%0 Journal Article
%T 凯氏定氮仪测定土壤全氮方法优化<br>Optimization of Kjeldahl Method for Determination of Total Nitrogen in Soil
%A 聂晶晶
%A 杨翠
%A 陈文昶
%A 余夏艳
%J Advances in Environmental Protection
%P 24-31
%@ 2164-5493
%D 2024
%I Hans Publishing
%R 10.12677/AEP.2024.141005
%X 土壤样品在加速剂的参与下，用浓硫酸消煮时，各种含氮有机化合物，经过复杂的高温分解反应，转化为铵态氮。碱化后蒸馏出来的氨用硼酸吸收，以酸标准溶液滴定，求出土壤全氮含量。通过方法优化是解决了人工滴定存在的人为误差、消解完全、操作简单、污染小。<br />
When soil samples are cooked in concentrated sulfuric acid with the help of accelerant, various nitrogen-containing organic compounds undergo a complex decomposition reaction at high tem-perature to convert into ammonium nitrogen. The ammonia distilled after alkalization was ab-sorbed by HBO4, and the total nitrogen content in soil was determined by titration with acid standard solution. By means of method optimization, the artificial error, complete digestion, simple operation and less pollution in manual titration are solved.
%K 全氮，凯氏定氮仪，土壤<br>Total Nitrogen
%K Kjeldahl Auto Analyzer
%K Soil
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=80463