一、引言常用来检驗有机物中氮元素的方法,一般可分为两类:一种是把其中的氮元素轉变为氨,再检驗氨。另一种是把它轉变为氰化鈉,然后再检驗氰离子。检驗氰离子的方法很多,例如使它轉变为普魯士蓝、硫氰酸铁、亚硝酰鉄氰化鈉、亚銅氰化鉀、氰化銀、碘化氰及二氨基联苯蓝等等。对于不含硫离子的試液来說,其中要算生成二氨基朕苯蓝 I. INTRODUCTION The methods commonly used to test nitrogen in organic matter can generally be divided into two categories: one is to convert one of the nitrogen elements into ammonia and then the ammonia. The other is to convert it to sodium cyanide, and then check the cyanide ion. There are many ways to test cyanide ions, such as converting it to Prussian blue, iron thiocyanate, sodium nitrosyl cyanide, potassium copper cyanide, silver cyanide, cyanogen iodide and diaminobenzo blue Wait. For non-sulfur ions in the test solution, which should be counted to generate diamino benzoite blue