{"id":3705,"date":"2025-07-10T14:46:48","date_gmt":"2025-07-10T06:46:48","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3705"},"modified":"2025-07-10T14:46:48","modified_gmt":"2025-07-10T06:46:48","slug":"determination-of-gold-in-ore-dissolution-solution-flame-atomic-absorption-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/th\/applications\/determination-of-gold-in-ore-dissolution-solution-flame-atomic-absorption-spectrometry\/","title":{"rendered":"\u0e01\u0e32\u0e23\u0e01\u0e4d\u0e32\u0e2b\u0e19\u0e14\u0e17\u0e2d\u0e07\u0e04\u0e33\u0e43\u0e19\u0e2a\u0e32\u0e23\u0e25\u0e30\u0e25\u0e32\u0e22\u0e41\u0e23\u0e48 (\u0e2a\u0e40\u0e1b\u0e04\u0e42\u0e15\u0e23\u0e40\u0e21\u0e15\u0e23\u0e35\u0e01\u0e32\u0e23\u0e14\u0e39\u0e14\u0e0b\u0e36\u0e21\u0e2d\u0e30\u0e15\u0e2d\u0e21\u0e44\u0e1f)"},"content":{"rendered":"
    \n
  1. Method Overview<\/li>\n<\/ol>\n

    The dissolved ore sample is measured for absorbance at 242.8 nm using an atomic absorption spectrometer, and the gold content is quantified by comparison with a standard curve.<\/p>\n

      \n
    1. 2. Instruments and Reagents<\/li>\n<\/ol>\n

      2.1 Instruments and Equipment<\/p>\n

      2.1.1 Detection Instruments<\/p>\n

      Flame Atomic Absorption Spectrophotometer\u00a0(With Gold Hollow Cathode Lamp)<\/p>\n

      Acetylene\u00a0(1 bottle,Purity\u226599.99%)<\/p>\n

      Air Compressor\u00a0(Rated Discharge Pressure: 0.3 MPa )<\/p>\n

      2.1.2 Pretreatment Equipment<\/p>\n

      Ultra-Pure Water System<\/p>\n

      Micropipettes<\/p>\n

      Volumetric Flasks<\/p>\n

      2.2 Reagents<\/p>\n

      2.2.1 Reagents<\/p>\n

      Hydrochloric Acid<\/p>\n

      2.3 Standards<\/p>\n

      2.3.1 Stock Solution<\/p>\n

      GSB04-1715-2004 Gold Standard Stock Solution\u00a0\u00a0\u00a01000 \u03bcg\/mL<\/p>\n

        \n
      1. Sample Testing<\/li>\n<\/ol>\n

        3.1 Testing Conditions<\/p>\n

        Reference testing conditions for the flame atomic absorption spectrophotometer:<\/p>\n

        Element\u00a0\u00a0Gold<\/p>\n

        Wavelength (nm) \u00a0\u00a0242.8<\/p>\n

        Spectral Bandwidth (nm) \u00a0\u00a00.4<\/p>\n

        Element Lamp Current (mA) \u00a0\u00a04.0<\/p>\n

        Gas Height (mm) \u00a0\u00a06<\/p>\n

        Gas Flow Rate (mL\/min) \u00a0\u00a01300<\/p>\n

        Air Compressor Pressure (MPa) \u00a0\u00a00.22<\/p>\n

        3.2 Sample Testing Steps<\/p>\n

        Adjust the instrument to its optimal working state, ignite the flame, and adjust the gas flow rate. Sequentially test the standard and sample solutions, read the data, input the sample weight, and view and record the results.<\/p>\n

        3.3 Result Calculation<\/p>\n

        The gold content in the sample is calculated using the following formula:<\/p>\n

        \"\"<\/p>\n

        Where:<\/p>\n

        \u03c1(Au)\u00a0\u2014 Mass concentration of gold in the test solution, in milligrams per liter (mg\/L);<\/p>\n

        m\u00a0\u2014 Mass of gold in the sample obtained from the calibration curve, in micrograms (\u03bcg);<\/p>\n

        V\u00a0\u2014 Volume of the sample solution, in milliliters (mL).
        \n