蛋白质一般含氮约百分之十六,通常用含氮量估计蛋白质的量。血清中测得的总氮去除非蛋白含氮物质(如尿素、尿酸、氨基酸等)的氮量,即蛋白质的含氮量。有机物中氮的测定,过去多采用凯氏蒸馏滴定法,虽结果较可靠,但操作烦杂费时。国内氨气敏电 The protein is typically about 16% nitrogen and the nitrogen content is usually used to estimate the amount of protein. Total nitrogen measured in serum Nitrogen removed from non-protein nitrogenous substances (such as urea, uric acid, amino acids, etc.), that is, the nitrogen content of the protein. Determination of nitrogen in organic matter, in the past more use of Kjeldahl distillation titration, although the results are more reliable, but the operation complicated and time-consuming. Domestic ammonia gas sensitive