title: [Determination of sodium chlorite in processed herring roe by ion chromatography with a conductivity detector].
abstract: An analytical method for residual sodium chlorite in several kinds of processed herring roe treated with sodium chlorite was studied. Sodium chlorite was extracted with 9 mmol/L sodium carbonate. After centrifugation, the supernatant was filtered through a 0.2 microm nylon filter. The filtrate was deproteinized by ultrafiltration and chloride ion was removed with an On-Guard Ag cartridge column. The eluate was subjected to conductivity detector-ion chromatography. Recoveries of sodium chlorite from herring roe spiked at the level of 5 mg/kg were 88 +/- 3.7% (n = 5, CV 4.2%). The method had a quantitation limit of 5 mg/kg for processed herring roes.
authors.affiliation: National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kawasaki
authors.forename: Hiroki
authors.initials: H
authors.lastname: Kubota
authors.forename: Chikako
authors.initials: C
authors.lastname: Yomota
authors.forename: Kenichi
authors.initials: K
authors.lastname: Tanamoto
mesh_terms: D002712:Chlorides / Q000032:analysis*; D002852:Chromatography, Ion Exchange / Q000295:instrumentation / Q000379:methods*; D005396:Fish Products / Q000032:analysis*; D005504:Food Analysis / Q000295:instrumentation / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D005511:Food Handling; D014462:Ultrafiltration
chemical_list: D002712:Chlorides; C001599:chlorite