Assessment of physicochemical properties and radioactivity in groundwater at households living in bac Lieu province, vietnam.
Environ Geochem Health
; 46(10): 412, 2024 Sep 04.
Article
in En
| MEDLINE
| ID: mdl-39230594
ABSTRACT
This paper presents findings on groundwater physiochemical composition and radioactivity levels in households in Bac Lieu province, Vietnam. Through discriminant analysis, it was observed that groundwater quality exhibits spatial variations corresponding to saline intrusion zones. The paired-samples T-tests revealed significantly different ratios of Ra-224, Ra-226, and Ra-228 isotopes between Na-Cl and Ca-Na-HCO3 water types. All three water types had a ratio of Ra-226/Ra-228 of approximately one, indicating the presence of groundwater aquifers beneath the crust and fluvial marine sediment. Furthermore, strong associations between sulfate and calcium suggest that CO2 enrichment in groundwater aquifers indicates anoxic aquatic environments. Twenty-five of the thirty-three evaluated samples exceeded the national technical regulations for domestic water quality with parameters such as chloride, sulfate, sodium, gross alpha, or total dissolved solids. Fifteen samples exceeded gross alpha's allowable contamination threshold of 0.1 Bq/L. The combination of Ra-226 and Ra-228 did not surpass the U.S. Environmental Protection Agency's recommended limit of 0.185 Bq/L. However, nineteen samples exhibited annual committed effective doses of radium isotopes for infants that exceeded the WHO recommendation of 0.1 mSv/year.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Water Pollutants, Radioactive
/
Groundwater
/
Radium
Limits:
Humans
Country/Region as subject:
Asia
Language:
En
Journal:
Environ Geochem Health
/
Environ. geochem. health (Dordr., Online)
/
Environmental geochemistry and health (Dordrecht. Online)
Journal subject:
QUIMICA
/
SAUDE AMBIENTAL
Year:
2024
Document type:
Article
Affiliation country:
Vietnam
Country of publication:
Netherlands