The Environmental Tracers Laboratory (ETL) continues to promote and develop applications for environmentally-friendly and intelligent tracing of environmental and engineering systems, including reaeration work (on the back of 2007 Winner, Outstanding Paper Award, Water & Environment Journal) but particularly for risk-based assessment of water resources supporting integrated and sustainable management. Current ETL facilities include:

· Gas-Chromatograph-Mass Spectrometer (GC-MS) x2.

- a ThermoQuest Voyager (GC 8000 Top series with Voyager quadrupole MS detector) has a 30m PLOT 5A molecular sieve GC column and sub-ambient column temperature control particularly for the analyses down to trace environmental levels of volatile compounds eg noble gases (Ar, Kr, Xe), chlorofluorocarbons (CFCs or freons), and sulfur hexafluoride (SF₆);

- The second instrument is a bespoke GC-MS system from MSS (HP 5890 Series II GC + bespoke quadrupole MSD).

· Perkin-Elmer Sigma 3 GC with a thermal conductivity detector (GC-TCD)

- equipped with CTR-III column for the analysis of major and minor levels of “permanent” gases (eg N₂, Ar, O₂, CO₂);

· Hewlett-Packard 5890 Series II Gas Chromatographs (GC) x2

- equipped, respectively, with a flame ionisation detector (GC-FID) and an Electron Capture Detector (GC-ECD) for trace volatile organic compound (VOC) abundance analyses, including CFC’s and SF₆;

· Perkin-Elmer Wallac Quantulus Ô 1220 advanced, low-level Liquid Scintillation Counter x2.

- these facilities provide for low-level, natural abundance LSC analytical facilities for both a - and b -emitters (eg ²²²Rn,  ³H, ¹⁴C);

· LKB Wallac Model 1217 RackBeta LSC

        - for higher b -activity ³H and ¹⁴C radiometric analyses (eg. for landfill leachate monitoring);

· Pylon Electronics AB-5 (portable a-scintillometer with Lucas scintillation cell)

- for eg ²²²Rn activity determinations in the field;

· GGUN-FLO2 Schnegg fluorimeter

- for field flowthrough and laboratory benchtop analyses of applied dissolved Rhodamine and Uranine fluorescent organo-dyes.

Academic Staff:

Trevor Elliot - Environmental & Intelligent Tracers; Geohydrology; Isotope Hydrology.