Method ID-145

Mercury (Particulate) by CVAA


This method describes the collection of airborne particulate mercury on 0.8-µm mixed-cellulose ester membrane (MCE) filters and the subsequent analysis using a cold vapor-atomic absorption spectrophotometer (CV-AAS). Samples are initially dissolved using concentrated nitric and sulfuric acids. A potassium permanganate solution is added to help dissolve the sample matrix. A hydroxylamine hydrochloride solution is then added to reduce the excess potassium permanganate. Finally, stannous chloride is added to an aliquot of the sample to reduce the mercury to the vapor state. This vapor is then driven into an absorption cell of a flameless atomic absorption spectrophotometer for analysis. The range of the analytical procedure has been determined to be 0.1 to 2 µg mercury.


(OSHA)

Request-A-Quote

No Obligation Quotation for Analytical Services

If you would like us to provide a quote for laboratory analysis, just provide us with as much information as you can about your project (the more, the better) and we'll provide you a quote via email. As you are searching or browsing our Analytical Guide, you'll see the Request-A-Quote icon... just click on it to start the request process.
Request-A-Quote

Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   None noted in method
Preservatives:   None noted in method
Required Preps:   Filters: Mixed-cellulose ester (MCE) filters (0.8-µm pore size), cellulose backup pads, and cassettes, 37-mm diameter
Collection Method:   A mercury-containing ester filter and a calibrated personal sampling pump are used at a recommended air volume of 10 L, and sampling rate of 2L/min.
Analytical Methodology:   Cold Vapor Atomic Absorption Spectrophotometry (CV-AAS).
Documentation:   ID-145

Analyte List*

Analyte Formula CAS Number Detection Limit
Mercury
Hg
7439-97-6
0.02
 µg

* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.