摘要
采用正交表头L16(4^3×2^6)设计正交实验,优化了一种适用于同时测定烟用有机肥中总氮、总磷、总钾含量的样品消解仪方法。实验考察了三个因子:称样量、冲洗水体积、硫酸体积,每个因子各四水平的实验条件。经过直观分析发现:称样量对钾的测定结果影响较大,故取钾测定时消化条件中称样量的最佳条件,即0.4 g,而冲洗水体积和H2SO4体积对总氮、总磷、钾测定结果的影响都不大。本着尽量淹没样品、节约试剂的原则,冲洗水和H2SO4的体积均选择4 m L。
In this paper,the orthogonal head L16(4^3×2^6)was used to optimize a digester method for simultaneous determination of total nitrogen,total phosphorus and total potassium in organic fertilizer for tobacco.The experimental conditions of three factors:sample weight,volume of flushing water and volume of sulfuric acid were investigated.After intuitive analysis,it was found that:the sample weight has a great influence on the determination results of potassium,so the best condition of weighing sample volume in digestion conditions is 0.4 g,while the volume of flushing water and H2SO4 has little influence on the determination results of total nitrogen,total phosphorus and potassium.In the principle of submerging the sample as much as possible and saving reagents,the volume of flushing water and H2 SO4 are selected as 4 m L.
作者
彭丽娟
倪明
李苓
王炽
王春琼
顾健龙
陈丹
孟红明
刘恩芬
Peng Lijuan;Ni Ming;Li Ling;Wang Chi;Wang Chunqiong;Gu Jianlong;Chen Dan;Meng Hongming;Liu Enfen(Yunnan Tobacco Quality Supervision and Test Station,Yunnan Kunming 650106;Yunnan Academy of Agricultural Sciences,Yunnan Kunming 650000;Yunnan Reconstituted Tobacco Co.,Ltd.,Yunnan Kunming 650106)
出处
《云南化工》
CAS
2020年第11期27-30,共4页
Yunnan Chemical Technology
关键词
正交实验
烟用有机肥
消解仪
总氮
总磷
总钾
orthogonal experiment
organic fertilizer for tobacco
digester
total nitrogen
total phosphorus
total potassium