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Determination of Total Mercury in Environmental Samples


How Direct Mercury Analysers can Improve Throughput of Mercury Analysis


The analysis of mercury has always been troublesome for chemists due to its high volatility, high abundance in the environment and its varying concentrations from matrix to matrix. Therefore a robust procedure is required to ensure full recovery and reproducibility of this very important element.


The DMA range of direct mercury analysers from Milestone, are helping laboratories to optimise their mercury analysis processes. The DMA-1 is a manual single analysis system that is designed for laboratories with low sample throughput. The DMA-80 is an automatic sample analyser with capacity for 40 samples capable of ppt detection limits, whilst the DMA- WR offers extended range for high sample concentrations up to 300ppm.


Mercury is an extremely hazardous environmental pollutant and exists in a large number of physical and chemical forms. For example, in sediments methylmercury is present in greater concentrations than other organic forms and the potentially less toxic inorganic compounds. As all forms of mercury are poisonous, it is therefore important to determine the total mercury in such samples.


The Milestone DMA range of mercury analysers from Analytix provide accurate and low level measurements of solids, liquids, and gases in under six minutes without sample digestion or wet chemistry before the analysis takes place. Removing the current lengthy sample preparation stage means ease of use, low running costs and no need for hazardous chemicals to purchase, handle and dispose.


An application report highlighting the advantage of this technology in analysing soil, sediment, and waste water samples is available, for more information visit www.analytix.co.uk/sales/ or call 0844 800 4220.


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Fast Mercury Analysis in Food and


Nutraceutical Samples


The systems do not require any sample preparation prior to analysis thus eliminating the risk of mercury loss and cross contamination. This also means ease of use, low running costs, and no need for handling and disposal of hazardous chemicals. In addition they have the advantage of ‘running on air’ that removes the requirement for in- house or bottled gases.


The analysers allow rapid direct mercury analysis of a wide range of sample types such as soils, waters, foods, fuels, polymers, and inorganic samples such as catalysts. They can analyse both solid and liquid samples in under six minutes per sample, with excellent sensitivity. There is also no need to calibrate the instrument every day as the calibration curve can be stable for up to several months that greatly simplifies routine analyses.


The DMA-1 and DMA-80 have been used to develop the US EPA method 7473. They are also compliant with ASTM D-6722-01 and ASTM D-7623-10.


For more information visit www.analytix.co.uk/mercury-analysis or call 0844 800 4220. 41707pr@reply-direct.com


Mercury Analysis in Water and Wastewater Samples


The Milestone FMA-80 is a highly innovative automatic analyser designed for analysing mercury in water, wastewater and sample digests. The system is based on AFS/AAS that allows an extremely wide working range between 0.2 ppt and 250 ppb and provides results in under 2 minutes.


The auto-sampler can be configured to offer 36 or 89 sample positions and uniquely inserts automatic blank wash cycles and reduces the sampling size if the signal is out of range. A single speed variable pump eliminates the need for multi-pump calibration and is used for all reagents and automatically calibrated daily. The miniature gas/liquid separator design reduces reagents consumption to a minimum and a built-in liquid reagent sensor eliminates the risk of wasting samples and the system is configured with a dual gold trap amalgamator as standard.


The FMA-80 is fully compliant to EPA 245.1, 245.2, 245.5, 245.7, 1631, EN 1483, 12338, 13806 and ISO 17852 and optimises the analytical workflow from start to finish, improving analytical data quality whilst reducing the time taken to achieve results.


For further information, visit www.analytix.co.uk/mercury-analysis/ or call +44 (0) 191 519 4504


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When it comes to analysing large volumes of samples in FMCG industries such as foods and nutraceuticals, speed and accuracy are of paramount importance. Direct mercury analysis as described by EPA 7473 is an alternative method to traditional time consuming techniques and requires no sample preparation whilst delivering results in under 6 minutes.


The MiIestone DMA range of systems from Analytix allow mercury analysis in all food samples including cereals, preserves, coffee, dairy, herbs and spices, meat and vegetables. Single shot injector and autosampler systems are available that have the advantage of running on air so no cylinder or house gases are required.


An application report highlighting the advantage of this technology in analysing botanical extracts, vitamins, and dietary supplements is available, for more information visit www.analytix.co.uk/sales/ or call 0844 800 4220.


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Analytix is Celebrating 20 years


About Analytix Analytix Ltd supplies sample preparation and analytical instrumentation for the chemical and life science markets in the UK and Ireland.


Products include analytical pyrolysis systems, microwave digestion, ashing, extraction, and synthesis systems, mercury analysers, micro GC gas analysers, nitric oxide analysers, supercritical fluid extraction systems, and Labtech general laboratory apparatus.


For further information, visit www.analytix.co.uk or call +44 (0) 191 519 4504 41440pr@reply-direct.com


LABMATE UK & IRELAND - OCTOBER/NOVEMBER 2017 - ADVERTORIAL


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