wet chemistry Articles
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Beyond Laboratory Research on White Rust and Passivation
EVAPCO initiated an in-depth study to investigate the formation and control of white rust. This study, which began over three years ago, led to the development of industry-leading research equipment specifically designed to evaluate white rust formation on evaporative heat transfer surfaces. A small-scale closed circuit cooler was designed and built to replicate the dynamic conditions associated ...
By Evapco Inc.
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Complete HF Monitoring Solutions for Primary Aluminum Smelters
Aluminium smelting generates large amounts of hydrogen fluoride gas (HF). Worker safety and ambient air quality concerns require that HF be monitored at several locations in smelters. Historically, a variety of methods have been used for HF monitoring. Cassette samplers and wet chemistry techniques, coupled with complex and expensive sampling manifolds have monitored roof-line and scrubber duct ...
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2060 Human Interface: A top-notch solution for industrial process automation and monitoring
With the ongoing growth of process analytical technologies and of connected devices, more efforts have had to be put into developing reliable, safe, and efficient interfaces. Based on the 2060 online analysis platform, Metrohm Process Analytics has designed the perfect interface for any industrial process plant: the 2060 Human Interface (HI). Following the concept of ultimate flexibility of this ...
By Metrohm AG
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Adsorption of Trihydroxamate and Catecholate Siderophores on -iron (Hydr)oxides and their dissolution at pH 3.0 to 6.0
The adsorption of desferrioxamine (DFOB), acetyl desferrioxamine (DFOD1), and a catecholate derivative (DFOMTA)] on goethite (-FeOOH) and hematite (-Fe2O3) and mineral dissolution behavior at pH 3.0 to 6.0 were studied to yield an understanding of the mechanisms of siderophore complexation on phases and also to study how variations in siderophore molecular structure, as modified by proton ...
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McCampbell Analytical, Inc - Case Study
Located in the San Francisco Bay Area, McCampbell Analytical, Inc. (MAI) offers a full range of environmental services including Wet Chemistry, Microbiological and Aquatic Toxicity testing as well as analytical testing services for drinking water, waste water, storm water, metals testing, soil testing, volatile organic compounds (VOC’s) testing, hazardous waste, and food analysis for a ...
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Portable solution for preventing expensive repairs - Case Study
Portable oil analysis solutions empower ship maintainers to act fast in preventing failure Marine operators have known why oil analysis is a critical part of a good maintenance program for quite some time, and they practice it with combinations of onboard test kits and shoreside analysis laboratories commonly provided by the lubricant supplier. Slow steaming, long component lead times, ...
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Monitoring Phenol in Water - Case Study
The Situation A plant located in the eastern United States manufactures phenolic resin for applications in plastics molding. This plant uses well water for cooling its reaction process and then discharges the water into a local creek. A leak in the reactor and associated cooling equipment would cause phenol and phenolic compounds to contaminate the cooling water. Such a leak could result in a ...
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Quality Control of Infant Formula in USA - Case Study
Customer: Mead Johnson Nutrition, USA Mead Johnson is a global leader in pediatric nutrition, best known for their flagship Enfa family of brands, including Enfamil® infant formula. Their portfolio of brands represents specialized products that encourage healthy growth, support brain development, and address common feeding issues or rare metabolic disorders. Application: Quality Control of ...
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Analysis of Tetrahydrocannabinol Vape Oils Using Pyroprobe by Thermal Extraction
Abstract This application note demonstrates a multi-step thermal extraction study on Tetrahydrocannabinol (THC) vape oils. Introduction E-cigarettes have gained popularity in recent years, in conjunction with the legalization of marijuana in many U.S. states. Authentic THC vape oils are not easily distinguishable from the counterfeits, which are poorly regulated and can cause severe lung ...
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Potential of in-situ sensors with ion-selective electrodes for aeration control at wastewater treatment plants
Abstract: A pilot-scale activated sludge wastewater treatment plant (WWTP) operated with nitrification and pre-denitrification was monitored with a set of on-line sensors for over 3 years. Wet-chemistry ex-situ analyzers, UV and UV-Visible in-situ sensors and in-situ sensors based on ion-selective electrodes (ISE) were used. New ISE sensors for ammonium, nitrate and nitrite, adapted to water and ...
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Potential of in-situ sensors with ion-selective electrodes for aeration control at wastewater treatment plants
Abstract: A pilot-scale activated sludge wastewater treatment plant (WWTP) operated with nitrification and pre-denitrification was monitored with a set of on-line sensors for over 3 years. Wet-chemistry ex-situ analyzers, UV and UV-Visible in-situ sensors and in-situ sensors based on ion-selective electrodes (ISE) were used. New ISE sensors for ammonium, nitrate and nitrite, adapted to water and ...
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Portable oil analysis solutions empower ship maintainers to act fast in preventing failure - Case study
Marine operators have known why oil analysis is a critical part of a good maintenance program for quite some time, and they practice it with combinations of onboard test kits and shoreside analysis laboratories commonly provided by the lubricant supplier. Slow steaming, long component lead times, constant switchovers from HFO to lowsulfur fuel, and high and low BN lubricants means having an ...
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Laboratory waste gas treatment solutions
The target pollutants emitted by the laboratory are ranked in the order of potential emission intensity and control necessity: small molecular gas pollutants, specific organic pollutants (formaldehyde, xylene, methanol), biological pollutants (pathogenic microorganisms and their aerosols) ), odor, other TVOCs (ether, benzene and other macromolecular organic substances), particulate matter. There ...
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Slick performer - Portable oil analysis solutions empower ship maintainers to act fast in preventing failure
Marine operators have known why oil analysis is a critical part of a good maintenance program for quite some time, and they practice it with combinations of onboard test kits and shoreside analysis laboratories commonly provided by the lubricant supplier. Slow steaming, long component lead times, constant switchovers from HFO to lowsulfur fuel, and high and low BN lubricants means having an ...
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A Novel Analysis of Solvent Residual in Cannabis Oil Using Dynamic Headspace by PAL System
Abstract This application note adopted the Full Evaporation Technique (FET) to analyze the solvent residual, based on California Residual Solvents Category, in cannabis oil by a CDS Analytical 7000C concentrator equipped with a dynamic headspace (DHS) module. This setup was mounted on a PAL RTC rail and connected to a GC/MS for compounds separation and detection. Introduction In the ...
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Improved HF monitoring in Primary Aluminium Smelters with Laser Gas Detectors
Primary aluminium smelting generates large amounts of hydrogen fluoride gas (HF). Concerns for worker safety and ambient air quality require that HF be monitored at several locations in smelters. Historically, a variety of methods have been used for HF monitoring. Cassette samplers and wet chemistry techniques, coupled with complex and expensive sampling manifolds have monitored roof-line and ...
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New Nitrate monitor lowers costs
Responding to global demand for improved monitoring of nitrate in freshwater, OTT HydroMet has launched a new optical nitrate sensor, the OTT ecoN. “This is fantastic news for scientists, catchment managers, water companies, regulators and environmental consultants,” says Ronan O'Maitiu, Global Product Manager for the OTT ecoN. “In the past, customers have been caught between ...
By OTT HydroMet
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Beyond Karl Fischer: Titration Methods
Almost every industry is concerned about water concentration levels in some way. Food and pharmaceuticals automatically come to mind, but fuel, explosives, agri-chem, and polymer processing businesses (to name a few) all rely on moisture content as a critical quality attribute. Karl Fischer titration (KFT) is the best-known technique for determining water levels in samples, and it is supported ...
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High frequency monitoring needed to protect UK rivers - Case Study
The science behind nutrient pollution in rivers is still poorly understood despite the fact that nitrate and phosphate concentrations in the UK’s rivers are mostly unacceptable, although an element of uncertainty exists about what an acceptable level actually is. Key to improving our understanding of the sources and impacts of nutrient pollution is high-resolution monitoring across a broad ...
By OTT HydroMet
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The Dawn of a New Era: Real-Time BOD Data Case Study
In many areas of our life, manual monitoring has been replaced by automatic or online monitoring as and when the instrumentation technology has been developed; however there is one area that has fallen behind the times and has not caught up which is water quality. Many parameters are simply not possible to measure in the field or can only be done by grab sampling. In the last ten years or so we ...
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