Method of and apparatus for the continuous emissions monitoring

Details Method of and apparatus for the continuous emissions monitoring Method of and apparatus for the continuous emissions monitoring

1995-10-03

1997-01-21

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356 36, 356243, G01J 3443, G01N 2173

Patent

active

055964052

ABSTRACT:
A portable apparatus for continuous real-time measurement of airborne met, comprising an isokinetic sampler, a sample line, a sampling interface device, a pump, and an inductively coupled plasma atomic emission spectrometry (ICP-AES). A method for measurement of airborne metals by use of such an apparatus is also described, in which the sampling interface device accommodates the high, continuous sample collection flow-rates necessary for isokinetic sampling while at the same time permits sample air to be introduced into the plasma at preferred moderate flow-rates. A method for field standardization of the ICP-AES is also described whereby a relationship between aqueous solutions of metals and their aerosol counterparts is established, thus later allowing the field use of the aqueous metal solutions to simulate a particular range of airborne metal concentrations.

REFERENCES:
patent: 5315369 (1994-05-01), Zadgorska et al.

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