Environmental Laboratory

Dedicated solution for online monitoring of chromate in wastewater streams

Apr 10 2017 Comments 0

Metrohm Process Analytics is pleased to present a solution for the online monitoring of chromate (hexavalent chromium) in industrial wastewater streams. This turn-key solution uses photometric determination and is performed on the ICON Analyzer, a dedicated online photometer for water and wastewater analysis.

Chromate is useful in many industries - in the production of pigments and dyes for textiles, paints and colored glass, anodized or plated onto metals for surface finishing applications, as an oxidizing agent to tan and process leather, and as a corrosion inhibitor in industrial cooling towers.

Chromate easily leaches from soil to ground and surface waters and can enter the air through evaporation and combustion processes. Monitoring waste streams containing chromate is extremely important because chromate is highly toxic even in minute concentrations; a property which is enhanced by the high solubility of chromate and its affinity for leaching.

In the method concerned, the target analyte is mixed with reagents in a fully automated procedure, resulting in a soluble product which can be measured photometrically at a wavelength of 560 nm.

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