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An Assessment of Multi Residue Organochlorine Pesticides Level in<br />

Surface Water from Lowland Paddy Field<br />

Siti Nuralizah Ganih<br />

Supervisor: Dr. Wan Mohd Afiq Wan Mohd Khalik<br />

Bachelor of Science (Analytical and Environmental Chemistry)<br />

School of Marine and Environmental Sciences<br />

Universiti Malaysia Terengganu<br />

The research work aims to investigate the occurrence of organochlorine pesticides<br />

present in the surface water of lowland paddy field was successfully conducted.<br />

Sampling activities were performed twice where 5 stations were selected as a sampling<br />

point, situated in Machang, Kelantan. Surface water was reported having an acidic<br />

characteristic, pH 4.88-6.74. An analysis of pesticides residue was carried out using<br />

commercial C18 solid phase extraction and final determination by gas chromatographyelectron<br />

capture detector. During the period of study, nine organochlorine pesticides<br />

residue were detected namely alpha-HCH, beta-HCH, gamma-HCH, delta-HCH, alphaendosulfan,<br />

beta-endosulfan, endosulfan sulfate, DDE, DDT, and DDT. The highest<br />

concentration detected was beta-HCH with the concentration level of 9.0872 x 10 -3<br />

ppm. Of nine compounds detected, risk analysis for human health indicates HCH group<br />

except delta HCH having hazard quotient > 1. Thus, it explicates that child having a<br />

high risk when water was introduced through ingestion route.<br />

1972 | UMT UNDERGRADUATE RESEARCH DAY 2018

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