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ESTIMATION OF DAILY INTAKE OF CHLOROFORM BY JAPANESE HOUSEWIVES
Author(s) -
TOYODA MASATAKE,
KOBAYASHI K.,
MITSURA AKIO,
SAITO YUKIO,
UNO KEIICHI,
SAKABE YOSHIO
Publication year - 1987
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/j.1745-4565.1987.tb00570.x
Subject(s) - chloroform , pentane , chemistry , phosphoric acid , chromatography , ascorbic acid , gas chromatography , nitrogen , food science , organic chemistry
Duplicate portions of daily meals consumed by 21 housewives were collected for 3 consecutive days at Nagoya‐city and Asuke‐cho in Japan. The 24 h duplicate meals were analyzed for chloroform. Thirty grams of samples, 170 mL of water, 1 mL of phosphoric acid, and 0.5 g of ascorbic acid were mixed in a distillation flask which was heated under nitrogen gas flow. The purged chloroform was trapped in n‐pentane cooled at 0° C. The pentane solution was analyzed to by electron capture gas chromatography. Confirmation of chloroform was carried out by GC‐MS. The concentration of chloroform in each of the 24‐h duplicate meals were in the range of 1.7 to 45.8 ppb and the average concentration was 13.7± 9.6 ppb. Daily dietary intake of chloroform by housewives were in the range of 7.5 to 51.9 μg and the mean intake was 26.4 ± 11.8 μg.