Health risk assesment of exposure to residual aluminium (ai) in drinking water of residents in Kamunting Perak

Ahmad, : Mohd Aizuddin (2012) Health risk assesment of exposure to residual aluminium (ai) in drinking water of residents in Kamunting Perak. [Project Paper] (Submitted)

Text fpsk4 2012 13-.pdf Download (37MB)

Abstract

Summary: Introduction: Al sulphate (Ah(S04)3) has been used as treatment of surface water for a long time all over the world and applied to form floc through the reaction of a coagulant with solids suspended in the water. However, residual Al is still in the water and it is one of the contributing factors to cause Alzheimer disease if consumed by humans. The main aim of this study was to determine health risk assessment of exposure to residual Al levels in drinking water in Kamunting, Perak. Methodology: This cross-sectional study was conducted in three residential areas in Kamunting Perak. A total of 100 respondents were selected to participate in this study. Two replicates of water samples were collected from each respondent house and were filled into 250ml HDPE bottles and the pH reading was immediately taken using a pH meter. The water samples were preserved using 69% nitric acid and analysed using a Graphite Furnace Atomic Absorption Spectrophotometer (GFAAS) in determining the aluminium levels in each water sample. Respondent's information such as body weight, water daily intake, socio-demographic background and status of water quality supply was also collected using questionnaires. The health risk was then calculated for each respondent. Results: Results showed that 79% of water samples exceeded the NSDWQ Al limit value of 0.2mg/1. The mean residual Al concentration was 0.345±0.123 mg/l and all respondents HI were below 1 and indicated safe level and risk was acceptable. Conclusion: There was significant difference ofresidual Al concentration between the three residential areas in Kamunting Perak. There was also significant relationship between residential areas residual Al concentration with distance from treatment plant and also significant relationship between pH and residual Al concentration. Risk was acceptable since there is no respondent with HI above 1. Key words: Aluminium sulphate, Kamunting, Health Risk Assessment, Drinking Water, Cross Sectional Study

Item Type:	Project Paper
Depositing User:	Ms Norafizah Radzuan
Date Deposited:	22 Nov 2022 06:36
Last Modified:	15 Feb 2023 01:47
URI:	http://psaspb.upm.edu.my/id/eprint/207

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