Assessment of Anthropogenic Activities on Water Quality of Benin River

Journal of Applied Sciences and Environmental Management

OROGUN, E.E.¹  EZENWA, I.M.¹  WEMIMO, I.J.¹  AYOBAHAN, S.U.¹  URIRI, J.E.¹ 

关键词: Organic pollution;    Industrial effluent;    Water Quality Index (WQI);    Principal Component Analysis (PCA);   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

Assessment of water quality was conducted from June to December, 2011 infive stations along the stretch of the Benin River between Ajimele and Koko town in attemptto assess and determine the source of anthropogenic activities affecting the river. Twentyfourparameters have been monitored on 5 sampling stations on a monthly-day-trip. Interstation comparisons and locations of significant differences were carried out usingparametric ANOVA and Duncan multiple range tests. Principal Component Analysis (PCA)and Water Quality Index (WQI) were used to establish relationship among water qualityparameters and determine the water quality status. First six components of PCA accountedfor 90.96% of observed variations and showed similarity between the sampling stationsindicating different anthropogenic activities and pollution levels of sampled sites. Factorsidentified as responsible for variability in the sampling stations are organic pollution,industrial effluent, soil erosion, nutrient loading and human activities, especially in station 4and 5. WQI for sampling stations 1 and 3 was very poor for drinking (201 - 300) and stations2, 4 and 5 was unsuitable (> 301) for human consumptions. In the final analysis, thisinvestigation presents the usefulness of PCA and WQI in assessing complex datasets ofsurface water quality and as well as a call to action for the state and federal ministry ofenvironment to take this issue of water quality degradation in Benin River into consideration,by reducing organic pollution and effluent discharge into the river. An intense andcontinuous water quality monitoring is highly recommended.

【 授权许可】

Unknown