ENVIRONMENTAL LABORATORY 17


workstreams often cannot deliver the high throughputs needed for continuous or rapid testing to assess infection levels.


Could consolidated, multiparameter, discrete analysis hold the key to effective wastewater surveillance?


Fortunately, next-generation discrete analysers are providing testing laboratories with the solution for high-throughput testing of the entire range of SARS-CoV-2 biomarkers in wastewater samples. With these new technologies, multiple biomarker parameters in water samples can be analysed in one machine quickly and easily using automated methods. These systems were developed specifi cally to increase throughput of sample analysis with high accuracy, and simplifi es the wet chemical analysis to offer fl exibility and effi ciency.


Collected samples can be tested for chemical and population size markers in compliance with internationally approved standard methods, including DIN, ISO and U.S. Environmental Protection Agency (EPA). Using EPA methods, for example, users can measure ammonia levels in a range of 0.01 to 2.0mg/L NH3


.


Coupled to this, some analysers have modules that are able to conduct electrochemical analysis for pH and conductivity in sewage water samples. The benefi t here is that these systems can perform automated analysis of multiple parameters in parallel,


saving valuable time.


Moreover, automated functionality means one operator can run up to 20 parameter tests on a single sample and walk away while these tests are running. Some machines can analyse more than 100 samples and 40 reagents in one run, with up to 350 photometric tests and up to 67 ECM measurements completed in an hour. With this automation, the risk of manual preparation error is removed, while analysis is simplifi ed and accelerated.


In SARS-CoV-2 surveillance, fast, frequent and continuous monitoring of chemical and physiochemical biomarkers is critical to establishing accurate insight. Discrete analysers deliver fast biomarker identifi cation and quantifi cation with the added benefi ts of increased accuracy, reduced labour, fewer reagents and decreased costs.


even when infected individuals are asymptomatic. Moreover, when sampling is performed frequently, this method can track COVID-19 rates long-term.


Traditional wet chemical analysis does not meet the fast and continuous requirements for this surveillance due to large labour, time and cost demands. With consolidated, multiparameter testing, next-generation discrete analysers can provide the fast and accurate biomarker detection and quantifi cation needed to understand population infection rates. By simplifying and automating tests, and producing accurate and reproducible biomarker results, signifi cant savings can be made in labour, time and costs. Together, these benefi ts provide the effective and continuous wastewater surveillance needed to help combat the ongoing COVID-19 pandemic, as well as any potential future pandemics or large-scale infections.


Quick and continuous monitoring will win the fi ght against COVID-19


As governments and public health agencies across the world fi ght to control COVID-19, WBE programmes are forming a large part of the battle plan. RT-qPCR tests, in combination with biomarker surveillance, can detect SARS-CoV-2 and estimate circulation,


References


(1) https://www.cdc.gov/healthywater/surveillance/ wastewater-surveillance/wastewater-surveillance. html?CDC_AA_refVal=https%3A%2F%2Fwww. cdc.gov%2Fcoronavirus%2F2019-ncov%2Fcases- updates%2Fwastewater-surveillance.html


(2) https://ehp.niehs.nih.gov/doi/10.1289/EHP8572


Author Contact Details Hari Narayanan, Product Marketing Manager, Thermo Fisher Scientifi c • Email: hari.narayanan@thermofi sher.com Reg Godwin, Technical Specialist – Chemistry, UK National Laboratory Service • Email: reg.godwin@environment-agency.gov.uk


Hari Narayanan Reg Godwin


Cherry picking 2D barcoded sample tubes


Modelling of Pollutants in Complex Environmental Systems


Environmental modelling has enjoyed a long tradition, but all models have powers and limitations that need to be continually assessed.


Modelling of Pollutants in Complex Environmental Systems includes Volumes I and II and showcases modern environmental modelling methods, the basic theory behind them and their incorporation into complex environmental investigations. It highlights advanced computing technologies and how they have led to unprecedented and adaptive modelling, simulation and decision-support tools to study complex environmental systems, and how they can be applied to current environmental concerns. With chapters contributed by global experts, the book covers different aspects of modelling air, water, soils and biological systems.


Volume ll presents an extended look at environmental modelling research, its applications and presents timely topics and applications of the study of environmental contaminants, with detailed discussions of mathematical concepts used. Five sections cover decision support and assessment modelling; aquatic modelling and uncertainty; soil, sediment and subsurface modelling and pollutant transport; forest ecosystem and footprint modelling; and air quality modelling and sensitivity analysis.


Both volumes are essential reading for researchers in academia, industry and government-related bodies who have a vested interest in all aspects of environmental modelling.


Ziath has posted a new video that shows how its Mohawk semi-automated tube selector is a productive and versatile tool for cherry picking tubes from multiple racks.


In the new video, Product Manager Avash Anderson demonstrates how the Mohawk provides secure and accurate picking of individual 2D-barcoded tubes from 96-place SBS format racks, quickly and easily. Using Ziath’s web based DP5 software, Avash also demonstrates how simple it is to load a picking list, retrieve the desired tubes and then verify them on a connected 2D tube reader.


Trying to extract a single tube from a rack can be diffi cult and doing so manually can lead to positional errors. By using software to control 96 individual solenoids, the Mohawk can lift one, two or up to sixteen individual tubes at a time, making it easy to remove them from the rack and place in a subsidiary rack or other tube device.


The pins to be selected can be set in a ‘Pick List’ which can be generated from the onscreen graphical representation of the Mohawk deck or from an Excel spreadsheet. Able to operate with both thawed and frozen tubes the Mohawk can even generate pick lists including tubes that are contained in multiple racks.


View the new video: ilmt.co/PL/Wo3B More information online: ilmt.co/PL/eJmR


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Digital Laboratory Syringe Pump


with Ultimate Connectivity The new dLSP500 from Premier Control Technologies is essential for the most up-to-date laboratory with superb technology that supports precision dispensing; with functional versatility giving freedom for many applications; all in a highly compact space-saving modern and aesthetically pleasing enclosure. The dLSP500 has a wide overall fl ow range with remarkably steady dosing rates between 0.0007nl/min-57.621ml/min.


Control can be achieved in several ways. Firstly, the user can view and set up all parameters on an easy-to-navigate and intuitive 7” touchscreen display. Secondly, by means of dedicated PC software, the custom programs can be confi gured quickly for more complex multi-step dosing together with multi-mode operation. One computer can control up to 99 pumps. Thirdly, control and monitoring can be achieved via Wifi , Bluetooth and other programs as access is easy from a PC, tablet or smartphone (App).


The very latest technology ensures the pump can intelligently diagnose the presence of syringes, liquid leakage at syringes, motor stall, abnormal power supply, and working progress with clear voice reminders, LED indicators and other prompts supporting the user through the operation process thus ensuring that valuable sample loss is minimised whilst safety is optimised. Importantly the speed, fl ow rate and dispense volume, together with many others can be controlled in real-time and remotely.


The dLSP500 complies with the 21 CFR guidelines for pharma with the ability to robustly manage data, maintain digital records and control access to data.


Contact Premier Control Technologies to develop a fl uid transfer system that meets all your technical requirements, on budget and on time. More information online: ilmt.co/PL/4LOZ


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


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