탑라이스 생산지역 논토양 중 중금속 함량과 쌀의 안전성
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서지정보
ㆍ발행기관 : 한국식품위생안전성학회
ㆍ수록지정보 : 한국식품위생안전성학회지 / 23권 / 3호
ㆍ저자명 : 박상원, 윤미연, 김진경, 박병준, 김원일, 신중두, 권오경, 정덕화
ㆍ저자명 : 박상원, 윤미연, 김진경, 박병준, 김원일, 신중두, 권오경, 정덕화
영어 초록
Objective of this study was to investigate residual the levels of heavy metals in rice grain and soils of “Top-Rice” and common rice cultivation areas from 2005 to 2007. Soil and rice grain samples were taken from 33 “Top-rice” areas and neighboring paddies, and analyzed for the elements using ICP-OES and ICP-TOF-MS after acid digestion. A concentration of arsenic in paddy soil was 1.33 mg/kg which was below 1/5-1/11 fold of the threshold levels (concern: 4 mg/kg, action: 10 mg/kg), and paddy soil was 0.06 mg/kg of Cd (cadmium) being below 1/25-1/67 fold of the limits (concern: 1.5 mg/kg, action: 4 mg/kg). A level of Cu (copper) in paddy soil was 4.57 mg/kg which was below 1/11-1/27 fold of the threshold levels (concern: 50 mg/kg, action: 125 mg/kg), and Pb (lead) concentration in paddy soil was found to be a 4.68 mg/kg. In addition, Hg (mercury) concentration in paddy soil was to be a 0.03 mg/ kg, which was below 1/131-1/328 fold of the threshold levels (concern: 4 mg/kg, action: 10 mg/kg). The average concentrations of As, Cd, Cu, Pb and Hg in the polished rice samples were 0.037, 0.043, 0.280, 0.048 and 0.002 mg/kg, respectively. These levels are lower than those of other countries in rice grains. Assuming the rice consumption of 205.7 g/day by total dietary supplements in Korea, the amount of total weekly metal intake of As, Cd, Cu, Pb and Hg by polished rice were estimated to be 0.0892, 1.035, 6.712, 1.161 and 0.054 μg/kg body weigh/week, respectively. The PTWI(%) of As, Cd, Cu, Pb and Hg were 5.95 (inorganic arsenic), 0.26 (total arsenic), 14.79, 0.19, 4.65 and 1.07% estimated to be 0.0892, 1.035, 6.712, 1.161 and 0.054 μg/kg body weigh/week, respectively. In conclusion, it was appeared that the heavy metals contamination in the brown and polished rice should not be worried in Korea.참고 자료
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