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KMID : 0385520100230020155
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Analytical Science & Technology
2010 Volume.23 No. 2 p.155 ~ p.160
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Determination of bromate in bottled mineral water in Korea
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Ahn Hye-Sil
Kim Hyun-Koo
Park Ju-Hyun
Jung Dong-Il
Kim Tae-Seung
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Abstract
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This study was performed to compare international analytical methods of bromate and applied to determine bromate in bottled mineral water in Korea. Bromate in bottled mineral water was eluted by 10~50 mM potassium hydroxide (KOH) and determined by ion chromatograph-suppressed conductivity detector (ICCD). Sample was purified with on guard Ba-, Ag- and H-cartridges and 0.2 ㎛ membrane filter. The method detection limit (MDL) and the limit of quantitation (LOQ) of bromate were 0.1 and 0.5 ㎍/L, respectively. The calibration curve showed good lineality above 0.9998 in the ranges of the 0.5~40 μg/L. Bromate from 33 samples among total 157 bottled mineral water samples was detected in the concentration range of 0.5~6.5 ㎍/L. The detected concentrations were within bottled mineral water quality criteria (10 ㎍/L) in Korea.
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KEYWORD
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bromate, IC-CD, bottled mineral water
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