公开(公告)号：US10775338B2

公开(公告)日：2020-09-15

申请号：US15401704

申请日：2017-01-09

申请人： ALPHASENSE LIMITED

发明人： John Saffell ,  Ronan Baron ,  Marlene Hossain

IPC分类号： G01N27/40 ,  G01N33/00 ,  G01N27/404 ,  G01N27/413

摘要： The invention relates to an electrochemical gas sensing apparatus for sensing one or more analytes, such as NO2 and/or O3, in a sample gas and a method of using same. The apparatus uses Mn2O3 as a filter for ozone. The Mn2O3 may take the form of a powder which may be unmixed, mixed with various PTFE particles sizes, formed into a solid layer deposited onto a membrane and/or pretreated with NO2.