Method TO-6

Determination of Phosgene in Ambient Air Using HPLC

This method is for the collection and analysis of phosgene in ambient air.  Air is passed through a solution of aniline to form carbanilide which is analyzed by high performance liquid chromatography (HPLC).

The sample is collected using a rotameter, pump and three midget impingers.  The first two impingers are filled with 10mL of aniline/toluene (2:98 v/v).  The third impinger contains silica gel.  After sample collection, the impinger solution contents are combined into a glas bottle.  The impingers are rinsed with toluene and the rinse is added to the impinger contents.  Mark the volume level on the bottle before shipment.

The sample is taken to dryness by the lab under a stream of nitrogen, the residue is dissolved in 1 mL of acetonitrile and analyzed by reversed-phase HPLC with UV detection.

(EPA 600/4-89-017)


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.

Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   The sample is stable indefinitely per the method.
Preservatives:   None specified in the method.
Required Preps:   50mL Glass bottle with Teflon-lined lid
Collection Method:   Midget impinger train
Analytical Methodology:   HPLC/UV
Documentation:   TO-6

Analyte List*

Analyte Formula CAS Number Detection Limit

* 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.