Abstract
Sodium arsenite (modified Jacobs and Hochheiser method; hereafter referred as SA), the most widely used manual monitoring method for determination of nitrogen dioxide (NO2) in ambient air, particularly in developing countries has been evaluated and compared with US EPA recommended equivalent method of TGS-ANSA (hereafter referred as ANSA). NO2 concentrations generated from laboratory test atmosphere were analyzed by these two methods and were compared statistically. Laboratory evaluations showed that SA method has high sensitivity to different sampling conditions, which normally vary during actual field monitoring. Hence, correction factors for absorption efficiency were estimated for SA and ANSA methods. Absorption efficiency of NO2 in SA method was found to be much lower (64%) as against the reported value of 82% at the method recommended sampling conditions, whereas for ANSA method, it was found 1.0 as against the reported value of 0.93. After applying derived correction factors, both the methods produced almost similar concentration values of NO2.
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References
Beard, M. E. and Margeson, J. H., 1974, 'An Evaluation of Arsenite Procedure for Determination of Nitrogen Dioxide in Ambient Air', US EPA Report No. 650/4-74-048, November, PB 239 737.
Christie A. A., Lidzey R. G. and Radford, D. W. F.: 1970, 'Field method for the determination of nitrogen dioxide in air', Analyst 95, 519-524.
Fuerst, R. G. and Margeson, J. H.: 1974, 'An Evaluation of TGS-ANSA Procedure for Determination of Nitrogen Dioxide in Ambient Air', US EPA Report No. 650/4-74-047, November, PB 238 097.
Goyal, S. K.: 1999, 'Measurement of NO2 in ambient air: Effect of bubbler type and sample flow rate', Indian J. Environ. Protect. 9(3), 161-165.
Goyal, S. K., Gavane, A. G. and Aggarwal, A. L.: 2000, 'Effect of temperature on absorption efficiency of NO2 in arsenite method', Environ. Monit. Assess. 61(2), 283-289.
Goyal, S. K.: 2002, 'Effect of sample flow rate and sampling duration on absorption of NO2 in the sodium arsenite method', J. Environ. Monit. 4(4), 579-682.
Harrison, R. H. and Perry, R.: 1986, Handbook of Air Pollution Analysis. 2nd ed., Champman and Hall Publication, New York.
Levaggi, P. A., Siu, W. and Feldstein, M.: 1973, 'A new method for measuring average 24-hour nitrogen dioxide concentrations in the atmosphere', J. Air Pollut. Control Assoc. 23(4), 30-33.
Margeson, J. H., Beard, M. E. and Suggs, J. C.: 1977, 'Evaluation of sodium arsenite method for measurement of NO2 in ambient air', J. Air Pollut. Control Assoc. 27(6), 553-556.
Nash, T.: 1970, 'An efficient absorbing reagent for nitrogen dioxide', Atmos. Environ. 4, 661-665.
UNEP/WHO: 1994, 'GEMS/AIR Methodology Review Handbook Series, Vol. 4-Passive and Active Sampling Methodologies for Measurement of Air Quality', WHO/EOS/94.4, UNEP Nairobi.
US EPA: 1977, 'TGS-ANSA Method for Determination of Nitrogen Dioxide in the Atmosphere', EPA Designated Equivalent Method No. EQN. 1277-028.
US EPA: 1975, 'Comparison of Methods for Determination of NO2 in Ambient Air', Environmental Monitoring Series, EPA 650/4-75-023.
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Goyal, S.K. Comparison of Two Manual Methods of Nitrogen Dioxide Determination in Ambient Air. Environ Monit Assess 89, 305–314 (2003). https://doi.org/10.1023/A:1026179030146
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DOI: https://doi.org/10.1023/A:1026179030146