title: Occurrence of perchlorate in rice from different areas in the Republic of Korea.
abstract: Perchlorate concentrations in rice samples from many different provinces, and correlation with surface water contamination, were investigated in the Republic of Korea. Perchlorate levels in the 51 rice samples purchased from local markets ranged from below the detection limit to 1.79 ± 0.39 μg/kg with a mean level of 0.21 μg/kg and 7 samples collected from the Nakdong River watershed ranged from 0.38 ± 0.1 to 3.23 ± 0.47 μg/kg with a mean level of 0.9 μg/kg. The correlation coefficient between perchlorate levels in rice samples from the Nakdong river watershed and the levels in surface water was estimated to be approximately 0.904 in the 95% confidence interval. These results show that surface water contamination was highly related to the perchlorate pollution of rice in the Republic of Korea.
authors.affiliation: Department of Civil and Environmental Sciences, Korea Army Academy at Yeong-Cheon, 135-1, Changhari, GoGyeongmeon, Yeong-cheon, Gyeong-buk, 770-849, Republic of Korea.
authors.forename: Do-Hyung
authors.initials: DH
authors.lastname: Kim
authors.forename: Yeomin
authors.initials: Y
authors.lastname: Yoon
authors.forename: Kitae
authors.initials: K
authors.lastname: Baek
authors.forename: Jonghun
authors.initials: J
authors.lastname: Han
authors.forename: Namguk
authors.initials: N
authors.lastname: Her
mesh_terms: D057230:Limit of Detection; D012275:Oryza / Q000737:chemistry*; D010472:Perchlorates / Q000032:analysis*; D056910:Republic of Korea; D045483:Rivers / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D010472:Perchlorates; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; C494474:perchlorate
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