This document describes a method for the sampling and measurement of mercury of both vapour and
solid phases on stationary source flue gas streams. Mercury generally exists as elemental (Hg
0) and
oxidized (Hg
2+) forms, both in the vapour and solid phases in flue gases. The vapour-phase (gaseous)
mercury is captured either isokinetically or non-isokinetically with a gold amalgamation trap after
removing solid-phase (particulate) mercury with a filter. Because gold amalgamation trap captures
only gaseous elemental mercury, the oxidized mercury (Hg
2+) in the vapour phase is converted to
elemental mercury (Hg
0) prior to the gold amalgamation trap. The concentration of gaseous mercury
is determined using atomic absorption spectrometry (AAS) or atomic fluorescence spectrometry (AFS)
after releasing mercury by heating the gold amalgamation trap. Separately, particulate mercury is
collected isokinetically on a filter and the concentration is determined using cold vapour AAS or cold
vapour AFS after dissolving the particulate mercury into solution.
All current amendments available at time of purchase are included with the purchase of this document. | File Size : | 1
file
, 2 MB |
| ISBN(s) : | 9780580959127 |
| Note : | This product is unavailable in Russia, Ukraine, Belarus |
| Number of Pages : | 44 |
| Product Code(s) : | 30349188, 30349188, 30349188 |
| Published : | 11/20/2020 |
