無機塩中の全水分の測定

概要

論文の詳細を見る
Water in salt can be determined by its nearinfrared absorptions at 1.45 and 1.92 μ, in which the measurement is carried out on the salt in solid state and/or on it dissolved in solvents. The former procedure utilizes plain tablet method, alkalihalide tablet method and Nujol mull method. Those methods are useful for the determination of water in alkalimetal salts and alkaliearth salts by near infrared spectrometry, but cannot be applied for heavy metal salts since they are opaque in the said near infrared region. The results of estimation for alkali salts are less accurate and precise than the other methods.<BR>The latter procedure utilizes deuterium dioxide for dissolving the sample salts, in which water can be determined with the same accuracy as the determination of water in deuterium dioxide. The latter method gives more simple, rapid and reproducible results than the other methods.
社団法人日本分析化学会の論文