Determination method of antimony content in electrolytic antimony
A method of determination, electrolysis of antimony technology, applied in the direction of chemical analysis by titration method, etc., to achieve the effect of accurate measurement results, convenient operation and simple analysis steps
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Embodiment 1
[0053] A kind of assay method of antimony content in electrolytic antimony, concrete operation steps are as follows:
[0054] Step 1, weigh 0.15g of electrolytic antimony sample (1), place it in a 300ml Erlenmeyer flask, add water to moisten it, add 15ml of concentrated sulfuric acid, cover with a watch glass, heat on a hot plate until the sample is completely dissolved, remove it and cool to room temperature;
[0055] Step 2, add 70ml (1+3) hydrochloric acid, heat to 80°C-90°C, add 1-2 drops of methyl orange solution, and titrate with cerium sulfate standard titration solution under constant shaking, when the solution turns light red, Titrate drop by drop until the red color of the solution disappears;
[0056] Step 3, do a blank test along with the sample;
[0057] Step 4, calculate the mass fraction of antimony content in the sample according to the following formula:
[0058]
[0059]In the formula:
[0060] ω(Sb)—mass fraction of antimony content in the sample, %; ...
Embodiment 2
[0069] A kind of assay method of antimony content in electrolytic antimony, concrete operation steps are as follows:
[0070] Step 1. Weigh 0.15g of electrolytic antimony sample (2), place it in a 300ml Erlenmeyer flask, add water to moisten it, add 15ml of concentrated sulfuric acid, cover with a watch glass, heat on a hot plate until the sample is completely dissolved, remove it and cool to room temperature;
[0071] Step 2, add 70ml (1+3) hydrochloric acid, heat to 80°C-90°C, add 1-2 drops of methyl orange solution, and titrate with cerium sulfate standard titration solution under constant shaking, when the solution turns light red, Titrate drop by drop until the red color of the solution disappears;
[0072] Step 3, do a blank test along with the sample;
[0073] Step 4, calculate the mass fraction of antimony content in the sample according to the following formula:
[0074]
[0075] In the formula:
[0076] ω(Sb)—mass fraction of antimony content in the sample, %;...
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