electrochemical monitoring Articles
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Enzymatic inhibition-based electrochemical biosystems: general aspects and applications for the monitoring of aquatic ecosystems
The use of biosensor-based analytical methods, and specifically of the techniques based on 'inhibition' enzymatic amperometric electrodes, is gaining growing interest in the field of toxicity tests in environmental and food matrices. This contribution proposes the use of inhibition-based enzymatic bioelectrodes for the rapid determination of pesticides, herbicides and toxins in aquatic ...
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Electrochemical biosensors for environmental monitoring
The challenge for the monitoring of environmental hazards such as pollutants, herbicides, pesticides and toxins caused by expanding industrialisation and application of new intensive agricultural technologies is to develop efficient tools that offer precision, sensitivity, and speed and ease of operation in situ and avoid consequently risks for both human and environmental health. In this ...
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In-Situ® Optical RDO® Methods for Dissolved Oxygen Measurements Outperform Traditional Methods
ABSTRACT Three methods are generally used to measure dissolved oxygen (DO) in surface waters: Winkler titration, membrane-covered electrochemical sensors (polarographic or galvanic cell), and luminescent-based sensors. Optical (luminescent) technology for measuring DO levels in water has quickly become a well-accepted method due to many advantages over membrane-based sensors, and its close ...
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What is On-line Electrochemical Mass Spectrometry?
On-line Electrochemical Mass Spectrometry (OEMS) is an advanced analytical technique that combines electrochemical methods with mass spectrometry. It enables real-time monitoring and analysis of evolved gases during electrochemical processes and is an extension of Differential Electrochemical Mass Spectrometry (DEMS). OEMS plays an important role in various scientific fields, offering valuable ...
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Affinity–based biosensors for heavy metal detection
In recent years, there has been a pressing need for fast and reliable methods for environmental monitoring. Among the various pollutants, the heavy metals are some of the most harmful because these substances are non–biodegradable and retained by the ecological system. Conventional analytical techniques for heavy metals imply high cost, trained personnel and the repute that they are mostly ...
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Electrochemical Sensors for Specific Gas PPM Monitoring
Echem sensors are able to read a specific gas even when it is mixed in a background of other gases. Echem sensors are typically used to read very low PPM concentrations of toxic gases. The Echem sensor consists of a small cell holding an electrolytic solution. This solution needs a specific gas in order to produce an electrical signal. When the specific gas passes through a permeable membrane ...
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Working Principles of Air Monitoring: Light Scattering; Electrochemical, NDIR, PID
Oizom has years of experience in stimulating innovation by creating groundbreaking technology for environmental monitoring. With an IoT-based development approach, Oizom has been able to successfully unlock multiple solutions, catering to various industries. Our sensing technology works on proven working principles like NDIR, Electrochemical Analysis, Semiconductor, Optical Measurement, and ...
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Comparing Performance of Dissolved Oxygen Probes and Examining Payback of the RDO PRO Probe Used to Monitor Aeration Basins
Introduction Wastewater Treatment Plants (WWTPs) can use reliable dissolved oxygen (DO) data to improve operations, especially with continuous DO monitoring and realtime data acquisition. When DO probes and controllers are connected to blower controls through a SCADA system, the Publicly Owned Treatment Works (POTW) or WWTP will be able to: Optimize sewage treatment Reduce energy bills ...
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CH4 Monitoring
Methane has a direct influence on climate change as well as an indirect effect on human health, plant yield, and productivity due to its role as an important precursor to ground-level ozone formation. Therefore, CH4 monitoring is an efficient way to detect the buildup of CH4 levels and take necessary actions. This article covers information on methane gas, its sources in the ambient air, ...
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Methyl Mercaptan monitoring
Methyl mercaptan (CH3SH), also known as methanethiol, is a colourless, highly flammable, toxic gas with a distinct, strong unpleasant odour. Moreover, microbial degradation of organic matter releases methyl mercaptan. As a result, prolonged exposure of the CH3SH can quickly deaden a person’s sense of smell, making the odour of methyl mercaptan an unreliable indicator of its presence. Hence, ...
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H2S Monitoring
H2S is formed whenever elemental sulfur or sulfur-containing compounds come into contact with organic materials at high temperatures. Continuous or high-level exposure of the H2S can quickly deaden a person’s sense of smell, making the odour of H2S an unreliable indicator of its presence. Hence, other means such as hydrogen sulfide monitoring is a viable solution to provide adequate warning ...
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SO2 Monitoring
SO2 monitoring is an efficient way to detect and reduce exposure to sulfur oxides which further benefits in reducing the formation of particulate sulfur pollutants like fine sulfate particles, acid rain, and smog. This article covers information on sulfur oxides, their sources, permissible levels in the ambient air, health and environmental impact, possible corrective measures, the need for ...
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Monitoring landfill gas - Case Study
Infrared absorption Infrared absorption is usually the preferred method for measuring methane and carbon dioxide. Most gases absorb radiation in the infrared region. The wavelength of radiation that is absorbed is determined by the natural vibration frequencies of the molecule. These natural frequencies will depend on several factors. Thus different gas molecules have different natural ...
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Ozone Monitoring
Ground-level ozone is harmful to human health and the environment, especially on sunny days when its concentration can reach high levels. Also, it is a precursor of photochemical smog, which has its fatal effects. Real-time O3 monitoring helps in calculating the air quality index to deliver health advisories as well as formulating an action plan to meet standards. This article covers information ...
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NH3 Monitoring
Ammonia is a colorless, toxic, irritating gas with a pungent odor that is as a result released from decaying organic matter, including plants, animals, animal wastes, and fertilizer use. As a result, prolonged exposure of the NH3 can quickly deaden a person’s sense of smell, making the odor of NH3 an unreliable indicator of its presence. Hence, other means such as the use of NH3 monitors ...
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Chlorine Monitoring
Elemental chlorine is a highly reactive, greenish-yellow gas. It has a suffocating, irritating, and pungent bleach-like odour that is detectable at low concentrations (above 0.3 – 0.5 ppm). Therefore, continuous or high-level exposure of the Cl2 can quickly deaden a person’s sense of smell, making the odour of Cl2 an unreliable indicator of its presence. Hence, other means such as ...
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NOx Monitoring
NOx, apart from affecting human health and the environment itself, has the potential to produce “secondary pollutants” such as ozone, smog, nitric acid, and particulate matter. Also, these pollutants have negative effects on health and the environment. NOx monitoring is an efficient way to prevent the accumulation of high levels of NOx as it helps detect the amount of NOX we are ...
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Carbon Monoxide Monitoring
Carbon monoxide, one of the most abundant pollutant gases. The gas is indetectable to humans as one can not see, smell, or taste. However, exposure to high levels of CO can cause CO poisoning leading to serious health issues, giving it the name “The Silent Killer.” CO monitoring is the most effective way to know if one is at risk of carbon monoxide exposure. Meanwhile, this article ...
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Increased Demand for PureAire’s Oxygen Monitor for Nitrogen and Helium Storage
When storing or using Liquid Nitrogen, Helium, CO2, or Argon cylinders in a confined space, what are the potential risks? Gas leaks are the most common, requiring the need for an oxygen deficiency monitor for protecting employees in the workplace. With inert cryogenic gases, loose or broken fittings can leak gas into a room displacing oxygen, causing impaired judgment or loss of life to workers. ...
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PureAire Makes Oxygen Monitor for Nitrogen Generators
Nitrogen generators are most commonly used in areas where on-demand nitrogen is preferred rather than, storing liquid nitrogen (LN2) in cylinders. Nitrogen generators have a lower cost of operation, and can be used where smaller amounts of nitrogen are needed. Nitrogen generators are used in the pharmaceutical industry, testing laboratories, cryogenic facilities, welding manufactures, and ...
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