This is the essential instrument for determining mercury in water samples and, in general, aqueous solutions with concentrations in the ppt range. It uses atomic fluorescence spectrophotometry coupled with Hg reduction using the cold vapour technique (CV-AFS) with or without gold amalgam. The operating principle is based on the standardised EPA Method 1631e. The instrument's limit of detection (LOD) is < 0.1 ng/L.
