P S Analytical analysers generally utilise Atomic Fluorescence Spectroscopy (AFS) which offers many advantages over techniques for the determination of mercury and the hydride forming elements including better sensitivity, selectivity and linearity.

For AFS details and user benefits - click here.

Where regulations demand however systems for Mercury analysis based on Atomic Absorption Spectroscopy are available.

Some common standard methods employing CV-AAS are described in the table below;

US-EPA Method 245.1

Determination of Mercury in Water by CV-AAS

US-EPA Method 245.2

Mercury (Automated CV-AAS)

US-EPA Method 245.5

Mercury in Sediments by Manual CV-AAS

US-EPA Method 245.6

Mercury in Tissues by CV-AAS

US-EPA Method 7470A

Mercury in Liquid Waste (Manual CV-AAS)

US-EPA Method 7471A/B

Mercury in Solid or Semi-solid Wastes (Manual CV-AAS)

APHA Method 3112B

Cold-Vapour Atomic Absorption Spectrometry Method

PSA 10.045 Millennium Merlin AAS Cold Vapour Method

P S Analytical offer the Millennium Merlin 10.045 Analyser with the following product specifications;

  • Limit of Detection 20 ppt (without pre-concentration)

  • Linear Dynamic Range 20 ppt to 100 ppb in continuous mode

  • Sample Throughput up to 60 Samples per hour

  • Autosampler up to 200 samples, random access (4 versions available)

  • The system is controlled by the PSA Millennium Software and forms part of a fully automated system with the addition of one of the PSA Autosamplers


For further details on the Millennium Merlin AAS Cold Vapour Method - click here.


The best of both worlds CV-AFS/AAS Millennium Merlin 10.036

The Millennium Merlin 10.036 includes both AAS+ AFS+ 1631 system for low level mercury determination, supplied ready to run and includes atomic fluorescence detector, atomic absorption detector, vapour generator, gold amalgamation pre-concentrator integrated perma-pure dryer system, millennium windows software, interface cables, installation kit, consumables kit and user manuals.