P
S Analytical are experts in the determination and speciation
of mercury, arsenic selenium and the hydride forming elements.
We
supply dedicated laboratory and online analysis systems for total mercury
and mercury speciation, as well as providing contract analytical services
to clients
worldwide.
Mercury
Mercury can be found throughout the environment at trace and ultra trace levels. Mercury is extremely toxic and damaging to human health.
Visit our all about mercury page for general information on mercury, its properties, and how it impacts on the environment.
Mercury in Water and Soils and other media
The two corner stones of P S Analytical's product range for mercury determination are the Millennium Merlin and the Sir Galahad. The Sir Galahad is typically used for gaseous applications such as stack gas, natural gas and air, whilst the Millennium Merlin is used for liquid and soild samples.
There are 3 main versions of the Millennium Merlin. The Millennium Merlin is the most commonly sold system, it has a sub ppt detection limit and utilises atomic fluorescence as a detection technique. The Millennium Merlin is linear to 10ppm. Typical applications include environmental samples such as ground water, drinking water, food stuffs (e.g. milk, fish & tea), soils & sludges, biological samples (e.g. urine, blood and hair), industrial samples such as effluent, aluminium, zinc electrolytes, paper, incineration ash, sodium hypocholite, caustic soda, fly ash, sulfur, brine and petrochemical chemical samples including; naphthas, crude oil, condensates, formation waters and other petrochemcial products.
For customers who need to detect even lower levels of Hg then the Millennium Merlin 1631 is commonly utilised. This system is also based on vapour generation and atomic fluorescence techniques An additional amalgamation step reduces the detection levels still further. The Millennium Merlin 1631 can run the same applications as the Millennium Merlin but is typically used for water samples where a detection limit below 0.05ppt is required.
The Millennium Merlin AAS is used where customers are required to run older, AAS based methods for mercury. Because the system uses atomic absorption as a detector and the sensitivity and linearity not as good as obtained with the AFS based systems.
For
information on our Millennium Merlin system for laboratory determination of mercury in
solids, liquids and gaseous samples please click
here.
Methodology
There are many international methods available for the determination of mercury and PSA has equipment to comply to many of them.
The Millennium Merlin models available based on AFS are compliant with the following methods:
EPA 245.7, EPA 1631, EPA 7474,and ISO 13506
The Millennium Merlin models based on AAS are compliant with
EPA 245.1, EPA 245.2, EPA 7470 and EPA 7471
The Sir Galahad is compliant with
ISO 6978-2:2003 and ASTM 6350
Visit our methods page for more details of these requirements.
For further information visit our application notes page for a list of published applications. If you require additional or information on a specific applications please complete our information request form.
Mercury in Gas
The 10.525 Sir Galahad is routinely used for the determination in gaseous samples such as air, natural gas, LNG. LPG, Stack Gas, Syn Gas and many other gas mixtures. The system is extremely sensitive and easy to use.
For
information on our Sir Galahad systems for Hg in gases please click
here.
Mercury Speciation
Speciation is important to monitor levels of individual species as the toxicity of certain elements depends very heavily on their physico-chemical form. For mercury PSA have developed by LC and GC based systems to perform these measurements.
For
information on mercury speciation please click
here
 
Online Mercury
PSA have used the AFS technology in the Millennium Merlin and Sir Galahad to create online systems for the determination of Hg in a range of liquid and gaseous samples, typical sample types include water, effluent, caustic soda, sulfuric acid, natural gas, LNG, LPG, Stack Gas, Syngas and process gas
For
online determination of mercury in liquid samples please click
here
For online
determination of mercury in gaseous samples please click
here
Consultancy/Contract Analysis
P S Analytical are experts in the determination and speciation of mercury and the hydride forming elements. We undertake specialist contract analysis of samples containing As, Se, Sb, Te, Bi and Hg measuring totals and species. For more information visit our consultancy pages.
For further information please complete the Information Request Form.
For
any other enquiries please visit our site
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