Back to Search Start Over

Establishment of regional background for heavy metals in the soils of the Lower Don and the Taganrog Bay coast

Authors :
Konstantinova Elizaveta
Minkina Tatiana
Nevidomskaya Dina
Bauer Tatiana
Fedorov Yuri
Zamulina Inna
Mandzhieva Saglara
Kravtsova Natalia
Voloshina Marina
Dudnikova Tamara
Shcherbakov Aleksey
Source :
E3S Web of Conferences, Vol 265, p 03004 (2021)
Publication Year :
2021
Publisher :
EDP Sciences, 2021.

Abstract

Data on the regional geochemical background and threshold values of heavy metals are required to establish anomalies and assess soil pollution. As a rule, the background values are the average contents of elements in natural undisturbed soils, or the threshold values for the study area, obtained by statistical methods. The aim of the study is to obtain geochemical threshold values of heavy metals in the soils of the Lower Don and the Taganrog Bay coast using different statistical approaches. A total of 86 topsoil samples were collected from the study area. The concentrations of Cr, Mn, Ni, Сu, Zn, As, Cd, and Pb were analyzed by X-ray fluorescence. The median element concentrations in the soils of the study area were consistent with world soil average and metal concentrations in background soils of protected area. Using a ‘geochemical’ approach is not suitable for this dataset because it does not take into account the natural variability of concentrations in different soil types. The Tukey inner fence method delivers estimates that do not detect outliers for Ni, As, Cd, and Pb. The ‘median + 2 median absolute deviations’ method was the most appropriate, as it consistently provided the most conservative background values.

Subjects

Subjects :
Environmental sciences
GE1-350

Details

Language :
English, French
ISSN :
22671242
Volume :
265
Database :
Directory of Open Access Journals
Journal :
E3S Web of Conferences
Publication Type :
Academic Journal
Accession number :
edsdoj.7614c1f2b4a8a9a05ede226eefc33
Document Type :
article
Full Text :
https://doi.org/10.1051/e3sconf/202126503004