J 2018

Mercury contamination of stream sediments in the North Bohemian Coal District (Czech Republic): Mercury speciation and the role of organic matter

VÖRÖŠ, Dominik, Mercedes DÍAZ-SOMOANO, Eva GERŠLOVÁ, Ivana SÝKOROVÁ, Isabel SUÁREZ-RUIZ et. al.

Basic information

Original name

Mercury contamination of stream sediments in the North Bohemian Coal District (Czech Republic): Mercury speciation and the role of organic matter

Authors

VÖRÖŠ, Dominik (203 Czech Republic, belonging to the institution), Mercedes DÍAZ-SOMOANO (724 Spain, guarantor), Eva GERŠLOVÁ (203 Czech Republic, belonging to the institution), Ivana SÝKOROVÁ (203 Czech Republic) and Isabel SUÁREZ-RUIZ (724 Spain)

Edition

Chemosphere, Elsevier Science, 2018, 0045-6535

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 5.108

RIV identification code

RIV/00216224:14310/18:00103512

Organization unit

Faculty of Science

UT WoS

000446149600072

Keywords in English

Mercury contamination; Stream sediments; Mercury speciation; Organic matter

Tags

International impact, Reviewed
Změněno: 2/5/2019 14:58, Mgr. Tereza Miškechová

Abstract

V originále

Industrial expansion in the North Bohemian Coal District over the past decades has had an adverse effect not only on stream sediments but also on the freshwater system. So far mercury occurrence has not been properly investigated in the area. In response to this situation, the present study applies mercury quantification and speciation in order to predict the possible mobility of mercury. The enrichment factor (EF) and sediment quality guidelines (SQGs) were used to calculate the degree of mercury contamination. An automatic mercury analyser was employed to detect the total mercury content (Hg-T) and Thermal Desorption technique was used to identify mercury species. All the sediment samples were assessed with the contamination degree which increased to very severe in stream sediments in the middle section of the river course. Mercury species identified were chiefly the insoluble forms Hg-FeS2 and HgS. Lignite components and combustion residues were identified as the primary source of Hg contamination in the area.