安徽农业科学2017，Vol.45Issue(34)：7-9,46,4.
半微量凯氏法测定植株中全氮及测量不确定度评定
Determination of Total Nitrogen in Plant Samples by Semimicro-Kjeldahl Method and Uncertainty Evaluation of Measurement Results
摘要
Abstract
[Objective] Total nitrogen in plant was measured by semimicro-kjeldahl method and the uncertainty of measurement results was evaluated.[Method] Total nitrogen was measured with concentrated sulfuric acid and hydrogen peroxide as boiling liquid at the optimized heating program.[Result]The uncertainty of measurement of plant samples and standard plant samples showed that the data was reasonable and the results were accurate and reliable.[Conclusion] Main sources of the total uncertainty came from the hydrochloric acid standard solution,titration process and repetitive titration.It could be reference for laboratory accurate and rapid determination of total nitrogen in plant.关键词
半微量凯氏法/全氮/不确定度评定/植株Key words
Semimicro-Kejeldahl method/Total nitrogen/Uncertainty evaluation/Plant分类
农业科技引用本文复制引用
刘丽敏,顾重武,曾燕燕..半微量凯氏法测定植株中全氮及测量不确定度评定[J].安徽农业科学,2017,45(34):7-9,46,4.基金项目
浙江省科技计划项目(2016F5002). （2016F5002）
