Geogenic Sources of Arsenic and Fluoride in Groundwater:Examples from the Zagros Basin, the Kurdistan Region of Iraq

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73621512" target="_blank" >RIV/61989592:15310/23:73621512 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2073-4441/15/11/1981" target="_blank" >https://www.mdpi.com/2073-4441/15/11/1981</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/w15111981" target="_blank" >10.3390/w15111981</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Geogenic Sources of Arsenic and Fluoride in Groundwater:Examples from the Zagros Basin, the Kurdistan Region of Iraq

Popis výsledku v původním jazyce

Groundwater is one of the crucial water resources for domestic, agriculture and other purposes in the Kurdistan Region of Iraq, which is counted as a semiarid region with seasonal precipitation in winter. The geogenic source of arsenic and fluoride in groundwaterhas been studied in the Kurdistan Region of Iraq, which is a part of the Zagros Basin, using the hydrogeochemical method. The analysis results showed that the concentrations of arsenic and fluoride range from 0.19 to 7.8 µg/L and from 0.01 to 2.1 mg/L, respectively. The hydrogeochemical characteristics of the groundwater in the studied area were connected to the fluoride F− and arsenic As concentrations for understanding their sources and behavior. The hydrogeochemical relations between F and Asindicate geogenic sources and relatively simple aquifer conditions. Some samples may indicate the presence of contamination sources in addition to geogenic sources. Considering the WHO guidelines, the concentrations of As in most of the samples do not exceed the WHO limit, but the F in some samples shows a higher concentration than the WHO limit, indicating a serious risk of fluorosis in some spots. Connecting the changes in F concentrations to depth and aquifer types, a higher F concentration is associated with an intergranular aquifer and decreases in a karst aquifer. The speciation of F− and As is controlled by pH and redox conditions. Adsorption, cation exchange, and the dissolution of carbonate minerals with the possible dissolution of fluorite are the most dominantgeochemical processes that control the concentrations of As and F− in groundwater. The principal sources of F− and As in the study area seem to be geogenic.

Název v anglickém jazyce

Geogenic Sources of Arsenic and Fluoride in Groundwater:Examples from the Zagros Basin, the Kurdistan Region of Iraq

Popis výsledku anglicky

Groundwater is one of the crucial water resources for domestic, agriculture and other purposes in the Kurdistan Region of Iraq, which is counted as a semiarid region with seasonal precipitation in winter. The geogenic source of arsenic and fluoride in groundwaterhas been studied in the Kurdistan Region of Iraq, which is a part of the Zagros Basin, using the hydrogeochemical method. The analysis results showed that the concentrations of arsenic and fluoride range from 0.19 to 7.8 µg/L and from 0.01 to 2.1 mg/L, respectively. The hydrogeochemical characteristics of the groundwater in the studied area were connected to the fluoride F− and arsenic As concentrations for understanding their sources and behavior. The hydrogeochemical relations between F and Asindicate geogenic sources and relatively simple aquifer conditions. Some samples may indicate the presence of contamination sources in addition to geogenic sources. Considering the WHO guidelines, the concentrations of As in most of the samples do not exceed the WHO limit, but the F in some samples shows a higher concentration than the WHO limit, indicating a serious risk of fluorosis in some spots. Connecting the changes in F concentrations to depth and aquifer types, a higher F concentration is associated with an intergranular aquifer and decreases in a karst aquifer. The speciation of F− and As is controlled by pH and redox conditions. Adsorption, cation exchange, and the dissolution of carbonate minerals with the possible dissolution of fluorite are the most dominantgeochemical processes that control the concentrations of As and F− in groundwater. The principal sources of F− and As in the study area seem to be geogenic.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Water

ISSN

2073-4441

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

"1981-1"-"1981-19"

Kód UT WoS článku

001006417600001

EID výsledku v databázi Scopus

2-s2.0-85161383458