CAJ | 학술논문

固体废物中全氮的测定一般采用半微量开式法（ CJ/T 103-1999），此方法存在效率低下、操作困难等问题。对半微量开氏法测定城市生活垃圾中全氮方法进行了研究和改进。一是以数控消解炉替代调温电炉进行样品消解，大大缩短了消解时间；二是以自动凯氏定氮仪替代开氏蒸馏器进行自动蒸馏，方便清洗和样品加入，并和数控消解炉配合使用，提高实验效率。经过实际样品的测定，并与国标测定方法进行对比，证明改进后的测定方法准确可行、实验操作方便，实验效率得到提高，效果良好。
고체폐물중전담적측정일반채용반미량개식법（ CJ/T 103-1999），차방법존재효솔저하、조작곤난등문제。대반미량개씨법측정성시생활랄급중전담방법진행료연구화개진。일시이수공소해로체대조온전로진행양품소해，대대축단료소해시간；이시이자동개씨정담의체대개씨증류기진행자동증류，방편청세화양품가입，병화수공소해로배합사용，제고실험효솔。경과실제양품적측정，병여국표측정방법진행대비，증명개진후적측정방법준학가행、실험조작방편，실험효솔득도제고，효과량호。
Semi-micro Kjeldahl method is commonly utilized in determination of total nitrogen in solid waste , but there is in-efficiency, operating difficulties and other problems of this method.Therefore, this paper discussed and improved the process by using semi-micro Kjeldahl method to determine total nitrogen in municipal domestic refuse .First, NC digestion oven instead of thermostat electric furnace is used to digest the samples, greatly reducing the digestion time.Secondly, automatic Kjeldahl analy-zer rather than Kelvin distillation automatic distillation is adopted, which simplified the cleaning and sample addition process.The experimental efficiency is improved.After the actual samples determination and comparison with GB determination method , the results show that the improved determination method is accurate, feasible, and easy to operate.