Atomic Absorption Spectrophotometric Analysis of Heavy Metals in Unpolished Rice Grains

원자흡광법(原子吸光法)에 의(依)한 현미중(玄米中)의 중금속(重金屬) 함량분석(含量分析)에 관(關)한 연구(硏究)

  • Park, Seung Heui (Dept. of Agricultural Chemistry, Coll. of Agriculture, Chungnam Natl. Univ.)
  • Published : 1981.06.30

Abstract

Rice grains harvested from paddy fields around industrial areas of Kyongin, Iri, and Jeonju were taken and analysed the contents of heavy metals which were considered to be accumulated in those rice grains. Atomic absorption spectrophotometer was applied for analysis of heavy metals such as copper(Cu), zinc(Zn), lead(Pb) and cadmium (Cd) in unpolished rice grains. The content of Cu in rice grains harvested from Iri was the lowest, 2.94 ppm, while those from Seo-Myon, Shiheung-Gun was the highest, 3.65 ppm. The contents of Zn and Pb in rice grains were ranged 20.56~27.21 ppm and 0.38~0.53 ppm, respectively. Cd content were exceptionally lower than the regulated level, 1.0 ppm. The content of this metal detected in rice grains from Seo-Myon was the highest, 0.509 ppm, but those of other areas were much lower, ranged 0.040~0.136 ppm. The present concentrations of Cu, Zn, and Pb in rice grains were also lower than the expected level and below the maximum permissible concentrations.

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