Determination of residual contents of pesticides in rice (Oryza sativa L.) crop from different regions of Pakistan
2008
Ahmad, S. (Bahauddin Zakariya Univ., Multan (Pakistan). Dept. of Agronomy) | Zia-ul-Haq, M. (Karachi Univ. (Pakistan). Dept. of Pharmacognosy) | Imran, M. (Punjab Univ., Lahore (Pakistan). Inst. of Chemistry) | Iqbal, S. (Sargodha Univ. (Pakistan). Dept. of Chemistry) | Iqbal, J. | Ahmad, M.
The study was conducted to investigate the pesticide residues in unhusked and husked rice (Oryza sativa L.) on Basmati-385 and Irri-6 varieties in major rice growing areas of Punjab, Pakistan. The concentration of four pesticides was determined by gas chromatography with flame ionization detection (GC-FID). In all the 400 samples, four pesticides, i.e., Karate, Malathion, Novacran and Padan were found in concentrations ranging from 19 to 148 ppm. The mean levels of pesticides in all the samples were below or just crossed the threshold limiting values (TLV). So presently there is no serious health problem due to pesticide poisoning. The results present important information on the current contamination status of an important agricultural crop in Pakistan and highlight the need for immediate action to manage the use of some excessively applied and potentially persistent pesticides.
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