DETERMINATION OF INORGANIC CONSTITUENTS IN SUCROSE SOLUTIONS
DETERMINATION OF INORGANIC CONSTITUENTS IN SUCROSE SOLUTIONS
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DOI：
10.1021/ac60093a024
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发表时间：
1954-01-01
影响因子：
7.4
通讯作者：
DEITZ, VR
中科院分区：
文献类型：
--
作者：
GEE, A;DOMINGUES, LP;DEITZ, VR
研究了在不灰化的情况下对商品糖进行钾、钠、钙、镁、氯化物、硫酸盐、磷酸盐和硅酸盐分析的快速方法。金属成分，特别是碱金属，在5brix溶液中用火焰光度法方便地测定。氢火焰比乙炔火焰具有更低的辐射干扰。火焰光度法测定钙和镁的值与乙二胺四乙酸滴定法测定的值吻合较好，但在许多情况下后者具有优势。氯离子用电导滴定法测定，硫酸盐用硫酸钡比浊法测定。用两种不同条件下形成的钼蓝的强度测定了可溶性硅酸盐和无机磷酸盐。
Rapid procedures were investigated for the analysis of commercial sugars for potassium, sodium, calcium, magnesium, chloride, sulfate, phosphate, and silicate without ashing of the sugar. The metallic constituents, particularly the alkali metals, are conveniently determined in a 5 Brix solution by flame photometry. The hydrogen flame was better than the acetylene because of lowerradiation interferences. The flame photo-metric determinations for calcium and magnesium agreed well with the values obtained by titration with ethylenediaminetetraacetic acid, but the advantage is with the latter in many instances. Chloride was satisfactorily determined by conductometric titration and sulfate by turbidimetric measurements on barium sulfate. Soluble silicate and inorganic phosphate were measured by the intensities of the molybdenum blue formed under two different sets of conditions.