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Total cyanide measurement of wastewater samples by a UV digestion and gas diffusion technique coupled


with amperometric detection Cyanide (CN -) is a highly poisonous ion that binds with the enzyme cytochrome C oxidase. This complex inhibits cellular respiration and energy production, resulting in cytotoxic hypoxia affecting the central nervous system (CNS) and heart. Death typically occurs from respiratory arrest following CNS failure.


Systea’s FLOWSYS III System from Lab Solutions measures total cyanide by a UV digestion and gas diffusion technique coupled with amperometric detection in accordance with ASTM Method D 7511-09e2.


This non-distillation technique is particularly effective for applications where thiocyanate is present to avoid cyanide loss or positive interference. ASTM D 7511-09e2 is USEPA-approved for analysis of wastewater samples for NPDES compliance reporting.


Lab Solutions’ website provides updated information on collecting and preserving samples, analytical interferences, and new ASTM and USEPA analytical methods.


Cyanide compounds are used in a wide range of industrial applications. Hydrogen cyanide is used in the production of nylon 6/6 and methyl methacrylate plastics. Potassium or sodium cyanide are used in mining operations to leach gold from ore. Cyanide salts are used in metal plating baths for electroplating of brass, bronze, cadmium, copper, gold, silver and zinc. Other industrial processes employing cyanide include; petroleum refi ning, steel production, microelectronics manufacturing, specialty chemical and pharmaceutical production. The acute toxicity and wide spread industrial usage of cyanide makes environmental testing critically important. Intentional contamination of drinking water or food products with cyanide is also a potential domestic security threat.


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Paul Firth, Process Group Offi cer, has been involved with the Source Testing Association (STA) for over 16 Years, participating in general meetings, sub groups and collaborating with other members, to share, discuss and investigate all aspects of emission monitoring.


The Process Operators Task Group main aim is to cover many aspects of emission testing, including reviewing the latest developments of the MCERTS scheme, sharing experiences from the Environment Agency (EA) Operator Monitoring Assessments (OMA), assessing various continuous emission monitoring (CEM) equipment and abatement technologies, providing support in reviewing and generating STA and EA guidance notes.


The group was predominately set up to help improve the knowledge and understanding on monitoring aspects and to cover changes in legislation. Around 2004 this included the Waste Incineration Directive, which has now been recast with 6 other directives into the Industrial Emissions Directive. Operators had the opportunity to speak with one voice, look for answers to monitoring problems, including how to measure and calibrate at lower emission limit values and be part of a collective group that included instrument suppliers, regulators, accredited testing and laboratory organisations, this approach really helps to deliver a consensus agreement, especially when developing new UK guidance and standards.


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Rediscover the great indoors with the TSI AirAssure™ Indoor Air Quality Monitor


When we’re together in the same place, amazing things happen — collaboration, creativity, and innovation. Rising pollution levels and the global pandemic have us more aware of the quality of our indoor air. As we plan for more indoor gatherings in offi ce buildings, shopping malls, conference centers, healthcare settings and manufacturing plants, it’s important to have confi dence in your air quality, to ultimately help get people back inside.


TSI Incorporated, the global leader in performance measurement solutions, is proud to introduce the TSI AirAssure™ Indoor Air Quality (IAQ) Monitor. With the AirAssure™ IAQ Monitor, you don’t have to wonder about the state of your indoor air quality. This real-time, low-cost solution monitors particulate matter (PM), traditional IAQ parameters, and up to six gases.


Designed for commercial buildings, schools, medical offi ce buildings, hotels, manufacturing plants – any indoor setting people are gathering – this monitor will allow you to view, analyze and share actionable data all within the TSI Link™ cloud solution.


“We’re very excited about the launch of our new AirAssure™ Indoor Air Quality Monitor,” said Jacky Schmit, Market Development Director at TSI. “These monitors will help public spaces confi dently welcome people back indoors, so we can get back to working, collaborating and enjoying each other’s company inside.”


Learn more about how the AirAssure™ IAQ Monitor offers an easy way to begin using real-time indoor air quality monitoring within your facilities.


More information online: ilmt.co/PL/degX


TSI Instruments Ltd., Stirling Road, Cressex Business Park, High Wycombe, Buckinghamshire, HP12 3ST, United Kingdom, Tel: +44 (0) 149 4 459200


WWW.TSI.COM IET SEPTEMBER/OCTOBER 2021 WWW.ENVIROTECH-ONLINE.COM


Typically the group will report any monitoring issues of note, review legislation changes, especially reference document associated emission levels (AEL), highlight future external events and publicity, cover any accredited team items of interest, review any new monitoring technologies, assess aspects of any monitoring standard, including calibration standards like BS EN 14181, review feedback from working groups, which have included dioxin and furan testing, low particulate matter, hydrogen chloride, to name a few.


Since the Source Testing Organisation was established in 1995, the Process Operators Group, in partnership with the other groups have helped to develop technical guidance, set consistent standards, created a knowledge bank of information, improved on-site monitoring Health and Safety, plus covered many other areas of emission monitoring and legislation changes.


Many process operators have operations in all parts of the United Kingdom, the STA provides the opportunity to discuss monitoring topics with all regulators, including the Environment Agency, Natural Resources Wales (NRW), Scottish Environment Protection Agency (SEPA) and Northern Ireland Environment Agency (NIEA), and this helps to provide a consistent approach on monitoring issues and topics.


Members of the process operators group have collaborated with the Mineral Products Association on different projects, one being low particulate matter calibrations, the use of control charts and the compliance approach to take where calibration of particulate CEMS is not viable, in this instance the main aim was to reach a collective agreement between UK regulators and Cement Operators to help identify where the effective calibration of CEM’s for compliance is not possible and provide examples of indicative approaches that can be adopted, the same approach can easily be adopted by other process operators.


More recently with the onset of lower emission limit values (ELV) through the Best Available Techniques (BAT) reference documents for various Industrial Emissions Directives, which affects a large number of process operators, the importance on fi nding new technologies that have measurement ranges certifi ed in accordance with the lower ELV’s is critical for both operators and regulatory authorities.


The STA provides an excellent opportunity to learn about new developments in emission monitoring, participate in focused working groups which are set up to help develop guidance to overcome any monitoring issues, provide feedback on proposed BAT AELs, help to develop new UK guidance and standards. This is even more important as we move more from EU to UK legislation, as part of the exit from the European Union. If you are a process operator and would like more information about joining the process operators group please contact us at www.s-t-a.org we are always looking to share information.


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55692pr@reply-direct.com 54843pr@reply-direct.com Helping process operators with all aspects of emission monitoring


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