22 909 UV Digester – Get Rid of Organic Matter in your Samples Fast
Metrohm presents the 909 UV Digester, a new digestion unit for sample preparation by UV photolysis. The 909 UV Digester enables simultaneous digestion of up to 12 samples and excels by its robust design and short digestions times. It is recommeded for voltammetric and spectroscopic methods, where organic matter present in the sample interferes with the determination of the heavy metal analytes.
Digestion of samples in the 909 UV Digester is fully automatic. The centerpiece of the digester is a UV lamp that provides the necessary UV radiation. The heat generated by the lamp is dissipated via an air-cooling system. To ensure that digestion takes place under controlled conditions, a Pt1000 temperature sensor is used to measure the digestion temperature in a reference sample. An integral microprocessor controls the digestion temperature and the digestion time.
Standards that recommend sample preparation by UV photolysis include: • DIN 38406, Part 16: Determination of zinc, cadmium, lead, copper, thallium, nickel, cobalt by voltammetry • DIN 38406, Part 17: Determination of uranium – Method using adsorptive stripping voltammetry in surface water, raw water and drinking water
UV digestion is suitable for transparent samples with low-to-medium organic contamination (up to approx. 100 mg carbon/L). The classical application field for UV digestion is processing of all types of water samples, e.g. surface waters or wastewaters. However, liquid biological samples (e.g. urine) or foods (e.g. juices and alcoholic beverages) too can be digested using an adapted procedure.
MORE INFO. 37
Near-Infrared Spectroscopy (NIRS): Metrohm Publishes New Application Notes
Metrohm publishes 9 new Application Notes (ANs) on near-infrared analysis of various matrices for key-information (qualitative and quantitative). The new applications are freely available from the Metrohm homepage.
The new ANs are:
AN-NIR-001Determination of active ingredients in solid (pharmaceutical) dosage forms utilising solid-state standard additions
AN-NIR-002Nondestructive, single tablet analysis using the NIRS XDS RapidContent Analyzer
AN-NIR-003Analysis of copolymer levels in polymer pellets by near-infrared spectroscopy AN-NIR-004Determination of additives in polymer pellets by near-infrared spectroscopy AN-NIR-005Determination of finish on nylon fibres by near-infrared spectroscopy AN-NIR-006Near-infrared analysis of polyols AN-NIR-007 Near-infrared analysis of polyols: process monitoring in a hostile environment AN-NIR-008Analysis of lignin in wood pulp
AN-NIR-009Determination of hardwood/softwood content in wood products by near-infrared spectroscopy
MORE INFO. 38 Metrohm Publishes New Brochure «Environmental Analysis» Environmental analysis
Metrohm has published a new brochure summarising the company’s comprehensive offer for environmental analysis. Combining advanced instrumentation and application know-how, Metrohm provides solutions for the entire field of environmental analysis, i.e., water, soil, and air. Moreover, the brochure includes information on relevant norms and standard methods (ISO, DIN, EPA, ASTM) and is a valuable tool for anyone who wants to get a quick overview of the state-of-the-art of the discipline. «Environmental analysis» is free of charge and is available from the company’s webpage
environment.metrohm.com.
Quality control of water, soil, and air
As the global population and economy continue to grow, the impact on the environment becomes ever more evident. Thus, environmental monitoring and analysis have become essential for governments and private companies alike in their effort to curb pollution and to protect and manage precious natural resources.
Metrohm supports this effort with comprehensive solutions enabling users to detect and quantify constituents and contaminants (anions and cations) with utmost precision down to trace levels in virtually any matrix, ranging from water to soil to aerosols and gases.
«Environmental analysis» is structured in three major chapters dealing with water, soil, and air analysis, respectively. Important standard methods are described for each of them, including hyphenated solutions such as IC/MS and IC-ICP/MS. Other methods described are titration, pH measurement and conductivity measurement, ion chromatography (IC), and voltammetry. The brochure goes beyond methods to monitor contaminants including new approaches to actually clean up contaminated soil by means of electrochemical decontamination and new methods being developed to use atmospheric CO2 and synthesise other valuable compounds from it.
MORE INFO. 40
NIR Spectroscopy – A Guide to Near-Infrared Spectroscopic Analysis of Industrial Manufacturing Processes
Metrohm is proud to present its latest monograph, a practical guide to near- infrared spectroscopic analysis in manufacturing processes. The new monograph covers all aspects of NIR Spectroscopy starting from a summary of theory of vibrational spectroscopy and ending with an overview of industrial applications, a glossary, and references to additional literature. The new monograph is free and can be downloaded from the company’s website.
The scope of the new Metrohm monograph on NIR spectroscopy (44 pages) is described best by the table of contents:
• Theory of vibrational spectroscopy • NIRS, MIR, and Raman • Chemometrics • NIR spectral region • NIR analysis methods • NIR instrumentation • NIR analysis strategies
• Industry sectors and applications • Standards
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