吸光度検出イオンクロマトグラフィーによる有機酸の一斉分析: 溶離液切り換えによる清涼飲料水中の酸味料分析

フォーマット:

論文

責任表示:

山本, 敦 ; 松永, 明信 ; 牧野, 正雄 ; 早川, 和一 ; 宮崎, 元一

言語:

日本語

出版情報:

日本薬学会 = The Pharmaceutical Society of Japan, 1987-01-01

著者名:

• 山本, 敦
• 松永, 明信
• 牧野, 正雄
• 早川, 和一
• 宮崎, 元一

掲載情報:

衛生化学 = Eisei kagaku

ISSN:

0013-273x      

巻:

33

通号:

3

開始ページ:

174

終了ページ:

178

バージョン:

publisher

概要:

A method for the simultaneous determination of organic acids was investigated by photometric ion chromatography by using two different eluents. A 4.6 mm i.d.×25 cm stainless column packed with MCI GEL SCA 01 (Mitsubishi Chemical Ind., Ltd.) was used as a separator column. Sample was injected into this column previously equilibrated with 1 mM citraconic acid at pH 6.8. After elution of monobasic organic acids, the eluent was exchanged to a stronger one, … 1 mM m-sulfobenzoic acid at pH 6.8. Dibasic organic acids were eluted before the column reequilibration with the secondary eluent. On the other hand, tribasic organic acids such as citric acid were eluted with the secondary eluent. To prevent the base line disorder due to the eluent exchange, the determination at 254 nm was performed. Because this wave length is an isosbestic point of the two eluents. Sour-taste agents in soft drinks could be analysed directly after dilution of samples. 続きを見る

URL:

http://hdl.handle.net/2297/44937