应用美国力可公司生产的煤炭碳、氢、氮分析仪测定化肥中总氮的含量 ,通过炉温、样品量、放大器增益的选择 ,积分时间等的对比 ,确定了以CHN— 1 0 0 0分析仪测定化肥总氮的检测方法 ,本方法测定速度快、精密度高、准确度好 .氮的相对标准偏差小于 0 5% The content of total nitrogen in chemical fertilizer was determined by the coal carbon, hydrogen and nitrogen analyzer produced by American Lik Co. Through the comparison of furnace temperature, sample quantity, amplifier gain selection, integration time and so on, it was determined that CHN-1 0 0 0 Analyzer Determination of total nitrogen fertilizer, the method of determination of speed, high precision, good accuracy. Relative standard deviation of nitrogen is less than 0 5%