Environmental Analysis & Electrochemistry


Analytical Determination of Mercury, Arsenic and Selenium from Environmental, Petrochemical and Industrial Samples


Environmental contamination with mercury (Hg), arsenic (As) and selenium (Se) can occur from industrial emissions as well as runoff from mining, landfill and agricultural activities. Naturally occurring weathering and cycling processes also have a significant effect on environmental concentration.


Hg, As & Se exist in a variety of chemical forms or species, which have great influence on their transport, bioaccumulation and toxicity. One analytical challenge is that often these species are present in ultra trace concentrations. Recent environmental guidelines and accepted methods concerning monitoring, removal, and effluent discharge have continued to become more stringent, and this trend is sure to continue.


The ability to determine these elements, in their total and/or speciated forms, at environmental concentrations has established P S Analytical (PSA) as the brand of choice for over 30 years. Understanding the fate and transportation particular elements is vitally important and requires accurate analytical measurements and PSA has been at the forefront of instrument design and method development to address these requirements.


PSA employs Atomic Fluorescence Spectrometry (AFS) as a means of analytical detection.Employing AFS enables outstanding detection performance in terms of; sensitivity, linear working ranges, as well as freedom from polyatomic interferences. Coupled with this leading performance are the renowned PSA attributes of ease-of-use, reliability and robustness as well as very affordable system and running costs, all of which are hallmarks of the brand.


With literally thousands of systems in the field today (both laboratory based and on-line analysers) and with support networks in Europe, USA and SE Asia, PSA offers the ideal package of performance, reliability and support.


33003pr@reply-direct.com Brochure Presents Market-leading Instrumentation for Environmental Measurements, Monitoring and Analysis


Labcell is offering a brochure for the extensive Decagon Devices range of market-leading sensors and systems for environmental measurements, monitoring and analysis. The fully illustrated A4 guide is packed with detailed data to help users identify the optimum products for any given application. Decagon Devices instrumentation has a reputation for being high-quality yet cost-effective.


At the front there are new and recently introduced instruments. These include a dual-head infiltrometer, sonic anemometer, the TrueDry CV9 multi-sample moisture content analyser, an infrared thermometer and sensors for measuring soil moisture, water potential, soil temperature and vegetation indices.


A useful table illustrates the full range of soil moisture sensors so customers can select the models with the measurement range, accuracy and other features necessary for their applications. This table also highlights the benefits of each sensor. Further pages in the brochure present information relating to canopy sensors, environmental sensors, hydrology sensors, the WP4C water potential analyser and the VSA (Vapor Sorption Analyzer).


For users interested in modelling, measuring and analysing heat movement, the KD2 Pro Thermal Properties Analyzer connects to four interchangeable sensors that measure thermal conductivity, thermal diffusivity and specific heat (heat capacity). Furthermore, the KD2 Pro benefits from onboard data storage and a facility for downloading data.


Almost any of the sensors shown in the brochure can be used in conjunction with the data loggers that are also included. These range from the simple, low-cost Em5b five-channel analogue mini-logger to the highly sophisticated Em50G automatic logger that connects wirelessly to the Decagon data server for storing large volumes of data, which is ideal for large and small-scale studies where remote access to data by one or more individuals is advantageous. The brochure also shows the DataTrac 3 software for organising, storing and visualising data, and the ProCheck handheld device for making measurements at any location and for checking the quality of each sensor’s installation.


Labcell can supply all of the products on short lead times and in most cases demonstration units are available. In addition, Labcell provides pre- and post-sales service and support from its base in Hampshire. Copies of the brochure are available free of charge by visiting www.labcell.com.


43068pr@reply-direct.com New Portable Analyser Allows Heavy Metal Analysis to go Mobile


Metrohm is pleased to introduce the 946 Portable VA Analyser, a compact, portable, all-in-one solution for heavy metal analysis of surface waters. Measurements with the 946 Portable VA are sensitive enough to detect trace level concentrations of total arsenic, mercury, and copper well below the limit values defined by law in many countries, among them the US and the member States of the EU.


For lack of viable alternatives, trace level quantification of heavy metals have usually been performed in the laboratory using high-end techniques such as, e.g., IC-ICP/MS. The 946 Portable VA on the other hand not only frees the analysis from the lab but is also much less expensive than competing technology and also enables users to discriminate between species of heavy metals such as the highly toxic As(III) and the less toxic As(V).


Handling the 946 Portable is straightforward and measurements take only a couple of minutes providing matching the results produced in the laboratory in every regard, be it sensitivity, accuracy, or reproducibility.


At the heart of the measuring stand is a unique, disposable sensor (the scTRACE Gold), which can be easily exchanged due to a clever plug-in design. The complete set-up with measuring stand, accessories, and bottles comes in a portable carrying case. 43719pr@reply-direct.com


The Spotlight could be on you!


Contact Gwyneth Astles on +44 (0)1727 855574 or email:


gwyneth@intlabmate.com


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