Sains Malaysiana 42(11)(2013): 1581–1584

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

Received: 3 January 2012/Accepted: 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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*Corresponding author; email: ismail@ukm.my