Mori I, Fujita Y, Fujita K, Fujita R, Nakahashi Y, Kato K
Osaka University of Pharmaceutical Sciences, Matsubara-shi, Osaka 580, Japan.
Talanta. 1988 Nov;35(11):879-83. doi: 10.1016/0039-9140(88)80206-6.
A simple and sensitive spectrophotometric determination of bismuth(III) is based on the reaction between bismuth(III) and o-hydroxyhydroquinonephthalein in the presence of Brij 58 in acidic media. The calibration graph is linear over the range 0-3.5 mug/ml bismuth(III) in the final solution, and the apparent molar absorptivity at 520 nm is 9.03 x 10(4) l. mole(-1). cm(-1). The proposed method is 2-10 times more sensitive than other methods, and simpler. It has been applied to the assay of bismuth(III) in pharmaceutical preparations, such as dermatol and bismuth subnitrate, with good results.
基于铋（III）与邻羟基对苯二酚酚酞在酸性介质中、存在Brij 58时的反应，建立了一种简单灵敏的分光光度法测定铋（III）。在最终溶液中，铋（III）浓度在0 - 3.5微克/毫升范围内校准曲线呈线性，520纳米处的表观摩尔吸光系数为9.03×10⁴升·摩尔⁻¹·厘米⁻¹。所提出的方法比其他方法灵敏2 - 10倍，且更简单。该方法已应用于药物制剂如皮炎素和次硝酸铋中铋（III）的测定，结果良好。
