Size distribution of trace elements determined by instrumental thermal neutron activation analysis
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Date
1978-10
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Publisher
Turkish Atomic Energy Commission, Ankara Nuclear Research and Traning Center
Abstract
Sonbahar ve kış aylarında (1976-1977) Ankara havasındaki partiküllerde bulunan eser elementler incelenmiştir. Bu çalışmada aletli termal nötron aktivasyon analizi uygulanarak Na, K, Sc, Cr, Fe, Co, Zn, As, Se,. Br, Rb, Sb, Cs, Ba, La, Ce, Eu, Hf, Hg ve Th elementleri incelenmiştir. Eylül, ekim, kasım, aralık, ocak, şubat ayları için derişimler ve partikül büyüklük dağılımları tayin edilmiştir. Bu elementlerin kütle - büyüklük fonksiyonları, kütle ortalama çapları bulunmuş ve Ankara toprağına ve yer kabuğuna göre zenginleşme çarpanları hesaplanmıştır. Bu aylar göz önüne alınarak ocak ayında toplam partikül miktarının maksimuma eriştiği izlenmiştir. Küçük partiküllerde rastlanan elementlerin zehirli elementler olduğu ve Ankara havasında zenginleştiği saptanmıştır.
Atmospheric particulates have been studied for their trace element contents in Ankara atmosphere during fall and winter months (1976 - 1977). Using instrumental thermal neutron activation analysis, the observed trace elements were Na, K, Sc, Cr, Fe, Co, Zn, As, Se, Br, Rb, Sb, Cs, Ba, La, Ce, Eu, Hf, Hg and Th. Their concentrations and particle size distributions were determined for six months, namely for September, October, November, December, January and February. Mass-median diameters, mass-size functions of these elements were estimated and enrichment factors of them with respect to both the soil of Ankara and crustal abundances were found out to be maximum in January. The elements found in small particulates were toxic and enriched in Ankara atmosphere.
Atmospheric particulates have been studied for their trace element contents in Ankara atmosphere during fall and winter months (1976 - 1977). Using instrumental thermal neutron activation analysis, the observed trace elements were Na, K, Sc, Cr, Fe, Co, Zn, As, Se, Br, Rb, Sb, Cs, Ba, La, Ce, Eu, Hf, Hg and Th. Their concentrations and particle size distributions were determined for six months, namely for September, October, November, December, January and February. Mass-median diameters, mass-size functions of these elements were estimated and enrichment factors of them with respect to both the soil of Ankara and crustal abundances were found out to be maximum in January. The elements found in small particulates were toxic and enriched in Ankara atmosphere.
Description
Keywords
Size distribution, Boyut dağılımı, Trace elements, Eser elementler, Determined, Belirlenmiş, Instrumental thermal neutron activation analysis, Enstrümantal termal nötron aktivasyon analizi
Citation
Somer, Ş. N. (1978). Size distribution of trace elements determined by instrumental thermal neutron activation analysis. Technical Journal, 5(2-3), 46-51.