caa a22 4500 469111518 CHVBK 20180323133112.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02047130 doi (NATIONALLICENCE)springer-10.1007/BF02047130 Determination of oxygen impurity in high purity materials by charged particle activation analysis using alpha projectiles [Elektronische Daten] [D. Chowdhury, J. Arunachalam, Rakesh Verma, Sujit Pal, S. Gangadharan] 40 MeV α-particles have been used to determine oxygen impurity at ppm levels in silicon, copper, and stainless steel, through the radiochemical separation of18F from the matrix. The separation of18F has been carried out by two techniques, viz.(1) distillation of H2SiF6 and (2) precipitation of KBF4 and some modification has been applied in the separation, depending on the nature of interferences from the matrix. Instrumental approach was also carried out to determine the oxygen impurity at ≥ 100 ppm in Si matrix because this approach is not possible in Cu and stainless steel samples due to matrix activity. Akadémiai Kiadó, 1992 Chowdhury D. Analytical Chemistry Division, Variable Energy Cyclotron Centre, Bhabha Atomic Research Centre, Bidhan Nagar, 700 064, Calcutta, (India) aut Arunachalam J. Analytical Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, (India) aut Verma Rakesh Analytical Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, (India) aut Pal Sujit Analytical Chemistry Division, Variable Energy Cyclotron Centre, Bhabha Atomic Research Centre, Bidhan Nagar, 700 064, Calcutta, (India) aut Gangadharan S. Analytical Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, (India) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 463-470 0236-5731 158:2<463 1992 158 10967 https://doi.org/10.1007/BF02047130 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02047130 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chowdhury D. Analytical Chemistry Division, Variable Energy Cyclotron Centre, Bhabha Atomic Research Centre, Bidhan Nagar, 700 064, Calcutta, (India) aut NATIONALLICENCE 700 1- Arunachalam J. Analytical Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, (India) aut NATIONALLICENCE 700 1- Verma Rakesh Analytical Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, (India) aut NATIONALLICENCE 700 1- Pal Sujit Analytical Chemistry Division, Variable Energy Cyclotron Centre, Bhabha Atomic Research Centre, Bidhan Nagar, 700 064, Calcutta, (India) aut NATIONALLICENCE 700 1- Gangadharan S. Analytical Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, (India) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 463-470 0236-5731 158:2<463 1992 158 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer