil science , chromatography , organic chemistry
A comparison is made of the concentrations of metals extracted from soils using the Toxicity Characteristic Leaching Procedure (TCLP) and a total determination method. This information is of interest in two ways. First, it is hoped that a relationship might be established between the amount of each metal determined after extraction by the TCLP and the amount determined using a total determination method. And second, data are also presented which indicate the general extractability of various metals in soil samples using the TCLP. This study looks specifically at inorganic elements (Sb, As, Ba, Cd, Cu, Cr, Pb, Mg, Hg, Se, Ag, Sn, and Zn) in soils from a firing range. Results show that total determination methods for metals can not generally be used for heterogeneous samples, such as soil samples from a firing range. Some correlation between a total determination method and TCLP was observed when Ba and Cd were present in the samples at lower concentrations (less than 80 mg/kg for Ba and less than 25 mg/kg for Cd); however, additional data are necessary to verify this correlation