简介:2.1 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简介:2.1 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.详细>