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根据甲醛能与NH_4~+反应生成等摩尔H~+的原理,用电位滴定法测定了胃液氨的含量。结果表明,该法的灵敏度高于传统的扩散法,回收率为92.5％—93.8％,可作为临床和科研工作中定量检测胃液氨浓度的可靠方法。
According to the principle that formaldehyde can react with NH_4 ~ + to form equimolar H ~ +, the content of ammonia in gastric juice was determined by potentiometric titration. The results showed that the sensitivity of the method was higher than that of traditional diffusion method, and the recovery rate was 92.5% -93.8%. This method can be used as a reliable method for quantitative determination of gastric ammonia concentration in clinical and research work.