Investigation of arsenic contamination in groundwater using hydride generation atomic absorption spectrometry

The validated hydride generation atomic absorption spectrometry (HG-AAS) method has been used to investigate total arsenic in groundwater. Under optimal experimental conditions, the concentration of arsenic in groundwater can be analysed in the range of 0.5 to 50 µg/L, with a method detection limit...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2023-01, Vol.195 (1), p.84-84, Article 84
Main Authors: Le, Dinh Vu, Giang, Pham Thi Kim, Nguyen, Van Trong
Format: Article
Language:English
Subjects:
Absorption
Absorption spectroscopy
Arsenic
Atmospheric Protection/Air Quality Control/Air Pollution
Atomic absorption analysis
Atomic absorption spectroscopy
Contamination
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental protection
Environmental science
Groundwater
Groundwater data
Groundwater pollution
Hydrides
Hydrologic data
Mercury
Methods
Monitoring/Environmental Analysis
Pollution
Pollution sources
Scientific imaging
Spectral analysis
Spectrometry
Surface water
Water analysis
Water pollution
Water resources
Water resources management
Water sampling
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Summary:The validated hydride generation atomic absorption spectrometry (HG-AAS) method has been used to investigate total arsenic in groundwater. Under optimal experimental conditions, the concentration of arsenic in groundwater can be analysed in the range of 0.5 to 50 µg/L, with a method detection limit of 0.15 µg/L. Its recovery in the field is from 96.3 to 99.8%, with high repeatability. The method was used to observe the total arsenic pollution in groundwater collected in Phu Tho Province, Vietnam. A total of 364 groundwater samples were analysed. The results showed that arsenic pollution was significant, with 15.93% of the samples higher than the maximum permissible level of arsenic. About 20.69% of the contaminated samples had a total arsenic ten times higher (100 µg/L) than the maximum permissible level of arsenic. The pollution source was also considered by comparing the arsenic level in the groundwater with arsenic in the surface water in the same areas. Thus, the use of the high-accuracy and sensitive method, HG-AAS, supplies valuable data on groundwater pollution for water resources management and environmental protection.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-022-10707-3