Method for measuring selenium content in copper indium gallium selenium solar photovoltaic cell target material

Method for measuring selenium content in copper indium gallium selenium solar photovoltaic cell target material

  • CN 106,053,717 A
  • Filed: 07/12/2016
  • Published: 10/26/2016
  • Est. Priority Date: 07/12/2016
  • Status: Active Application
First Claim
Patent Images

1. the assay method of Se content in a copper indium gallium selenium solar photovoltaic cell target, it is characterised in that its step includes:

  • (1) weigh sample to be placed in 250mL beaker, little water moistening, add 4.5mL salpeter solution, 1.5mL hydrochloric acid solution, lidUpper surface ware, the micro-boiling of low-temperature heat is completely dissolved to sample, and continuation heating evaporation, to about 1mL, takes off;

    (2) rinse surface plate and beaker with a small amount of water, add 60mL (1+1) hydrochloric acid solution and be heated to micro-boil-off solution soluble-saltClass, adds 1.5g-2g carbamide, after boiling 3min, takes off addition 30mL sulfurous acid solution, stirs, keep 50 DEG C of-70 DEG C of liquidTemperature, until precipitating complete blackening, filters with quantitative filter paper at a slow speed, hot salt acid elution beaker and each 3 times of precipitation;

    (3) precipitation is put in former beaker together with filter paper, add 10mL hydrochloric acid solution, 1mL salpeter solution in low-temperature heatDissolve, with Glass rod filter paper smashed to pieces and stir, to be precipitated be completely dissolved after, add 60mL boiling water, 2g carbamide, boil 2min-Take off after 3min, make indicator with ethanolic phenolphthalein solution, be neutralized to the proper thin out redness of solution colour with sodium hydroxide solution;

    (4) add 20mL (1+1) sulfuric acid solution, after cooling, add water to about 150mL, add sulfur generation being sufficiently stirred for lower buretteSodium sulfate standard solution 15mL-20mL, adds 2mL starch solution and 0.5mL liquor kalii iodide, continues to use sodium thiosulfate standardVolumetric soiutions is titrated to blue disappearance, adds 1mL liquor kalii iodide, continues to be titrated to blue disappearance, the most repeatedly until addingAfter entering liquor kalii iodide, solution no longer becomes blueness and is terminal, records the volume of consumed sodium thiosulfate standard titration solutionV, is blank assay, the volume V of record blank assay consumed sodium thiosulfate standard titration solution simultaneously0

    (5) in sample, the content of selenium calculates as the following formula;

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×