nav emailalert searchbtn searchbox tablepage yinyongbenwen piczone journalimg journalInfo journalinfonormal searchdiv searchzone qikanlogo popupnotification paper paperNew
2013, S2, v.39;No.192 54-56
微波消解-纳氏试剂比色-分光光度法测定烟叶中的总氮含量
基金项目(Foundation):
邮箱(Email):
DOI:
摘要:

用硫酸和双氧水在微波消解系统中对烟叶进行消化,使样品中的总氮转化为硫酸铵,在碱性条件下用纳氏试剂显色,420 nm波长处用可见分光光度计对溶液进行测定。结果表明:该法方便、快速、重现性好,加标回收率在90%~115%之间,可用于大批样品的测定。

Abstract:

The tobacco leaves were digested by sulfuric acid and hydrogen peroxide in the microwave oven, and the digested samples were colored by Nessler's reagent in alkaline environment. This method has been used in real determination of tobacco samples,and the added recovery is between 90%~115%. Thus,the method is reliable,simple and executed.

基本信息:

中图分类号:S572;O657.3

引用信息:

[1]郭敬,杨小秋.微波消解-纳氏试剂比色-分光光度法测定烟叶中的总氮含量[J].中国测试,2013,39(S2):54-56.

发布时间:

2013-12-30

出版时间:

2013-12-30

检 索 高级检索

引用

GB/T 7714-2015 格式引文
MLA格式引文
APA格式引文