用钙铬红分光光度法测定铍。
Spectrophotometric determination of beryllium with calcichrome.
作者信息
Einaga H, Ishii H
机构信息
Institute of Materials Science, University of Tsukuba, Niihari, Ibaraki, 305, Japan.
出版信息
Talanta. 1981 Nov;28(11):799-803. doi: 10.1016/0039-9140(81)80020-3.
A method is established for the spectrophotometric determination of small amounts of beryllium as a 1:1 complex with Calcichrome in slightly acidic solution. Beer's law is obeyed over the range 0.05-0.6 ppm Be in the final solution and the apparent molar absorptivity is 9.7 x 10(3) l.mole(-1). cm(-1) at 625 nm. Up to about 15 mug of beryllium in the final solution can be sensitively and selectively determined with a relative error of less than 2% in the presence of EDTA as masking agent.
建立了一种分光光度法，用于在微酸性溶液中测定少量铍，铍与钙铬红形成1:1配合物。最终溶液中铍含量在0.05 - 0.6 ppm范围内符合比尔定律，在625 nm处的表观摩尔吸光系数为9.7×10³ l·mol⁻¹·cm⁻¹。在存在乙二胺四乙酸（EDTA）作为掩蔽剂的情况下，最终溶液中高达约15微克的铍可被灵敏且选择性地测定，相对误差小于2%。
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