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安宁及其制剂和泛酸钙,经降解成相应的铵盐,两者于浓碱存在下均逸出 NH_3,可用氨气敏电极测定。在1×10~(-4)～1×10~(-2)mol/L 浓度范围内,校正曲线呈线性,所测得结果与凯氏定氮法基本一致。
Tranquility and its preparations and calcium pantothenate, which have been degraded to the corresponding ammonium salts, escape both NH 3 in the presence of concentrated bases and can be measured with ammonia gas sensing electrodes. The calibration curve is linear in the concentration range of 1 × 10 -4 mol to 1 × 10 -2 mol / L. The measured results are basically consistent with the Kjeldahl method.