CN Patent

CN104122345A — 烟用纸中1,1,1-三羟甲基丙烷的测定方法

Assigned to National Tobacco Quality Supervision and Inspection Center · Expires 2014-10-29 · 12y expired

What this patent protects

本发明属于烟用纸中有害物质残留的理化检验技术领域，具体是一种烟用纸中1,1,1-三羟甲基丙烷的测定方法，其特征在于：首先将烟用纸剪碎后加超纯水，然后超声萃取，萃取液离心后直接以液相色谱-串联质谱测定纸张中的1,1,1-三羟甲基丙烷。本方法能够快速、准确检测纸张中1,1,1-三羟甲基丙烷残留量，具有测定结果准确、测定干扰少、灵敏度高及重复性好的优点。

USPTO Abstract

本发明属于烟用纸中有害物质残留的理化检验技术领域，具体是一种烟用纸中1,1,1-三羟甲基丙烷的测定方法，其特征在于：首先将烟用纸剪碎后加超纯水，然后超声萃取，萃取液离心后直接以液相色谱-串联质谱测定纸张中的1,1,1-三羟甲基丙烷。本方法能够快速、准确检测纸张中1,1,1-三羟甲基丙烷残留量，具有测定结果准确、测定干扰少、灵敏度高及重复性好的优点。

Drugs covered by this patent

Patent Metadata

Patent number
CN104122345A
Jurisdiction
CN
Classification
—
Expires
2014-10-29
Drug substance claim
No
Drug product claim
No
Assignee
National Tobacco Quality Supervision and Inspection Center
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

Track this patent

Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.