Authors:
Sabiha-Javied Department of Chemical and Environmental Engineering PIEAS, P.O. Nilore Islamabad 45650 Pakistan

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S. Waheed Pakistan Institute of Science and Technology Chemistry Division, Directorate of Science P.O. Nilore Islamabad 45650 Pakistan

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N. Siddique Pakistan Institute of Science and Technology Chemistry Division, Directorate of Science P.O. Nilore Islamabad 45650 Pakistan

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M. Tufail Department of Nuclear Engineering PIEAS, P.O. Nilore Islamabad 45650 Pakistan

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M. Chaudhry Department of Chemical and Environmental Engineering PIEAS, P.O. Nilore Islamabad 45650 Pakistan

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N. Irfan Department of Chemical and Environmental Engineering PIEAS, P.O. Nilore Islamabad 45650 Pakistan

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Abstract  

The concentration of 32 elements was determined in phosphate rock samples from the Hazara phosphate deposits of Pakistan using instrumental neutron activation analysis (INAA) technique employing different irradiation protocols. These included 23 major, minor and trace elements (Al, As, Ba, Br, Co, Cr, Cs, Fe, Ga, Hf, K, Mn, Na, Rb, Sb, Sc, Sn, Ta, Th, U, V, Zn and Zr) and 9 rare earth elements (REEs) namely Ce, Eu, Ho, La, Lu, Nd, Sm, Tb and Yb. The results have been compared with the global values of these elements. The concentrations for most of the elements studied are lower than the concentrations reported in the literature whereas the concentrations of As, Co, Fe, K, Mn, Na and Sb are comparable. Two samples namely HR-4 and HR-5 have the highest concentrations for majority of the REFs with high enrichment factors. The quality assurance of data was performed through the concurrent use of Lake Sediment (SL-1) and GSJ-JR-1 (Rhyolite) reference materials. The acquired data will serve as a reference for the follow-up studies to assess the agronomic effectiveness of the Hazara phosphate rocks.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)