Finding F-1761

“Chemical speciation of the organic aerosol fraction using mass spectrometric data and factor analysis identified a reduced nitrogen component, predominantly found in the indoor environment, contributing 29% of the indoor submicron aerosol mass.”

Thirdhand smoke uptake to aerosol particles in the indoor environment (2018). Science advances. Page 1. CKB 7344

Structure

Source: Tobacco smoke (secondhand smoke)
Factor: Particulate matter (PM₂.₅ and PM₁₀)
Method: Mass spectrometry
Setting: classroom
Study design: measurement study in a university classroom with no modern history of smoking: submicrometre aerosol measured by aerosol mass spectrometry indoors and outdoors, with the organic fraction resolved into components by factor analysis (class 4)
Effect: other 29
Caveat: the component is attributed to tobacco smoke residue by factor analysis of mass spectra, in a room where nobody smokes, and not by a direct measurement of a tobacco marker

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.