Determination method of gallium content in alumina intermediate material

Determination method of gallium content in alumina intermediate material

  • CN 103,335,961 A
  • Filed: 06/07/2013
  • Published: 10/02/2013
  • Est. Priority Date: 06/07/2013
  • Status: Active Application
First Claim
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1. the assay method of gallium content in the aluminium oxide intermediate material, comprise the absorbance of measuring test liquid with conventional flame atomic absorption spectrometry, in the standard working curve of gallium, obtain corresponding gallium content value according to this absorbance, it is characterized in that test liquid makes through the following step:

  • A, the amount of pressing 10~

    12g/g sample add potassium pyrosulfate in aluminium oxide intermediate material sample, under 800~

    900 ℃

    of temperature, heating and melting sample 10~

    20min gets molten sample;

    B, in the molten sample of steps A, by the amount of 20~

    30mL/g sample, adding concentration is the hydrochloric acid solution of 6mol/L, be heated to 100~

    150 ℃

    , molten sample is all dissolved, be cooled to room temperature, hydrochloric acid solution with same concentrations is diluted to 0.0333g/mL again, shakes up, and gets lysate;

    The lysate of C, filtration step B, filtrate, and use with the hydrochloric acid solution washing precipitate of step B same concentrations and filter vessel 8~

    10 times, merge cleansing solution in filtrate, use again with the hydrochloric acid solution of step B same concentrations dilution filtrate to 0.0143g/mL, get dilution;

    D, in step C gained dilution, the amount of pressing the 5mL/g sample, adding concentration is the stannous chloride solution of 95~

    100g/L, shakes up, and press the amount of 20mL/g sample again, adds butyl acetate, extracts 40~

    60s, behind the standing demix, abandons water, gets organic phase;

    E, in step D gained organic phase, the amount of pressing the 50.00mL/g sample adds water, back extraction 40~

    60s, standing demix, water intaking is sample to be tested liquid mutually.

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