mercur DUO plus - mercury analyzer based on could vapor technique with AAS and AFS The Dedicated Mercury Trace Analyzer

mercur DUO plus – Robust and Simple Mercury Trace Analysis

Mercury determination at trace levels is a global challenge. With growing industrialization and the development of ever new technologies and materials, leads to an increasing pollution of the environment. Mercury and its compounds are of particular interest for environmental and food analysis due to their high toxicity. The mercur DUO plus offers a very simple, robust and cost-effective method for the determination of mercury traces in liquid samples. It combines the proven cold vapor technique with optical spectroscopy methods, such as atomic absorption spectroscopy (AAS) and atomic fluorescence spectroscopy (AFS). In the cold vapor technique, mercury compounds are reduced to atomic mercury by chemical reaction with a reducing agent such as tin (II) chloride or sodium borohydride. This basic principle is implemented in the mercur DUO plus using a fully automated and time-controlled flow injection technique. Automated processes like dosing of reagents and sample solutions as well as rinsing of tubing enable simple and efficient operation with low chemical consumption and short measuring times.

 

The detection of the atomic mercury is carried out either by robust AAS or the highly sensitive AFS with detection limits down to the ppq range. Additional enrichment is achieved by passing the atomic mercury over an additional gold collector. This double amalgamation increases the detectability of the mercury and guarantees standard-compliant operation (according to EPA Method 1631).

Ease of use and automation are key features of the mercur Duo Plus. Relaible and low-maintenance routine analysis of even complex samples is guaranteed by technical details, like a bubble sensor, a specially optimized drying membrane and an intelligent gas-liquid control. The manual version of the mercur DUO plus for small sample numbers can be expanded with the AS-F or AS-FD autosamplers with dilution function for maximum sample throughput.