Innovative Technology For Trace Organic Analysis
TEL: +44 (0)1443 230 935
Mobile Menu

HS-TD technology for the routine detection of ppt level odorants in drinking water

Thursday, 20 September 2007 at 11:10:AM

Technical Note (TDTS) # 78 & Product Brochure (HS-TD)

Markes International announces routine detection of ppt level geosmin, methyl-i-borneol and other odorants in drinking water using its new expanded range of equilibrium headspace - thermal desorption (HS-TD) technology.
Designed to integrate with several leading brands of HS systems, the Markes HS-TD system integrates two of the most important GC sample introduction techniques – equilibrium headspace (HS) and thermal desorption (TD). HS-TD opens up new possibilities to users who need enhanced sensitivity for HS applications and/or require a versatile sample introduction system capable of dealing with any matrix: Solid, liquid or gas.

HS-TD incorporates the Markes UNITY thermal desorber, with its market leading trapping technology and pioneering quantitative sample re-collection facility. The combined system offers three modes of operation:

  • Automated HS-trap – offering enhanced sensitivity and a wider volatility range than conventional headspace and without the foaming and complexity of purge-and-trap
  • Method-compliant analytical thermal desorption (TD)
  • Conventional automated equilibrium headspace (HS)

Data are presented in a new Markes technical publication, TDTS78. Low ppt levels of geosmin, methyl-i-borneol and other odorants in drinking water were detected using headspace–thermal desorption (HS-TD). This shows robust routine operation of the HS-TD system for monitoring key odour compounds such as geosmin and methyl-i-borneol, down to 1 ppt levels in drinking water. This is 10x lower than the olfactory threshold. At a time when drinking water quality is increasingly important due to water shortages around the world, this application will be of interest to every drinking water laboratory.

Markes International Ltd
Gwaun Elai Medi-Science Campus
Tel: +44 (0)1443 230935
Markes International GmbH
Bieberer Straße 1-7
63065 Offenbach am Main
Tel: +49 (0)69 6681089-10
USA (West)
Markes International, Inc.
2355 Gold Meadow Way
Gold River, Sacramento
California 95670
Tel: +1 866-483-5684 (toll-free)
Markes Instruments (Shanghai) Co., Ltd
Unit 1002, Building 1
No.418, Guilin Road
Shanghai 200233
P.R. China
Tel: +86 21 5465 1216
Part of Schauenburg International

Hello, how can we help you today?