wet chemistry Articles
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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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Using FTNIR as a Real Time QC Tool for Polymer Manufacture
Abstract Near infrared spectroscopy has been used widely in the polymer industry. Compared to traditional methods such as wet chemistry and chromatographic methods, NIR spectroscopy provides considerable advantages in process and quality control applications through fundamental benefits such as low to no cost of consumables for instance solvents, columns, reagents; real time analysis ...
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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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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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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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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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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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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 ...
By BUCHI
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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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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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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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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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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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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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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 ...
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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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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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Is it time to recycle more nickel?
Now you might think me a little sad, but I have to confess that as a metallurgist, I always find it interesting just how closely the history of mankind is linked to advances in metal working. The first evidence of metal working in Europe dates from around 5500 BC with the extraction of copper, lead and precious metals and this was followed by the working of bronze from around 4000 BC, both of ...
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