Phytoavailability of arsenic cadmium lead and mercury in rice grains of paddy plants grown in Malaysia

Che Fauziah I., . and Khairun Naim M., . and Rosenani A. B., . (2015) Phytoavailability of arsenic cadmium lead and mercury in rice grains of paddy plants grown in Malaysia. In: SEA Regional Conference on SRI 2015: Innovating Shared Value, 25-28 May 2015, Alor Setar Kedah.

Agronomic practices in rice should follow best management practices (BMP) due to evidence of heavy metals accumulation in the grains either from agricultural inputs and/or soil. The practices such as application of fertilizer soil amendments pesticides and herbicides either under organic farming (OFS) or flooded conventional condition or system of rice intensification (SRI) have not been well investigated to reflect their impact in the rice grains. Among the trace elements that have become a concern in the rice grains are arsenic (As) cadmium (Cd) lead (Pb) and mercury (Hg). Recently high levels of arsenic (As) in rice grain are reported in several literatures. Variability in total As Cd Pb and Hg in rice was evaluated using 12 rice samples from paddy growing areas of Malaysia. The data set is compared with the Maximum Permitted Concentration (MPC) as stated in the Malaysian Food Act (1983) and Food Regulation (1985) for reference values. The results were also evaluated based on previous background studies on heavy metals accumulation in rice grown in Malaysian soils which are from <1 to 2.59 mg kg�¹ for As 0.004-0.04 mg kg�¹ for Cd 0.10-0.70 mg kg�¹ for Pb and 0.05-6 µg kg�¹ for Hg. Trace metals accumulation in rice grains samples are found to be in the range of 0.03 to 12.90 mg kg�¹ for As 0.011 to 0.612 mg kg�¹ for Cd 0.09 to 3.33 mg kg�¹ for Pb and < 1 to 253.7 µg kg�¹ for Hg

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Abstract

Agronomic practices in rice should follow best management practices (BMP) due to evidence of heavy metals accumulation in the grains either from agricultural inputs and/or soil. The practices such as application of fertilizer soil amendments pesticides and herbicides either under organic farming (OFS) or flooded conventional condition or system of rice intensification (SRI) have not been well investigated to reflect their impact in the rice grains. Among the trace elements that have become a concern in the rice grains are arsenic (As) cadmium (Cd) lead (Pb) and mercury (Hg). Recently high levels of arsenic (As) in rice grain are reported in several literatures. Variability in total As Cd Pb and Hg in rice was evaluated using 12 rice samples from paddy growing areas of Malaysia. The data set is compared with the Maximum Permitted Concentration (MPC) as stated in the Malaysian Food Act (1983) and Food Regulation (1985) for reference values. The results were also evaluated based on previous background studies on heavy metals accumulation in rice grown in Malaysian soils which are from <1 to 2.59 mg kg�¹ for As 0.004-0.04 mg kg�¹ for Cd 0.10-0.70 mg kg�¹ for Pb and 0.05-6 µg kg�¹ for Hg. Trace metals accumulation in rice grains samples are found to be in the range of 0.03 to 12.90 mg kg�¹ for As 0.011 to 0.612 mg kg�¹ for Cd 0.09 to 3.33 mg kg�¹ for Pb and < 1 to 253.7 µg kg�¹ for Hg

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Item Type:	Conference or Workshop Item (Paper)
AGROVOC Term:	Rice
AGROVOC Term:	Grain crops
AGROVOC Term:	Paddy
AGROVOC Term:	Bioaccumulation
AGROVOC Term:	Heavy metals
AGROVOC Term:	Organic farming
AGROVOC Term:	Flooded rice
AGROVOC Term:	Intensification
AGROVOC Term:	Arsenic compounds
AGROVOC Term:	Cadmium
Geographical Term:	MALAYSIA
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:52
URI:	http://webagris.upm.edu.my/id/eprint/7728

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