NDLI: Hydrogeochemistry and quality of surface water and groundwater in the vicinity of Lake Monoun, West Cameroon: approach from multivariate statistical analysis and stable isotopic characterization

Content Provider	Springer Nature Link
Author	Kamtchueng, Brice T. Fantong, Wilson Y. Wirmvem, Mengnjo J. Tiodjio, Rosine E. Takounjou, Alain F. Ndam Ngoupayou, Jules R. Kusakabe, Miru Zhang, Jing Ohba, Takeshi Tanyileke, Gregory Hell, Joseph V. Ueda, Akira
Copyright Year	2016
Abstract	With the use of conventional hydrogeochemical techniques, multivariate statistical analysis, and stable isotope approaches, this paper investigates for the first time surface water and groundwater from the surrounding areas of Lake Monoun (LM), West Cameroon. The results reveal that waters are generally slightly acidic to neutral. The relative abundance of major dissolved species are Ca2+ > Mg2+ > Na+ > K+ for cations and HCO3 − ≫ NO3 − > Cl− > SO4 2− for anions. The main water type is Ca-Mg-HCO3. Observed salinity is related to water-rock interaction, ion exchange process, and anthropogenic activities. Nitrate and chloride have been identified as the most common pollutants. These pollutants are attributed to the chlorination of wells and leaching from pit latrines and refuse dumps. The stable isotopic compositions in the investigated water sources suggest evidence of evaporation before recharge. Four major groups of waters were identified by salinity and NO3 concentrations using the Q-mode hierarchical cluster analysis (HCA). Consistent with the isotopic results, group 1 represents fresh unpolluted water occurring near the recharge zone in the general flow regime; groups 2 and 3 are mixed water whose composition is controlled by both weathering of rock-forming minerals and anthropogenic activities; group 4 represents water under high vulnerability of anthropogenic pollution. Moreover, the isotopic results and the HCA showed that the CO2-rich bottom water of LM belongs to an isolated hydrological system within the Foumbot plain. Except for some springs, groundwater water in the area is inappropriate for drinking and domestic purposes but good to excellent for irrigation.
Starting Page	1
Ending Page	24
Page Count	24
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	188
Issue Number	9
e-ISSN	15732959
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-08-17
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeochemistry Multivariate statistical analysis Stable isotopes Surface and groundwater Quality risk assessment Foumbot plain West Cameroon Monitoring/Environmental Analysis Environmental Management Ecotoxicology Atmospheric Protection/Air Quality Control/Air Pollution Ecology
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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