干旱区生态环境知识资源中心(Arid): The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India

Arid

DOI	10.1039/c9ra10332e
	The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India
	Karunanidhi, D.1; Aravinthasamy, P.1; Deepali, M.2; Subramani, T.3; Roy, Priyadarsi D.4
通讯作者	Karunanidhi, D.
来源期刊	RSC ADVANCES
EISSN	2046-2069
出版年	2020
卷号	10 期号:8 页码:4840-4859
英文摘要	This study attempts to establish the effects of subsurface geochemical processes based on the hydrogeochemical attributes of 61 well samples collected in a semi-arid region of South India. The study also provides the health risks associated with the consumption of fluoride-enriched groundwater by the rural people since groundwater is the major source of water supply in the Shanmuganadhi River basin. In this work, water-rock interaction diagrams, an entropy-weighted water quality index (EWQI), and health risk models as per the United States Environmental Protection Agency (USEPA) were prepared to understand the geochemical mechanism behind the groundwater chemistry and its role in impacting health. About 72% of these samples are of mixed Ca2+-Mg2+-Cl- water type, representing a transition from freshwater to brackish water, and 36% of them have fluoride above the permissible limit (>1.5 mg l(-1)). An evaluation of the hydrogeochemical attributes suggests that silicate weathering, carbonate dissolution and reverse ion exchange mostly control the hydrochemistry of the groundwater. The EWQI characterizes about 30% of these samples as unsuitable for drinking and another 49% as of moderate quality. Human health risks were evaluated by dividing the population into seven different age groups and estimating the hazard quotient (HQ) and total hazard index (THI) from intake and dermal contact with fluoride-rich groundwater. The groundwater of this region poses a higher risk for the younger population compared to the adults. About 79% of these groundwater samples pose a health risk to 5-12 month-old infants and only 36% of the samples could be potentially hazardous for adults >23 years old. Our results suggest that the ADD(dermal) pathway indicates less risk compared to the ADD(intake) estimations.
类型	Article
语种	英语
国家	India ; Mexico
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000516549000065
WOS关键词	WATER-QUALITY INDEX ; DRINKING-WATER ; TAMIL-NADU ; NATURAL-WATERS ; SALEM DISTRICT ; NORTHWEST ; CONTAMINATION ; EXPOSURE ; AREA ; CITY
WOS类目	Chemistry, Multidisciplinary
WOS研究方向	Chemistry
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315467
作者单位	1.Sri Shakthi Inst Engn & Technol Autonomous, Dept Civil Engn, Coimbatore 641062, Tamil Nadu, India; 2.Priyadarshini Inst Engn & Technol, Dept Appl Chem, Nagpur 440019, Maharashtra, India; 3.Anna Univ, Dept Geol, CEG Campus, Chennai 600025, Tamil Nadu, India; 4.Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ,CP 04510, Mexico City, DF, Mexico
推荐引用方式 GB/T 7714	Karunanidhi, D.,Aravinthasamy, P.,Deepali, M.,et al. The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India[J]. Universidad Nacional Autónoma de México,2020,10(8):4840-4859.
APA	Karunanidhi, D.,Aravinthasamy, P.,Deepali, M.,Subramani, T.,&Roy, Priyadarsi D..(2020).The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India.RSC ADVANCES,10(8),4840-4859.
MLA	Karunanidhi, D.,et al."The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India".RSC ADVANCES 10.8(2020):4840-4859.