Environmental Analysis & Electrochemistry


New Mass Spectral Library Designed to Streamline Environmental Analyses Laboratories analysing environmental, clinical research/


toxicological, and food samples have a powerful new data tool expected to save time and money while identifying compounds with high levels of confidence.


Thermo Fisher Scientific announced its high resolution accurate mass (HRAM) spectral library at the 62nd ASMS Conference on Mass Spectrometry and Allied Topics.


“This is a true library with full, high-resolution spectra for every compound it contains,” said Jennifer Massi, Program Manager, Environmental and Food Safety for Thermo Fisher Scientific. “In fact, we ran multiple MS/ MS spectra for each compound, and each was analysed at multiple collision energies. This is designed to enhance method flexibility and confidence in results.”


The library was generated using the Thermo Scientific Q Exactive liquid chromatography-mass spectrometry (LC-MS) system at 140,000 resolution to minimise false positives and negatives as well as matrix interference. Spectra are searchable using Thermo Scientific TraceFinder software. The library contains compounds for environmental and food safety analysis that include: pesticides, mycotoxins, veterinary drugs, perfluorinated chemicals (PFCs) and other environmental contaminants. For clinical/toxicological research, it contains spectra for therapeutic and prescription drugs, illegal drugs and toxins.


The library is designed to help customers save time in method development by using defined retention times, and by searching the five most intense ions. Customers can save money because the library reduces the need to purchase standards to set up new libraries. Method development flexibility is enhanced because spectra are generated at multiple collision energies per compound.


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Determining the Value of Waste Materials as Fuel Feedstock Exeter Analytical Inc has announced how their Model 440 CHN Elemental Analyzer is being widely used to determine the suitability of a waste material for use as a fuel in waste to energy plants.


Key to assessing the value of a waste material as a potential fuel feedstock is in determining its Carbon (C) and Hydrogen (H) content. The Carbon concentration when measured in conjunction with calorific value gives a measure of the energy content and therefore the usefulness of the waste sample as a renewable energy source. The Hydrogen concentration is another key parameter to be measured and is used to calculate the samples net calorific value.


Using an Exeter Analytical Model 440 Elemental Analyzer the percentage Carbon, Hydrogen and Nitrogen in a waste sample, which relates directly to its energy content, can be accurately determined in as little as 5 minutes.


The Exeter Analytical Model 440 is a static combustion CHN Elemental Analyzer, with a unique horizontal furnace design, which enables easy removal of sample residue between each waste material analysis. This is particularly important with waste materials that typically produce a considerable amount of uncombusted residue (metals, inorganic fillers etc) after each analysis. Using an Exeter Analytical Model 440 one combustion tube will analyse in excess of 1000 waste samples without the need for removal and cleaning. By comparison other elemental analysers, employing vertical furnace designs, will require cleaning after as little as 20 samples. The gas flow characteristics of the Model 440 Analyzer are superior to other elemental analysers due to the effective elimination of troublesome residue build-up. This thereby provides longer-term calibration stability as well as enhanced accuracy and precision for measured waste sample data.


In addition, as the Model 440 provides complete control over combustion parameters it is able to reproducibly achieve 100% combustion with the widest range of waste samples.


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The Right Injection Technique makes all the Difference for Precise TOC Analysis


For TOC analysis of particle containing samples the multi N/C® series from Analytik Jena AG offers the direct injection system and wastewater specialist multi N/C® 2100 or the all-rounder multi N/C® 3100. By direct injection the sample is drawn up directly into a micro litre syringe and introduced into the combustion system, without tubing and valve. The wide-bore needle and the septum-free injection head ensure the optimum particle handling capability and leak-free continuous operation.


The all-rounder multi N/C® 3100 brings highest sample throughput. This flow injection system guarantees robust, representative sample transfer by large inner tubing diameters. The back-rinse technique prevents blockages. Teflon wear in the dosing syringe is prevented. Inside the dosing valve the approved and robust ceramic technique is used. Thus, the highest operation standard in terms of particle handling, productivity and low wear is realised.


The multi N/C® is perfect for environmental analysis. 30632pr@reply-direct.com


New Generation of Meters for pH and Conductivity Measurement


Metrohm presents the 912 Conductometer, the 913 pH Meter and the 914 pH/Conductometer, a new generation of meters for pH and conductivity measurement. The new meters are every inch ‘Metrohm’, robust, reliable, and remarkably simple to use.


The new Metrohm meters are two in one: precision instruments for the laboratory and robust companions for mobile use in the field and the process. During field use the new meters are powered by batteries. Afterwards, they can be recharged, even on the road on the cigarette lighter with the use of an adapter.


Two-in-one applies to the performance of the new meters, too: parallel measurement of pH and conductivity with the 914 pH/Conductometer; parallel recording of two pH values with the 913 pH Meter. Both versions indicate the temperature(s) of the sample(s). The 912 Conductometer measures the conductivity, salinity and temperature of the sample. Ergonomic design makes sure the new meters fit comfortably in one hand. Each key on the clearly organised user interface comes with a secure pressure point. Hence, the meters can be operated intuitively with one‘s left or right thumb while the one‘s other hand remains free to hold the electrode(s) in the medium in which the measurement is done.


The new Metrohm meters wouldn’t be Metrohm, if they weren’t extremely robust: all three versions meet the requirements of IP67. Back in the office the meter is simply plugged in at the USB port of the PC and the collected data is exported straight to the LIMS or Excel or can be managed in tiBase, the Metrohm titration software.


31235pr@reply-direct.com New Combined Professional pH Meter and Thermometer Introduced


The new 8100 Plus pH meter kit from Electronic Temperature Instruments Ltd is supplied with everything you need to take pH and temperature measurements either in the laboratory or in the field. The 8100 Plus pH kit is specifically designed for maximum portability, and includes a pH electrode and temperature probe.


With the 8100 Plus pH meter you can test the pH directly, but for a higher degrees of accuracy, or for hard or dry materials where the electrode may be damaged, preparation of a diluted sample is recommended.


The 8100 Plus pH meter incorporates a clear custom LCD that shows the pH value from -2 to 16 pH with a 0.01 resolution, and displays the temperature over the range -39.9 to 149.9°C. With a menu-driven custom microprocessor, the user is helped with clear prompts during operation and calibration. The unit comes with everything needed to test the pH or temperature, including a rugged carrying case to make your pH kit fully transportable.


The 8100 Plus pH meter housing has an integrated rubber seal to ensure complete water resistance and helps to reduce the possibility of damage in harsh environments. At the touch of a button, the instrument will automatically re-calibrate (2 point autocal) itself when used in conjunction with pH buffer solutions.


The 8100 Plus pH meter kit is competitively priced at £120.00 exclusive of VAT and available direct from www.etiltd.com ordering code 225-085. 30287pr@reply-direct.com


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