naa a22 4500 510756158 CHVBK 20180411083123.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s12594-013-0200-x doi (NATIONALLICENCE)springer-10.1007/s12594-013-0200-x Wavelength-dispersive X-ray fluorescence spectrometric determination of Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th in komatiites [Elektronische Daten] [S. Viswanathan, K. Surya Prakash Rao, B. Mahabaleswar] Komatiites are mantle-derived ultramafic volcanic rocks. Komatiites have been discovered in several States of India, notably in Karnataka. Studies on the distribution of trace-elements in the komatiites of India are very few. This paper proposes a simple, accurate, precise, rapid, and non-destructive wavelength-dispersive x-ray fluorescence (WDXRF) spectrometric technique for determining Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th in komatiites, and discusses the accuracy, precision, limits of detection, x-ray spectral-line interferences, inter-element effects, speed, advantages, and limitations of the technique. The accuracy of the technique is excellent (within 3%) for Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Zr, Nb, Ba, Pb, and Th and very good (within 4%) for Y. The precision is also excellent (within 3%) for Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th. The limits of detection are: 1 ppm for Sc and V; 2 ppm for Cr, Co, and Ni; 3 ppm for Cu, Zn, Rb, and Sr; 4 ppm for Y and Zr; 6 ppm for Nb; 10 ppm for Ba; 13 ppm for Pb; and 14 ppm for Th. The time taken for determining Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th in a batch of 24 samples of komatiites, for a replication of four analyses per sample, by one operator, using a manual WDXRF spectrometer, is only 60 hours. Geological Society of India, 2013 X-ray spectrometry nationallicence WDXRFS nationallicence Trace-elements nationallicence Komatiites nationallicence Viswanathan S. Flat B-203, Block-B, United Avenue Apartments, South End, 7-1-29, Ameerpet, Hyderabad, India aut Surya Prakash Rao K. 1-2-98, Kakatiyanagar, Habsiguda, Hyderabad, India aut Mahabaleswar B. Department of Geology, Bangalore University, Bangalore, India aut Journal of the Geological Society of India Springer India 82/6(2013-12-01), 621-627 0016-7622 82:6<621 2013 82 12594 https://doi.org/10.1007/s12594-013-0200-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0200-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Viswanathan S. Flat B-203, Block-B, United Avenue Apartments, South End, 7-1-29, Ameerpet, Hyderabad, India aut NATIONALLICENCE 700 1- Surya Prakash Rao K. 1-2-98, Kakatiyanagar, Habsiguda, Hyderabad, India aut NATIONALLICENCE 700 1- Mahabaleswar B. Department of Geology, Bangalore University, Bangalore, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/6(2013-12-01), 621-627 0016-7622 82:6<621 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer