Measurement and Testing

Dynamic generation of trace gas standards of oxygen-sensitive VVOCs at below zero temperature using Tracer Cert diffusion tubes Presented by Tracer Measurement Systems Ltd at PEFTEC 2015

Jan 21 2016 Read 867 Times

Free to read

This article has been unlocked and is ready to read.

Download

ISO 6145-8-2005 "Gas Analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Diffusion method" shows designs of diffusion tubes/cells that are clearly very difficult to fill. Tracer Measurement Systems has developed a new design of uniquely identifiable, laser-engraved, refillable and re-useable diffusion tubes (see Journal of Environmental Monitoring, 2009, 11, 1543-4) which is much easier to fill and use than the design shown in ISO 6145-8-2005. 

A novel method of use of these Tracer Cert® diffusion tubes at -21°C in a new Tracer Cert® Sub-ambient Thermostat™ for the dynamic generation of oxygen-sensitive VVOCs, isoprene and acetaldehyde, in an oxygen-free nitrogen carrier gas flow at ppb(v/v) concentrations is described and the results of the calibrations of the diffusion tubes are shown. This method can be widely applied to the dynamic generation of trace standards of oxygen-sensitive VVOCs in the ppm(v/v) to sub-ppb(v/v) concentration range.


Digital Edition

Petro Industry News Buyers Guide 2018

January 2018

A Comprehensive Bibliography of Who’s Who in the Petrochemical, Hydrocarbon and Oil related industries Fuel for Thought - Endress+Hauser Acquires Blue Ocean Nova - Analytik Jena and BAM Ag...

View all digital editions

Events

International Petroleum Week

Feb 20 2018 London, UK

Refining & Petro Chemicals 2018

Feb 21 2018 Mumbai, India

PITTCON 2018

Feb 26 2018 Orlando, Fl, USA

Iraq Petroleum 2018

Feb 27 2018 Berlin, Germany

EKOTECH

Feb 28 2018 Targi Kielce, Poland

View all events