Thus, in a conical flask with small funnel, sample is decomposed by HNO_3-H_3PO_4-H_2O_2, using phosphoric acid of 20% as reaction medium, concentration of potassium borohydride is controlled at 2%.

  • 以HNO3H3PO4H2O分解样品,选用20%的磷酸作反应介质;硼氢化钾浓度控制在2%。

  • 互联网摘选 2025-02-23 18:36:42

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