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Environmental Laboratory
Mercury, Arsenic and Selenium in Environmental Samples – Experience, Performance, Reliability and Support
New Spectrometers Redefine ED-XRFWith Exceptional New Levels of Elemental Analysis Performance
SPECTRO Analytical Instruments (Germany) today announced its new line of SPECTRO XEPOS spectrometers, representing a quantum leap in energy dispersive X-ray fluorescence (ED-XRF) technology and providing breakthrough advances in the multi-elemental analysis of major, minor, and trace element concentrations.
For more than 30 years P S Analytical (PSA) has been at the forefront of ultra trace determination of mercury (Hg) and the hydride forming elements such as arsenic (As) and selenium (Se) from environmental samples. Understanding the fate and transportation of these elements in environmental matrices is vitally important and this requires accurate analytical measurements of total and speciated analytes.
These elements enter the environment from natural and anthropogenic sources.
The toxicological effects of these elements have long been realised but it has only been recently that there has been an international effort to reduce emissions into the environment. The effective control and reduction of emissions from industry is the ultimate aim and these efforts which need to be accurately monitored.
PSA has analysers based on Atomic Fluorescence Spectrometry (AFS) to determine these elements in environmental samples. PSA also offers online analysers to monitor emissions from industrial sources such as coal fired power stations, incinerators, crematoria, smelters, petrochemical produced water and chlor-alkali facilities.
Employing AFS as a means of detection has many advantages for these determinations. These include; ultra trace limits of detection, a linear response over several orders, and minimised interferences from other matrix components. PSA’s unique flow cell design, removing troublesome glass or quartz material, results in reduced carryover for faster throughput and less re-runs. Ease of use, reliability and robustness as well as very affordable running costs are hallmarks or the PSA brand.
The three corner stones of PSA’s product range for determinations are the Millennium Merlin, the Millennium Excalibur and the Sir Galahad. The Sir Galahad is typically used for the determination of Hg in gaseous applications such as stack gas, natural gas and air, whilst the Millennium Merlin is used for liquid and solid samples and is based upon cold vapour generation. The Millennium Excalibur employs hydride generation chemistry and is ideal for ultra trace determinations of As, Se and the other hydride elements.
Typical applications include environmental samples such as ground water, drinking water, food stuffs (e.g. milk, rice, fish & tea), soils & sludges, clinical samples (e.g. urine, blood and hair), industrial effluents including concentrated acids. 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.
With the coupling of the dedicated speciation modules PSA are able to integrate chromatography and digestion processes to facilitate speciation studies for these elements.
Whether it’s in the supply of standard systems or to producing specialised systems tailored to user’s specific requirements, the results and sensitivity of our instrumentation has forged our place as company of choice in the field of analytical instrumentation. With literally thousands of systems in the field today, and support networks in Europe, USA and SE Asia, PSA offers the ideal package of performance, reliability and support.
For further information visit the PS Analytical website or visit them at Pittcon – Booth 1832.
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• Excellent repeatability • High turn-down ratio • Fast settling time • Platinum-based MEMS
Axetris AG
www.axetris.com
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www.envirotech-online.com
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Phone: +41 41 662 76 76 E-mail:
axetris@axetris.com
New developments in excitation and detection introduced with the new SPECTRO XEPOS ED-XRF spectrometers deliver outstanding sensitivity and detection limits and yield remarkable gains in precision and accuracy. The analysers excel at critical tasks from rapid screening elemental analysis for environmental and waste sampling to demanding applications in research, academia, and geological science. They support precise product quality control at-line for a variety of applications such as chemical and petrochemical production, and the manufacture of cement, cosmetics, food, pharmaceuticals, and more.
Spectacular sensitivity: Innovations in adaptive excitation plus tube and detector technologies that dramatically improve sensitivity — often by 10´ or more — to boost precision, realise significantly lower detection levels, and deliver a fast and accurate analysis of a wide range of elements, from sodium to uranium. Enhanced with new high-count detector and tube designs, new sensitivity, and minimised backgrounds, the new analysers’ proprietary adaptive excitation technology enables exceptionally low limits of detection (LODs) for a wide range of elements.
Unparalleled precision: Unlike most ED-XRF elemental analysers, the X-ray tubes in SPECTRO XEPOS spectrometers remain powered on between measurements to prevent on/off variations from affecting readings. This ensures long-term stability, realises an exceptionally high degree of precision in elemental analysis — up to 3´ better than before, and delivers substantially improved analytical accuracy for concentrations from trace elements to major components.
Faster measurements: For operators who require speed more than utmost precision, SPECTRO XEPOS analyzers can dramatically cut measurement times, while still maintaining precision levels comparable to traditional ED-XRF spectrometers. The system’s high speed helps to achieve analyses of most samples within a few minutes.
Redesigned operating software provides proven ease and power, while the unique new TurboQuant II software quickly and accurately analyses practically any unknown liquid, powder, or solid sample. In addition, the new SPECTRO XEPOS spectrometers exhibit a significantly lower cost of ownership than wavelength dispersive X-ray fluorescence (WD-XRF) spectrometers — thus delivering WD performance at an ED price for many applications.
Optional AMECARE M2M (machine-to-machine) support extends the new analysers’ self- diagnostic functions with proactive alerts, backed up by direct connection with a remote SPECTRO service expert’s PC.
The new line of SPECTRO XEPOS ED-XRF spectrometers is available immediately from SPECTRO Analytical Instruments. Four advanced versions are available, enabling users to prioritise their selection according to measurement speed, ultimate precision, or groups of targeted elements in specific matrices.
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Mass Flow Meters and Controllers Designed for OEM
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