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HERO ID
2278458
Reference Type
Journal Article
Title
Arsenic concentration variability, health risk assessment, and source identification using multivariate analysis in selected villages of public water system, Lahore, Pakistan
Author(s)
Sultana, J; Farooqi, A; Ali, U
Year
2014
Is Peer Reviewed?
Yes
Journal
Environmental Monitoring and Assessment
ISSN:
0167-6369
EISSN:
1573-2959
Volume
186
Issue
2
Page Numbers
1241-1251
Language
English
PMID
24197557
DOI
10.1007/s10661-013-3453-3
Web of Science Id
WOS:000329647300048
Abstract
This paper reports high levels and variability in arsenic (As) levels at locations identified as one of the highest As-contaminated locations in Pakistan. Groundwater pollution related to arsenic has been reported since many years in the areas lying in outskirts of District Lahore, Pakistan. A comparative study is done to determine temporal variations of As from three villages, i.e., Kalalanwala (KLW), Manga Mandi (MM), and Shamki Bhattian (SKB). Seventy-three percent of the 30 investigated samples ranging in depth from 20 to 200 m, show an increasing trend in variations of As concentration over a time span of 4 years and 87% of samples exceeded the WHO standard of 10 μg/L for As while 77% of samples have As concentration >50 μg/L (national standard). Further results indicate that high levels of As is accompanied with increase pH (r = 0.8) favoring desorption of As from minerals at higher pH under oxidizing conditions. For health risk assessment of arsenic, the average daily dose, hazard quotient (HQ), and cancer risk were calculated. The residents of the studied areas had toxic risk index in the order of SKB>KLW>MM, with 87% of samples exceeding the typical toxic risk index 1.00 (ranging from 2.3-48.6) which was 83% (ranging from 0.3-41) 4 years before. The results of the present study therefore indicate that arsenic concentrations are increasing in the area, which needs an immediate attention to provide alternate sources of water to save people at risk.
Keywords
Arsenic; Groundwater; Arsenic variability; Health risk; Correlation; Multivariate analysis
Tags
•
Arsenic Hazard ID
PubMed
WOS
Considered New
WOS
ToxNet
Excluded
WOS Duplicates
WOS
ToxNet
Excluded
Toxnet Duplicates
WOS Duplicates
2. Lit Search Updates through Oct 2015
PubMed
WOS
ToxNet
Considered
7. Other Studies through Oct 2015
Exposure Assessment
Water - Sources and Exposure
•
Arsenic (Inorganic)
1. Literature
Lit search updates through Oct 2015
3. Hazard ID Screening
Other potentially supporting studies
5. Susceptibility Screening
Excluded/Not relevant
•
Arsenic Susceptibility
1. Susceptibility Literature Screening
Keyword Search
2. Excluded
Not Relevant
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