- Home
- Companies
- Metrohm AG
- Articles
Metrohm AG articles
New features make the latest version of the OMNIS analytical data management system more powerful than ever
Metrohm Combustion IC – a validated all-in-one solution for comprehensive AOX determination (AOF, AOCl, AOBr, AOI) according to DIN 38409-59
Organohalogen compounds are widespread, persistent, and potentially toxic for humans and the environment. However, the techniques commonly used to monitor adsorbable organic halogens (AOX) can only determine the sum of organically bound chlorine, bromine, and iodine. These techniques do not provide individual results for
Dissolved oxygen is a term describing the amount of oxygen molecules (O2) which are dissolved in a liquid phase under certain conditions. In this white paper, two different methods for the analysis of dissolved oxygen, titration and direct measurement, are compared and contrasted to help analysts determine which method is more suitable for their specific applications. Here, we primarily focus on the
The prevalence of per- and polyfluorinated alkyl substances (PFASs) and other perfluorinated compounds (PFCs) that persist and accumulate in the environment (as well as in our own bodies) is becoming an increasing concern to international health authorities. These chemicals are a class of stable compounds known as «forever chemicals» and are comprised of nearly 10,000 different substances. They are a challenge to monitor indi- vidually and quantify in low concentrations, even in d
Non-targeted adsorbable organically bound fluorine (AOF) analysis by CIC
Per- and polyfluorinated alkyl substances (PFASs) are thousands of organic molecules in which all the hydrogen atoms on at least one carbon are replaced by fluorine [1]. PFASs are widely used in different industries, e.g., as surfactants for film-forming foams or as impregnating agents for packaging [2]. Due to their extreme persistence, they are called «foreve
Measurement of AOCl, AOBr, AOI, and AOF according to DIN 38409-59
AOX (adsorbable organically bound halogens) is a complex parameter covering the sum of halogenated organic compounds adsorbable on activated carbon. Many of these organohalogens and their degradation products pose serious risks to human health and the environment [1–4]. Monitoring them is essential to ensure appropriate water quality, to trace their sources, or to investigate the efficiency of AOX rem
Determination of AOCl, AOBr, AOI, and AOF with combustion ion chromatography (CIC) according to DIN 38409-59
Adsorbable organically bound halogens (known as AOX) are the sum of numerous halogenated organic compounds that are adsorbable on activated carbon. Many of these organic halogen compounds and their degradation products pose serious risks to human health and the environment. Therefore, AOX must be monitored to ensure adequate water qualit
Haloacetic acids (HAAs) are commonly produced as disinfection byproducts (DBPs) from water treatment processes. Some HAAs are regulated by the author- ities and have been classified as potentially carcino- genic. They have traditionally been analyzed by gas chromatography (GC), a technique that requires time-consuming sample extraction and derivatiza- tion, leading to higher costs per analysis.
Ion chromatography hyphenated to mass spectrom- etry (e.g., single or t
Mercury-free methods for determination of heavy metals in boiler feed, drinking, and sea water samples.
Stripping voltammetry uses electrochemical sensors for the determination of heavy metal ions in different types of samples. These can include boiler feed water, drinking water, sea water, beverages, and even industrial samples like plating baths.
Low detection limits (between μg/L and ng/L), the possibility to