Method for dissolving magnesium metaphosphate by plasma spectroscopy
A technology of plasma spectroscopy and magnesium metaphosphate is applied in the field of preparing solution samples when detecting magnesium metaphosphate impurity elements by ion spectroscopy, which can solve the problems of difficult determination, increased background, unfavorable sampling system, etc., and can reduce the lower limit of analysis and detection. , Improve the analytical sensitivity, the method is simple and easy to operate
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Embodiment 1
[0022] Embodiment 1: take by weighing 0.5000 gram glassy powder Mg (PO 3 ) 2 , with a purity of 99.9% and a particle size of less than 200 mesh, put it in a 250ml dry beaker, add 5ml of superior pure concentrated perchloric acid with a weight percentage of ≥72% and 5ml of superior pure concentrated sulfuric acid with a weight percentage of ≥98% , heated to a slight boil at low temperature and kept for 60-120 minutes. Let cool afterwards. Carefully add pure water to dilute, dissolve, cool, transfer to a 50ml volumetric flask, dilute to the mark with water, shake well, and obtain a magnesium metaphosphate solution for testing with an inductively coupled plasma spectrometer.
Embodiment 2
[0023] Embodiment 2: take by weighing 0.5000 gram of non-glass state powder Mg (PO 3 ) 2 , with a purity of 99.7% and a particle size of less than 200 mesh, put it in a 100ml dry quartz beaker, add 3ml of superior pure concentrated perchloric acid with a weight percentage of ≥72% and 3ml of superior pure perchloric acid with a weight percentage of ≥98% Concentrated sulfuric acid, heated at low temperature to slightly boiling 200-350°C, kept for 1-2 hours, a large number of needle-shaped crystals precipitated, and the solution was clear and not turbid. Let cool afterwards. Carefully add distilled water to dilute, dissolve, cool, transfer to a 50ml volumetric flask, dilute with water to the mark, shake well and set aside.
Embodiment 3
[0024] Embodiment 3: take by weighing 0.5000 gram glassy powder Mg (PO 3 ) 2 , with a purity of 99.4% and a particle size of less than 200 mesh, put it in a 50ml Erlenmeyer flask, add 2ml of superior pure concentrated perchloric acid with a weight percentage of ≥72% and 3ml of superior pure concentrated sulfuric acid with a weight percentage of ≥98% , Heated at low temperature to slightly boiling 200-350°C, kept for 1-2 hours, a large number of needle-like crystals precipitated. Let cool afterwards. Carefully add distilled water to dilute, dissolve, cool, transfer to a 50ml volumetric flask, dilute with water to the mark, shake well and set aside.
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