Chemical Forums
Specialty Chemistry Forums => Chemical Engineering Forum => Topic started by: RWalston on October 16, 2006, 03:06:29 PM
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I would like to test for arsine, arsenic, phosphine, and phosphorus compounds in an exhaust stream. the concentrations are going to be very low. I have a Zellweger CM4 monitor calibrated for arsine continuously monitoring hydrides on an outlet of carbon abatement. I detect between 2 and 3 ppb hydrides in about 1000 cfm stream. Exhaust from three of these carbon units (roughly 1000 cfm and 2-3 ppb hydrides each) are routed to a common exhaust with further air dilution. I am looking for an EPA test method that would be able to selectively measure low concentrations of arsine, phosphine, arsenic, and phosphorus compounds.
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Hello RWalston,
Since you are saying that the method must be an EPA test method, here are links to the EPA website:
Test methods are at: http://www.epa.gov/epahome/index/
The general EPA website is at: http://www.epa.gov
There are many other options available, unfortunately, they are not EPA approved.
Cheers,
Eugene