Environmental Analysis & Electrochemistry


Portable Quadrupole Analyser for Environmental Field Studies


The Hiden pQA portable gas analyser is a versatile mass spectrometer and offered with a range of interchangeable sampling inlets to suit a broad application range. MIMS inlets are offered for analysis of dissolved species in ground water, fermentation cultures, soil samples, and general applications where analysis of dissolved species in liquid sample is required.


The system is suited to gas analysis applications, where sample volume is small, and for environmental applications where detection of low concentration levels is required. The pQA system has a mass range of 200 amu and sub ppb detection levels. Extended mass range to 300amu is optional.


The system is supplied in a Pelican® case and can be powered by a 12 V supply for fi eld use, battery and/or solar powered, or a 220 V supply for laboratory use.


Sampling inlet systems are offered for a broad application range including: Direct membrane inlet probe for immersion and/or insertion in liquid or sludge sample, soil core sampling for example; Recirculating probe for analysis of sample with continuous fl ow, extracted sea or estuary water for example; Flow through probe, low fl ow design for denitrifi cation studies.


The system includes: Quadrupole mass spectrometer system from the RGA series with mass range options 200 amu; Mass spectrometer analyser manifold and UHV pump set with a manually valved dissolved species probe with silicone rubber membrane; Ion Gauge and interlocks to provide protection for the mass spectrometer in case of over pressure; fast acting shut off valve between the dissolved species probe and mass spectrometer manifold to protect the mass spectrometer in case of membrane failure - the valve is interlocked with the integral UHV pressure gauge; supplied in a ruggedised Pelican case for usability in the fi eld; can be powered by a 12 V supply, from a vehicle power outlet, for example as well as a standard power outlet for laboratory use; total weight is less than 40 kg.


More information online: ilmt.co/PL/ZpJv 54035pr@reply-direct.com Adsorbable Organically Bound Halogens Analysis as per new DIN 38409-59


DIN has published method 38409-59 describing the determination of adsorbable organically bound halogens by combustion ion chromatography (CIC) in different water samples. AOX and AOF analysis according to the new standard is performed in two steps, preconcentration of the adsorbable organic halogens on activated carbon, followed by direct combustion and subsequent ion chromatographic (CIC) analysis. Metrohm’s blog article describes the new method and its application for the analysis of AOF, which provides a fast and economical solution for non-targeted PFASs screening.


Organohalogen compounds are widespread, persistent, and potentially toxic for humans and the environment. However, the techniques commonly used to monitor adsorbable organic halogens (AOX) can only determine the sum of organically bound chlorine, bromine, and iodine. These techniques do not provide individual results for AOCl, AOBr, and AOI, respectively, nor on the organofluorine (AOF) content.


DIN method 38409-59 describes a validated method for comprehensive AOX analysis including AOF by CIC. Analysis by CIC allows the determination of the sum parameter as well as the individual concentrations of adsorbable organically bound fluorine, chlorine, bromine, and iodine in different waters.


Advantages of the new standard method: selective determination of AOF, AOCl, AOBr, and AOI in waters; AOF as fast non-targeted screening for PFASs; efficient and low-maintenance AOX determination; easy-to-use, robust, and efficient.


Further details about the application can be found in the following Application Note and White Paper: Application Note AN-CIC-033 – Monitoring PFASs in water sources: Non-targeted adsorbable organic fluorine (AOF) analysis by CIC: ilmt.co/PL/XAMQ White Paper WP-078 – Adsorbable organic fluorine (AOF) – a sum parameter for non-targeted screening of per- and polyfluorinated alkyl substances (PFASs) in waters: ilmt.co/PL/8jVp More information online: ilmt.co/PL/678b


59667pr@reply-direct.com Revolutionising Turbidity Measurement with Precision and Ease


The everyday challenges of turbidity measurement, such as inaccuracies due to stray light, complicated handling, and time-consuming calibration, are now eliminated with the new Lovibond® TB350. The TB350 is the most advanced portable turbidimeter on the market with brand-new technology, unprecedented measuring range and unsurpassed accuracy.


Multipath 90° BLAC® is the new, patented sensor technology, making the TB350 the most versatile turbidimeter combining laboratory accuracy in a portable instrument. The new technology ensures the highest accuracy is guaranteed in the lower turbidity range from 0.01NTU and maintains the outstanding precision level in the highest turbidity range up to 4,000 NTU.


The recently developed optical system works with two ingeniously arranged 90° detectors and thus ensures a purely nephelometric measuring principle. During the turbidity measurement, two different path lengths of the incident light beam through the sample are cleverly exploited. Various particle sizes and shapes are detected with the highest measurement accuracy even where the particle size distribution deviates from the calibration standard.


The novel BLAC® technology stands for Backscattered Light Absorbing Cavity. The light-absorbing trap almost eliminates unwanted stray light and provides extremely accurate results for low turbidity down to 0.01NTU.


The new sensor technology was specifically designed by a team of world-renowned turbidity experts to solve common user problems in turbidity measurement. With intuitive colour touch screen and straightforward data management protocols ensure easy handling. A customised measuring mode for fast-settling particles, the “Fast Settling Mode”, complements the outstanding instrument performance increasing the accuracy of the turbidity reading for large and heavy particles from 20 NTU, but especially in the high measuring range of up to 4,000 NTU.


The TB350 makes calibration and verification procedures, which are otherwise quite complicated in turbidity measurement, easier than ever before. Formazin-based T-CAL® primary solutions are safely sealed in airtight vials and can be used immediately.


More information online: ilmt.co/PL/vAEV 60571pr@reply-direct.com


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