SW-846 Test Method 0061: Determination of Hexavalent Chromium Emissions from Stationary Sources
Method 0061 Hexavalent Chromium Emissions from Stationary Sources determines hexavalent chromium emissions from hazardous waste incinerators, municipal waste incinerators, municipal waste combustors and sewage sludge incinerators.
For incinerators and combustors, the Cr emissions are collected isokinetically from +6
the source: To eliminate the possibility of Cr reduction between the nozzle and impinger, the
+6 emission samples are collected with a recirculatory train where the impinger reagent is continuously recirculated to the nozzle. Recovery procedures include a post-sampling purge and filtration. The impinger train samples are analyzed for Cr by an ion chromatograph equipped with a post-column +6 reactor and a visible wavelength detector. The IC/PCR separates the Cr as chromate (CrO ) from +6 = 4 other diphenylcarbazide reactions that occur in the post-column reactor. To increase sensitivity for trace levels of chromium, a preconcentration system may also be used in conjunction with the IC/PCR.
For more information and documents about Method 0061, please consult the EPA's Method 0061 webpage.
Apex Instruments offers a Method 0061 Impinger Train. If interested in Method 0061 sampling, Apex Instruments works with our customers to make sure we are providing the correct products for your project and will provide you with a price quote. For any questions about our impinger train, please contact sales@apexinst.com.