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本文研究了试剂5-羧基偶氮胂I与铍的显色反应。试剂与铍在557nm形成1∶1络合物,其反应的酸度pH为5.3~6.2,毫克量级的干扰离子存在不干扰测定。该试剂可不加任何掩蔽剂,直接测定水样及锌基合成样中的铍。
In this paper, the color reaction of 5-carboxyarsenazo I with beryllium was studied. The reagent formed a 1: 1 complex with beryllium at 557 nm with an acidity pH of 5.3-6.2. The presence of interference ions on the milligram scale did not interfere with the assay. The reagent can be directly without any masking agent, water samples and beryllium synthesis of zinc-based samples.