English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

A high-performance liquid chromatographic method is described for the quantitation of (+)-α-tocopherol in the particulate phase of environmental tobacco smoke (ETS) collected on a 1 -µm pore size Fluoropore membrane. A methanol (MeOH) extract of the membrane, which can be used for four other ETS procedures, is analyzed for (+)-α-tocopherol on a reversed-phase column with fluorescence detection at selective wavelengths of 280 nm excitation and 330 nm emission. A mobile phase of MeOH and water is used. The method is reproducible with a relative standard deviation (%) of about 12. Recovery is 88%, and the procedure is capable of detecting greater than 0.04 µg/m 3  (+)-α-tocopherol in ETS. A comparison of the ETS from five commercially available cigarettes shows similar (+)-α-tocopherol concentrations. A cigarette that primarily heats tobacco yields about 6% of that amount of (+)-α-tocopherol found in ETS from tobacco-burning cigarettes. (+)-α-Tocopherol can be used as a marker for ETS respirable suspended particles (RSP) because it is found at a consistent amount in ETS RSP of 0.29%. However, sufficient amounts of RSP would have to be generated in order to detect (+)-α-tocopherol.

Determination of (+)-α-Tocopherol in Environmental Tobacco Smoke