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EDC
Monitoring in Malaysia: A Report on Pesticide and Bisphenols Residues
in Water from the Selangor River
Mustafa Ali Mohd*, Benjamin Tan Lee Leng1, Melissa Chan Pui Ling*,
Abdul Rani Abdullah** and Siti Norazah Zulkifli***, *Department of
Pharmacology, Faculty of Medicine, **Department of Chemistry, ***Health
Research and Development Unit, University of Malaya, Kuala Lumpur,
Malaysia
Selangor River is made up of many smaller streams and river that converge
to make up a bigger river. Selangor River was chosen as a water sampling
area for the UNU hydrosphere project for many reasons. Firstly, it
is a main source of water supply to many agricultural activities such
as vegetable farms, oil palm and rubber plantation. Furthermore it
is also used to support aquaculture activities such as the cultivation
of fresh water fishes for human consumption. Industries such as paper
manufacturing, rubber and oil palm manufacturing and many others are
also located near the Selangor River. Selangor River is also a source
of water for most of the residents living along and will soon be a
major source of water to part of Kuala Lumpur city. Nine sites were
chosen as sampling stations along the river for reasons of agricultural
and industrial area as well ease of sampling.
Monthly sampling for 11 alkylphenol is done from the months of April
2000 to December 2000. The alkylphenol that were monitored at the
river are 4-t-butylphenol, 2,4-dichlorophenol, 4-n-butylphenol, 4-n-pentylphenol,
4-n-hexylphenol, 4-t-octylphenol, 4-n-octylphenol, 4-n-heptylphenol,
nonylphenol, 4-n-octylphenol, pentachlorophenol and bisphenol A. From
the data of the alkylphenol found in the Selangor River it shows that
each month has a different amount of alkylphenol found and each site
differs from the next. Not all of the 11 alkylphenol were detected
at the Selangor River. There is also a trend of alkylphenol that seems
to get lesser from April 2000 to December 2000, with November 2000
and December 2000 to be the months with the lowest alkylphenol found
in the Selangor River.
Monthly sampling for 13 pesticides is done concurrently from the months
of April 2000 to December 2000. The pesticides that were monitored
are lindane, aldrin, diazinon, heptaclor, chlorpyrifos, o',p'-DDE,
endosulfan, dieldrin, p,p'-DDE, eldrin, endosulfan sulfate and p,p'-DDT.
Not all of the 13 pesticides were detected in the Selangor River.
There is also a trend of pesticide that seems to get lesser from April
2000 to December 2000, with November 2000 and December 2000 to be
void of pesticide.
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