[cleanairuk_news] Clean Air Toolkit Briefing #1: Nitrogen Dioxide Gas Diffusion Tubes

Network for Clean Air contact at cleanairuk.org
Wed Jan 23 14:42:09 GMT 2013


*Clean Air Toolkit Briefing #1: Nitrogen Dioxide Gas Diffusion Tubes*

*Introduction to NO2 Gas Diffusion Tubes

If you're not familiar with NO2 gas diffusion tubes then there is a
introduction here: http://care4air.org/yp_measuring_tubes.html

A more comprehensive guide from Defra here:
http://laqm.defra.gov.uk/diffusion-tubes/practical-guidance.html

*Example of projects using NO2 Gas Diffusion Tubes

In Sheffield there has been a community project measuring NO2 using gas
diffusion tubes for over a decade. See:
http://www.sheffieldeastend.org.uk/aqmonitoring.htm and an evaluation
report: http://www.sheffieldeastend.org.uk/BarryFrancisDissertation.pdf

There's a mapping showing NO2 measurements in Sheffield by community
groups and others using NO2 tubes:
http://www.sheffieldairmap.org/index.html

Another organisation, in London, which has assisted with the use of these
gas diffusion tubes is Mapping for Change. See 'Citizen Science used to
Map Community Air Quality':
http://www.mappingforchange.org.uk/portfolio/citizen-science-used-to-monitor-local-air-quality-in-communities-across-london/

*How much do they cost?*

Below is a quote from Environmental Services Group (http://www.esg.co.uk),
a UK based supplier for various quantities of NO2 diffusion tubes. It was
issued 22 January 2013.

Key to data/ headings

Number to be supplied; Period; Method / Instrument (analysis type); UK
accreditation (UKAS) - ISO 17025 (yes/no); Price per tube (ex VAT); Total
Cost (ex VAT)

Data

100 per month; One month; colorimetric; yes; 20 days; £4.00; £400.00

400 per month; One month; colorimetric; yes; 20 days; £3.40; £1,360.00

800 per month; One month; colorimetric; yes; 20 days; £3.20; £2,560.00


Gas Diff. Tube Attachment Accessories (each)

762mm UV-resistant cable tie: £1.00 each (ex VAT)
Push In Clip: £1.25
Suspended Clip: £1.35
Rubber Washer (for use with suspended clip): £0.30







More information about the news mailing list