Determination of antimony in Lead with High antimony by cerium sulfate titration
The accurate determination of antimony content in high antimony lead is of great significance to its production and trading.Use nitric acid,tartaric acid mixed acid to dissolve,add sulfuric acid carbonized tartaric acid,drop add nitric acid to remove carbon.A method for the determination of antimony content in high antimony lead by ceric sulfate titration was established with diethylamine sulfate as reducing agent,methyl orange as indicator and ceric sulfate standard solution at 80℃～90℃.The influence of the amount of dissolved acid,sulfuric acid,the selection of reducing agent and the amount of reducing agent on the experimental process was investigated.The relative standard deviations(n=7)of 4 samples were 0.43%～1.5%,and the recoveries were 99.8%～106.1%.This method is compared with inductively coupled plasma atomic emission spectrometry.The results of the two methods are basically the same,and the results are verified by other laboratories.The method is accurate,reliable and suitable for the determination of 5%～50%antimony in high antimony lead.
high antimony leadAntimony contentCerium sulfate titration method
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