Air pollution measurements in a semi-arid zone, using neutron activation analysis

Gad Shani; David Cohen

doi:10.3402/tellusa.v29i6.11388

Air pollution measurements in a semi-arid zone, using neutron activation analysis

Tellus

Volume 29 (1977): Issue 6

By: Gad Shani and David Cohen

Open Access

|Jan 1977

Abstract

Neutron activation analysis was used for measurement of air pollution in a semi-arid zone. After a careful selection of the air filter, air samples were filtered in the city of Beer-Sheva in the south of Israel.

The sampling took place over a period of 2 months with each sampling period lasting 2 days. The samples were irradiated in a thermal neutron flux of the order of 10¹³ n/cm² sec for 1 h and the gamma spectrum was measured several times. The concentration of elements was concluded from the measured gamma spectrum. Several conclusions were obtained by combining the weather conditions with the measurement results.

The air pollution can be divided into several sources: dust of a certain origin containing Fe, Co, Cr, Sc, Th and Na (probably from the Dead Sea area), other dust sources containing Sb, Eu, and Hf, and urban pollution due to industry and transportation—Br, Hg. The air pollution has its maxima and minima according to weather or industrial conditions. The pollution requires 4 days to clear out. Other relations to weather conditions were also found.

References

Dams , R. , Robbins , J. A. , Rohn , K. A. and Winchester , J. W . 1970 . Nondestructive neutron activation analysis of air pollution particulates. Anal. Chem . 42 , 86 1 .
Search in Google Scholar Back to article
Dams , R. , Rahn , K. A. and Winchester , J. W . 1972 . Evaluation of filter materials and impaction surfaces for non-destructive neutron activation analysis of aerosols. Env. Sci. and Tech. 6, No. 5,441.
Search in Google Scholar Back to article
De Regge , P. , Lievens , F. , Delespahl , I. and Thonsecour , M . 1976 . Intercomparison of neutron activation analysis with other instrumental methods for ele- mental analysis of airborne particulates . Int. Symp. on Development of Nuclear Based Techniques for Measurement of nmental Pollution. IAEA , Vienna .
Search in Google Scholar Back to article
Duce , R. A. and Winchester , J. W . 1965 . Determination of iodine, bromine and chlorine in atmospheric samples by neutron activation analysis. Radiochim. Acta 4 , 100 – 104 .
Search in Google Scholar Back to article
Gray , D. et al. 1972 . Determination of the trace element levels in atmospheric pollution by instrumental nneutron activation analysis . University of Missouri , Columbia , Missouri .
Search in Google Scholar Back to article
Jervis , R. E. , Paciga , J. J. and Chattopadhyay , A . 1976 . Characterization of urban aerosols and their hazard assessment by INAA and IPAA . Int. Symp. on Development of Nuclear Based Techniques for Measurement of Environmental Pollution , IAEA Vienna .
Search in Google Scholar Back to article
Parkinson , T. F. and Grant , L. G . 1963 . Activation analysis of particulate air contaminants. Nature 197 , 479 – 480 .
Search in Google Scholar Back to article
Shani , G. , Hadari , Z. and Cohen , D . 1973 . Measurement of atmospheric bromine content in Beer-Sheva, using the activation analysis method. Proc. of the Fourth Scientific Conference of the Israel Ecological Society.
Search in Google Scholar Back to article
Shani , G. and Haccoun , A . 1976 . Nuclear methods used to compare air pollution in a city and a pollution-free area . Int. Symp. on Development of Nuclear Based Techniques for Measurement of Environmental Pollution , Vienna .
Search in Google Scholar Back to article
Tuttle , R. F. , Vogt , J. R. and Parkinson , T. F . 1971 . Neutron activation analysis of three elements in airborne particulates. Nuclear Techniques in Enuironmental Pollution, 1 19-136. IAEA Vienna.
Search in Google Scholar Back to article
Van der Sloot , H. A. and Luten , J . 9. 1976 . Two applications of neutron activation for trace analysis of water samples . Int. Symp. on Development of Nuclear Based Techniques for Measurement of Environmental Pollution , Vienna .
Search in Google Scholar Back to article
Winchester , J. W . 1965 . Neutron activation analysis of halogens in the atmosphere. Trans. Amer. Nucl. Soc . 8 , 326 – 327 .
Search in Google Scholar Back to article
Zoller , W. H. and Gordon , G. E . 1970 . Instrumental neutron activation analysis of atmospheric pollutants utilizing Ge(Li) gamma ray detector. Anal. Chem . 42 , 257 .
Search in Google Scholar Back to article