フッ化物イオン定量法{JIS K 0102(34.1)}の改良

概要

論文の詳細を見る
Fluoride in water samples of given fluoride concentrations has been determined based on the "JIS K 0102 (34.1)" method. The following two problems have been found : 1) near the lower limit of the concentration range in this method, an error of about +25% occurs ; 2) neither the available period nor the manner of storing the lanthanum-Alizarine complexone solution is described. the following two proposals have been made for dealing with the above two problems : 1) the value of the lower limit for the determination of fluoride should be raised ; 2) the complexone solution remains stable for about 40 days when the solution is stored in a brown bottle in a dark and cool place.
社団法人日本分析化学会の論文
1992-02-05