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Comparison of the Level of Organochlorine Residues in Paddy Crops from Two Different Cultivation Practices (Perbandingan Aras Sisa Organoklorin dalam Tanaman Padi daripada Dua Penanaman Berbeza)
AWIS SUKARNI
MOHMAD
SABERE1, ZURIATI
ZAKARIA1& B.S. ISMAIL2* 1School of Chemical Sciences and Food Technology,
Faculty of Science and Technology Universiti Kebangsaan Malaysia,
43600 Bangi, Selangor, Malaysia 2School of Environmental and Natural Resource
Sciences, Faculty of Science and Technology Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Diserahkan: 3 Januari 2012/Diterima: 12 April 2013
ABSTRACT
This study was conducted to investigate pesticide residues in
paddy crops derived from two different types of cultivation, namely the
cultural plot managed by the Malaysian Agriculture Research and Development
Institute (MARDI) and the second from the farmers’ rice fields which
did not follow schedules suggested by MARDI. Sample collection was
carried out at post harvest. To determine the concentration of organochlorine
pesticides, a gas chromatograph equipped with an electron capture detector (GC-ECD)
was used. The range of pesticide residues in the leaf samples was from N/D to
579.60 ppb, in stem samples from N/D to 368.93 ppb and in the
rice grain from N/D to 22.37 ppb. Some of the rice
samples had levels that exceeded the standard MRL (as
stipulated by WHO).
Keywords: Paddy crop; pesticide residue; organochlorine
ABSTRAK
Penyelidikan ini dijalankan untuk mengkaji sisa racun perosak dalam
tanaman padi yang berasal daripada dua jenis tanaman, iaitu amalan
kultur petak yang diurus oleh Institut Penyelidikan dan Kemajuan
Pertanian Malaysia (MARDI) sementara yang kedua diusahakan oleh petani yang
tidak mengikuti jadual yang disediakan oleh MARDI.
Kutipan sampel telah dijalankan selepas menuai.
Untuk menentukan kepekatan racun perosak organoklorin, kromatograf
gas yang dilengkapi dengan pengesan tangkapan elektron (GC-ECD)
telah digunakan. Pelbagai sisa racun perosak dalam sampel daun diperoleh
dari N/D
579,60 ppb, sampel stem N/D 368,93 ppb dan beras dari N/D
22,37 ppb. Beberapa sampel beras
mempunyai tahap yang melebihi piawai MRL (seperti yang ditetapkan oleh WHO).
Kata kunci: Organoklorin; sisa racun perosak;
tanaman padi
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*Pengarang untuk surat-menyurat; email: ismail@ukm.my
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