Occurrence of pesticides in Tengi river and pesticides removal efficiency in Sungai Sireh drinking water treatment plant and the health risk to consumers

Elfikrie, Nurulizani (2017) Occurrence of pesticides in Tengi river and pesticides removal efficiency in Sungai Sireh drinking water treatment plant and the health risk to consumers. [Project Paper] (Submitted)

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Abstract

Introduction: Tanjung Karang is the third largest paddy fanning area in Malaysia. The population in Tanjung Karang were exposed to pesticide contaminated drinking water via daily ingestion of treated water from Sungai Sireh drinking water treatment plant. This may cause adverse health effects to the water consumer. Objective: To determine the occun-ence pesticides in T engi River and pesticides removal efficiency in Sungai Sireh drinking treatment plant and the health risk to consumers. Methodology: The study was conducted in Tanjung Karang. 10 water samples from Tengi River and 6 water samples from Sungai Sireh drinking water treatment plant were collected. The in-situ water quality parameters such as temperature, pH, electrical conductivity (EC), dissolved oxygen (DO) and turbidity were measured. Before injected to the Ultra-High Performance Liquid Chromatography Tandem Mass Spectrometry (UHPLC-MS/MS), the water samples were extracted using solid phase extraction (SPE). 510 respondents were interviewed using questionnaires to obtain information for non-carcinogenic and carcinogenic health risk assessments. Results and Discussion: Propiconazole showed the highest mean concentration (4493.1 ng/L) and pymetrozine showed the lowest mean concentration ( 1.3 ng/L) in Tengi River. The pesticides removal efficiency in Sungai Sireh drinking water trcatn1ent plant was 77% (imidacloprid), 90% (tebuconazole) and 86% (tritloxystrc.ryjn and buprofezin), respectively. The Hazard Quotient (HQ) for all selected pe:;•icides were less than 1. Conclusion: Pesticides was detected in the Tengi River and Sungai Sireh drinking water treatment plant. Removal of efficiency of pesticides in Sungai Sireh drinking water treatment plant need to be improved as some of the pesticides were not completely removed. HI and HQ indicates the respondents were unlikely to be affected by adverse non-cancer effect for consuming the treated water from the Sungai Sireh drinking water treatment plant. Keywords: Pesticides, river water, agriculture, in-situ water quality parameters, health risk assessments

Item Type:	Project Paper
Faculty:	Faculty of Medicine and Health Science
Depositing User:	Ms Norafizah Radzuan
Date Deposited:	11 Jul 2024 03:34
Last Modified:	11 Jul 2024 03:34
URI:	http://psaspb.upm.edu.my/id/eprint/1952

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