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Separation of mercury from VOC’s and selective detection using gold film amalgamation and photoionization detection

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Accepted for presentation at #ACSDenver 2015 on March 23, 2015:



PAPER ID: 2152487 
PAPER TITLE: “Separation of mercury from VOC’s and selective detection using gold film amalgamation and photoionization detection” 

DIVISION: [ANYL] Division of Analytical Chemistry
SYMPOSIUM: Advances in Analytical Separations 
PRESENTATION FORMAT: Oral 

Authors: J.N. Driscoll and J.L.Maclachlan, PID Analyzers, LLC Sandwich, MA USA


We used a sensitive but nonspecific photoionization detector (PID) with a 10.6 eV lamp to measure mercury that has an ionization potential of 10.43 eV. The PID responds to both mercury and VOC’s and the VOC’s have to be removed to make the technique specific for mercury. The chemistry of the gold/mercury amalgam makes this method specific for mercury and eliminates interference from VOC’s. This technique also concentrates the sample making the method sensitive to sub ppb levels. Mercury permeation tubes were used to generate levels from 0.02 to 1 ppm.
The method is applicable for b…