Study on Determining Micro - Lead Contaninde in Copper Alloy by SXO Photometric Analysis
Shi Wenzheng(Department of Chemistry, Zhumardian Teacher's College, Zhumadian, 463000)
This article defined the analysing conditions of precipitating foreign substances rapidly by lead sulphate and strontium sulphate, and of that when pH = 5. 5, Lead and SXO form red coordination,and determined at λ = 540nm. This Method has a better accuracy and a better stableness. It is covement and save time, and it is fit for the production of copper alloy when lead content is at about 0. 003 % ￣0. 22%.