Environmental analysis – Water

Regulatory compliance

Standards
Numerous standard-compliant methods

Water is our business. Metrohm instruments and applications meet numerous international standards (e.g., ISO, EN, EPA, ASTM, AOAC) for water analysis.

Have a look at our broad selection of standard-compliant methods!

Chromium(VI): New limit value

Potassium chromate sample
New limit value for chromium(VI) in line with EPA 218.7

California imposes a 10 µg/L limit value for chromate in drinking water. You can determine Cr(VI) by ion chromatography according to EPA method 218.7.

> Find out more!

Arsenic and mercury in water with the scTRACE Gold

Waterfall
Limit value of 10 μg/L arsenic for drinking water

In addition to arsenic from natural origin, anthropogenic activities contribute to the arsenic contamination of water. The World Health Organization (WHO) recommends a maximum content of 10 µg/L for drinking water.

Arsenic by anodic stripping voltammetry using the scTRACE Gold sensor

Anodic stripping voltammetry (ASV) using the scTRACE Gold offers a straightforward, highly affordable alternative to the spectroscopic determination of arsenic. The method distinguishes between As(total) and As(III). The limit of detection is significantly lower than international limit values.
scTRACE Gold sensor is also suitable for inorganic mercury detection

The scTRACE gold sensor can also determine inorganic mercury in a vast range of water samples. ASV achieves a limit of detection well below the international limit values.

Related products

scTRACE Gold for the analysis of As(total), As(III) and Hg

> Learn more


797 VA Computrace for the analysis of As(total), As(III) and Hg

> Learn more

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Bromate in water according to EPA 300.1, 317, and 326

Water Bromate
Carcinogenic bromate from ozonization

Carcinogenic bromate forms during the ozonization of drinking water. Several international standards stipulate detection limits and test methods.

Great choice of approved detection techniques

Depending on the required detection limit, different detection methods can be used. Conductivity detection with chemical suppression allows the determination of bromate in the lower μg/L range. In the ng/L range, bromate can be detected by IC/MS coupling or post-column derivatization with potassium iodide and subsequent UV detection.
Bromate according to EPA 326.0

Spiked (black) and unspiked (blue) drinking water sample, post-column reaction with UV detection.

> EPA test methods and our detection limits for bromate analysis

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Metals in water according to DIN 38406 Part 16

Sewage treatment
Zinc, cadmium, lead, copper, thallium, nickel, and cobalt by voltammetry

Zn, Cd, Pb, Cu, Tl, Ni, and Co must be determined regularly in all types of water samples. Zn, Cd, Pb, Cu, and Tl are determined on the HMDE by anodic stripping voltammetry (ASV), Ni and Co by adsorptive stripping voltammetry (AdSV).

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Further applications and products

Female lab worker with PGSTAT128N

Energy from wastewater: microbial fuel cell

Microbial fuel cells produce electricity from a wide range of organic compounds in biomass or wastewater by using living bacteria. The Autolab PGSTAT128N and the FRA32M module allow you to monitor electron transfer kinetics and interfacial properties.

Application Finder
ADI 7010 TOC Analyzer

In-process analysis of total organic carbon (TOC)

The TOC denotes a sample‘s total content of organically bound carbon. As a sum parameter, it provides an easy, quick, and accurate way of assessing the amount of organic substances in water samples. The new ADI 7010 TOC Analyzer from Metrohm Process Analytics determines the TOC value online – completely automatically and directly in the process.

Application Finder
Female lab worker with TitrIC pro

Multiparameter analysis with one instrument

One single instrument takes over the entire analysis of numerous water quality parameters: TitrIC combines titration and ion chromatography while VoltIC includes voltammetry and ion chromatography. The instruments stand out with their small footprint and completely automated workflow.

TitrIC Vario Pro and VoltIc Vario Pro

Webinar pH measurement!

Female lab worker with 827 pH Meter and Unitrode
Getting pH measurements right – small cause, large effect

The pH value is one of the most important and therefore also one of the most frequently measured quantities in analytical chemistry. This webinar shows you how to measure pH values accurately and avoid errors.

> Go to the Webinar


Testimonial: AGROLAB

"After 20 years of good experience with Metrohm automated titration, we are most satisfied to have replaced our previous ion chromatography systems for a Metrohm solution, too."

AGROLAB uses Metrohm‘s automatic titration systems for determining the chemical oxygen demand (COD) in wastewater as well as ion chromatography systems for analyzing anions in leachates and wastewater.