Jump to main content
Jump to site search


Development and characteristics of a new certified reference material for landfill cover soil analysis with extraction using dilute hydrochloric acid

Author affiliations

Abstract

A new environmental certified reference material (CRM) has been developed by the National Institute for Environmental Studies (NIES) to support research and development studies on trace heavy metals in landfill cover soils. The method of analysis requires the use of a 1 mol per L HCl solution to extract the metals of interest, the procedure being based on an official test method (Notification Method No. 19) of the Ministry of the Environment, Japan. Certified values for element concentrations have been issued for Al, Cd, Cr, Co, Cu, Pb, Mn, Ni, V and Zn, while reference values have been assigned to As, Fe and Hg. The efficiency of extraction for elements of interest was investigated using standard solutions of HCl (0.01, 0.1, 0.5, and 1 mol L−1) and ultrapure water (UPW) and wide variation in extraction efficiency was noted reflecting the importance of chemical speciation in the context of liberation of analytes from the host matrix. The extractability of Cd, Cu, Mn, and Pb was relatively high (over 50% relative to the total metal content) for acid strengths in the range 0.1 to 1.0 mol L−1, in contrast to that of Hg where the extraction efficiency was less than 5% even in 0.5 mol L−1. On the basis of submitted data, the CRM is considered appropriate for use in analytical quality control for element speciation and trace analysis as well as for evaluation of new or modified extraction procedures based on the official test method.

Graphical abstract: Development and characteristics of a new certified reference material for landfill cover soil analysis with extraction using dilute hydrochloric acid

Back to tab navigation

Supplementary files

Article information


Submitted
28 Jan 2020
Accepted
29 Feb 2020
First published
26 Mar 2020

Anal. Methods, 2020, Advance Article
Article type
Paper

Development and characteristics of a new certified reference material for landfill cover soil analysis with extraction using dilute hydrochloric acid

M. Nishikawa, T. Sano, K. Nagano, M. Ukachi, K. Onishi, A. Yamakawa, A. Takeuchi, M. Hirano and I. Mori, Anal. Methods, 2020, Advance Article , DOI: 10.1039/D0AY00174K

Social activity

Search articles by author

Spotlight

Advertisements