Determination of sulfuric acid mist in atmosphere by benzaldehyde extraction and reinjection ion chromatography.

Determination of Anions in Acid Rain by Ion Chromatography

INTRODUCTION The increase in acidity of wet and dry atmospheric depositions has been attributed to the increase of SO 2 and NO 2 emissions from stationary and mobile pollution sources. The acid rain problem has reached dramatic proportions throughout many regions of the United States, Europe, Canada, and Japan. Monitoring air and rain is essential, not only for assessing the effects of pollutan...

New methods for fighting sulfuric acid mist emissions

igh-efficiency entrainment removal devices have successfully met a H combination of challenges posed by the mist generated in the manufacture of sulfuric acid. Tightened regulations, increased sensitivity to the cost of downstream corrosion, and the desire to extend the life of mist eliminators have combined to prompt sulfuric acid manufacturers to seek improved emissions-control performance in...

Ammonia in sulfuric acid ion induced nucleation

I. K. Ortega, T. Kurtén, H. Vehkamäki, and M. Kulmala Division of Atmospheric Sciences, Department of Physical Sciences, P.O. Box 64, 00014 University of Helsinki, Finland Received: 9 January 2008 – Accepted: 13 February 2008 – Published: 17 March 2008 Correspondence to: I. K. Ortega ([email protected]) Published by Copernicus Publications on behalf of the European Geosciences Un...

extraction and determination of nalidixic acid from tablet matrix by molecular imprinted polymer and determination by high performance liquid chromatography

EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF AMMONIUM ION BY DIBENZO- 18-CROWN-6 AND CALMAGITE

An extraction-spectrophotometric method for the determination of trace amounts of ammonium ion is described. Ammonium ion is effectively extracted as a neutral ternary complex NH . DB 18C6. calmagite at pH 3.0 into chloroform, followed by spectrophotometric determination at =48 5 nm. Molar absorptivity of the ternary complex at this wavelength is 1.08 10 mol cm . Beer's law is obeyed over...