文章基本信息

标题：吸光度検出イオンクロマトグラフィーによるカルボン酸及び無機陰イオンの一斉分析液体食品への適用
本地全文：下载
作者：吉田育世 ; 早川和一 ; 宮崎元一等
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1985
卷号：31
期号：5
页码：317-323
DOI：10.1248/jhs1956.31.317
出版社：The Pharmaceutical Society of Japan
摘要：Simultaneous determination of carboxylic acids and inorganic anions was investigated by photometric ion chromatography with phthalate solution as an eluent. The retention time and the peak area of carboxylic acids changed remarkably with eluent pH. The optimum conditions at present were as follows : analytical column, OYOBUNKO ASA-4000 (4.6 mm i.d.×25 cm) ; eluent, 5×10^-4 M disodium phthalate ; flow rate, 2 ml/min ; column temperature, 40°C ; detection wavelength, 240 nm ; injection volume, 100 μl. The detection limits for several carboxylic acids as 3 times noise were 0.05-0.07 mg/l in sample solution. Their calibration curves showed straight lines by the peak area method. The present method has an advantage to determine simultaneously not only carboxylic acids but also inorganic anions. Under the condition described above, both carboxylic acids and inorganic anions in several liquid foods were easily determined by direct injection of the sample prepared with only dilution.
关键词：carboxylic acid;inorganic anion;photometric ion chromatography;phthalate solution;eluent pH;liquid food