Voltammetry News
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Launch of Metrohm AeRosol Sampler `MARS`
With the intensification of air pollution, the monitoring of the chemical composition of aerosols (particulate matter «PM») is becoming more and more important. However, traditional filter membrane sampling methods are time-consuming and labor-intensive, and the collected samples need manual pretreatment. The usual sampling period is several days, which cannot provide higher temporal ...
By Metrohm AG
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Thiourea in copper electrorefining plants
Copper is the preferred metal in electrical wires, as it is a good electrical conductor. To achieve the high purity required for such electrical wires, copper is purified using electrorefining. For an optimal electrorefining process, thiourea is added to the electrolyte. Polarography offers a reliable and inexpensive monitoring of the thiourea, preventing quality issues caused by wrong thiourea ...
By Metrohm AG
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Simple analysis of thiomersal using voltammetry or polarography
Thiomersal (also called thimerosal or merthiolate) is an organic molecule containing mercury, which has been widely used as preservative for vaccines and eye drops. To minimize the risk for consumers, authorities limit the mercury content. Voltammetry or polarography offers a simple and accurate determination of trace amounts of mercury without prior sample preparation. Thiomersal’s ...
By Metrohm AG
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Highly sensitive method for iron in boiler feed water
Adsorptive stripping voltammetry (AdSV) provides fast and sensitive detection of iron in process waters of the water-steam circuit (boiler feed water, makeup water, condensate) in power plants. This is achieved by adding 2,3-dihydroxynaphthalene (DHN) as complexing agent to convert the iron into an adsorbable complex that is reduced on the electrode surface after a defined ...
By Metrohm AG
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Analysis of stabilizers in electroless nickel baths
Many industrial production processes use electroless nickel (EN) plating to prevent wear and corrosion. In the semiconductor industry, EN plating is an essential production step, where the ENIG (electroless nickel, immersion gold) and ENEPIG (electroless nickel, electroless palladium, immersion gold) processes are used for the PCB production. Stabilizers play an important role in electroless ...
By Metrohm AG
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Aluminum monitoring for wastewater treatment
Aluminum salts can be used in wastewater treatment as coagulation agent and flocculant. However, because of its toxic effect on fish, it is important to remove aluminum efficiently before the treated water is released into the environment. Metrohm offers a solution to analyze the aluminum content both in the flocculant according to the newly revised standard ABNT NBR 11176 and in the treated ...
By Metrohm AG
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Free webinar: How to maximize efficiency of your oil condition monitoring
Be it wind turbines, heavy equipment, or any other kind of machinery – monitoring hydraulic and lube oils is critical for performance and to prevent premature wear. In a free webinar on June 3, 2021, three different analytical techniques are presented for determining the most critical physical and chemical parameters in oil condition monitoring. Each technique – titration, ...
By Metrohm AG
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2020 SEIBOLD-Wasser research programs turn into new products
SEIBOLD-Wasser continuously invest into research and development of measurement technologies and products. The role SEIBOLD-Wasser plays in the industry is determined because of it’s specialisation in online measurement products. Specialised companies will always push new technologies and products into their markets. While “I do everything” – companies will slow down ...
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Battery research and production
Powerful batteries are key to the further advancement of green mobility and a decisive contribution to reducing carbon dioxide emissions. All over the world research laboratories are investigating materials and procedures to help increase the energy storage capacity and overall efficiency of batteries. Metrohm is pleased to support these efforts with an overview of analytical methods and ...
By Metrohm AG
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Revealing the secrets of ancient Greece
One of the most fascinating items ever salvaged from an ancient shipwreck is the so-called Antikythera Mechanism. More than 2000 years old, this magnificent piece of mechanical engineering forced the scientific community to rewrite the history of science as it became clear that its unknown maker must have possessed knowledge and skills that were believed to simply not exist in the 1 century ...
By Metrohm AG
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Analyze This - The new Metrohm blog is here!
«Metrohm» has always meant state-of-the-art technology for the chemical laboratory. For many scientists, we have also been a preferred partner to help find or develop solutions for specific application challenges. We would like to share the highlights of our application know-how with the world, and that is why, as of this year, we will start blogging about many interesting ...
By Metrohm AG
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Voltammetry: Trace Level Determination of Cu, Pb, and Zn in Fish for Human Consumption
A research paper recently published by Jafari and Sobhanardakani in Current World Environment suggests voltammetry as a viable method for the determination of the heavy metals Cu, Pb, and Zn at trace levels in three different species of freshwater fish. Contamination of fish for human consuption by heavy metals is a health hazard and an analytical challenge at the same time. While there are ...
By Metrohm AG
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Famous Pigment, Medical Cure, Notorious Poison – Toxic Arsenic Determined With New, Low-Cost Sensor
Throughout the course of history, people have found uses for the various properties of arsenic and its compounds. Red and yellow arsenic sulfides (As2S3 and As4S4) were used in antiquity as makeup and for hair removal. Artists used arsenic compounds as pigments, and, to name just one medical application: the first effective drug to be used against syphilis was the arsenic compound arsphenamine ...
By Metrohm AG
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Calibration Free pH Sensing in Hoagland Solution
Calibration Free pH Sensing in Hoagland Solution ANB Sensors are developing a solid-state pH Sensor which is calibration free, operates over a wide pH range and is specifically tailored for low buffer media. The sensor operates using a standard reference electrode and a counter electrode, but with two sensing electrodes through which standard square wave voltammetry is recorded. The first ...
By ANB sensors
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New Polymer Brochure
Metrohm is pleased to present «Polymer and plastics analysis» – a new brochure focusing on quality control in the polymer industry. The brochure includes the latest norms, standards, and applications and can be downloaded for free. «Polymers and plastics analysis» addresses the analytical challenges along the entire process chain. The brochure provides free access ...
By Metrohm AG
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New Metrohm brochure and webpage - Surface finishing
Metrohm has been a solution provider to the surface finishing and electronics industry for many years. The new brochure «Surface finishing» presents applications and instrumentation for quality control of process baths applied in surface finishing and PCB production – including monitoring of waste water. The brochure can be ordered free of charge and is also available on ...
By Metrohm AG
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MEP Instruments to become Metrohm Australia, Metrohm New Zealand
Effective 1 January 2018, the distributor of analytical technology solutions will be operating under the name of Metrohm, its sole parent company. The change shall reflect the close integration of the Australian and New Zealand operation under the global Metrohm brand. Metrohm is a global leader in the fields of titration and voltammetry and an innovator in ion ...
By Metrohm AG
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Metrohm Raman acquires Diagnostic anSERS inc.
Metrohm Raman is pleased to announce its acquisition of Diagnostic anSERS inc. A subsidiary of Metrohm AG, Metrohm Raman is a key manufacturer of handheld Raman spectrometers based in Laramie, Wyoming. This acquisition expands the capabilities of our Mira Raman analyzers from instant materials identification to trace chemical analysis. Dr. Keith Carron, CEO of Metrohm Raman: «We ...
By Metrohm AG
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Metrohm acquires majority of DropSens
The Switzerland-based Metrohm AG is pleased to announce the acquisition of the majority of share in DropSens S.L. The acquisition comes after a longer period of successful cooperation between the two companies in the development of screen-printed electrodes and portable electrochemical instrumentation. With the acquisition of DropSens, Metrohm benefits from the know-how and resources of a ...
By Metrohm AG
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Online Hexavalent Chromium Analyzer Validates RCOF Treatment Process Piloted at California Water Utility
A California Water Utility experiencing elevated levels of hexavalent chromium [Cr(VI)] in their drinking water supply is the first commercial application to use a real-time water quality monitor developed by Aqua Metrology Systems Ltd (AMS) to provide high frequency, reliable, and accurate data on hexavalent and total chromium. The Utility obtains water from a groundwater source where Cr(VI) is ...
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