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Analysis of inorganic compounds in stack emission samples

Sampling & analysis of inorganic compounds in stack emission samples.

Inorganic analysis of stack emissions is typically directed towards compounds that can contribute to acid rain like nitrogen and sulphur dioxide.


Analytical method & sampling procedure


SULPHUR DIOXIDE EMISSIONS FROM STATIONARY SOURCES – EPA Methods 6, 8 and CTM-013

Method 6 is for SO2 while Method 8 and CTM-013 provide speciated determination of SO2 and SO3 (i.e. H2SO4)

SO3 (or H2SO4) emissions are captured either by impingement through 80% IPA (method 6 and 8) or by condensation (CTM-013). SO2 is captured and converted into sulphate by reaction with aqueous hydrogen peroxide in impingers. SO2 and SO3 are assayed as sulphate either by IC or by barium-thorin titration.


AMMONIA FROM STATIONERY SOURCES

Air samples are collected using a solution impinger of sulfuric acid. Samples are analysed by photometry after distillation.

Note: Impinger solution volumes are recorded prior to analysis and are included on the ALS report to enable concentrations to be calculated as mg of analyte per m3.


OXIDES OF NITROGEN (NOx) FROM STATIONERY SOURCES – EPA Methods 7A & 7D

Oxides of nitrogen are captured in oxidizing impinger reagents and converted to nitrate. Total NOx is assayed by the determination of nitrate by IC.

Related services

Analyse des métaux dans les échantillons d’émissions atmosphériques.

Une variété de métaux peut être présente dans les émissions. Beaucoup d’entre eux peuvent avoir un impact négatif sur l’environnement et, par conséquent, une surveillance est nécessaire

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Analyse des COSV dans les échantillons d’émissions atmosphériques

ALS propose un portefeuille complet d’équipements de test et d’échantillonnage pour les COSV dans les émissions.

PLUS D’INFORMATIONS

Analyse des COV dans les échantillons d’émissions atmosphériques

Les émissions de COV doivent être surveillées dans les échantillons atmosphériques et d’émissions en raison de l’impact négatif potentiel sur l’environnement.

PLUS D’INFORMATIONS
 
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