Direct determination of lanthanides, yttrium and scandium in bauxites and red mud from alumina production

Ochsenkuhn-Petropulu, M; Tyberopulu, Th; Parissakis, G

dc.contributor.author	Ochsenkuhn-Petropulu, M	en
dc.contributor.author	Tyberopulu, Th	en
dc.contributor.author	Parissakis, G	en
dc.date.accessioned	2014-03-01T01:09:51Z
dc.date.available	2014-03-01T01:09:51Z
dc.date.issued	1994	en
dc.identifier.issn	0003-2670	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11207
dc.subject	Atomic emission spectrometry	en
dc.subject	Bauxites	en
dc.subject	Inductively coupled plasma spectrometry	en
dc.subject	Lanthanides	en
dc.subject	Red mud	en
dc.subject	Scandium	en
dc.subject	X-ray fluorescence spectrometry	en
dc.subject	Yttrium	en
dc.subject.classification	Chemistry, Analytical	en
dc.subject.other	lanthanide	en
dc.subject.other	scandium	en
dc.subject.other	yttrium	en
dc.subject.other	article	en
dc.subject.other	geology	en
dc.subject.other	methodology	en
dc.subject.other	priority journal	en
dc.subject.other	quantitative assay	en
dc.subject.other	X ray fluorescence	en
dc.title	Direct determination of lanthanides, yttrium and scandium in bauxites and red mud from alumina production	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0003-2670(94)80250-5	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0003-2670(94)80250-5	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	An analytical procedure for the rapid, accurate and reproducible determination of lanthanides, yttrium and scandium in iron-aluminium rich matrices as bauxites and red mud from alumina production was developed. After a suitable dissolution, the samples were directly analysed for these elements by inductively coupled plasma atomic emission spectroscopy (ICP-AES), without using any separation or preconcentration step. Some of the investigated elements were also directly determined in the solid samples by x-ray fluorescence analysis (XRF). The optimum conditions and analytical wavelengths were selected by both methods for each investigated element, after detailed studying of the spectral interferences from the major elements from the matrix and the interlanthanide-interferences. In the unique reference bauxitic material BX-N, for which only some proposed values exist, the concentration of nearly all lanthanides, yttrium and scandium Sc could be determined. The precision and accuracy of the described ICP-AES and XRF methods for these elements were tested on the geological standard materials SY-2, SY-3 (Canadian syenites) and the proposed values of BX-N. In this study the enrichment factor of the above mentioned elements in red mud were also determined in comparison to the feed bauxites and the constancy of the concentration level in productions samples, followed up over three years. The obtained results for the lanthanides were evaluated on the basis of chondrite normalized distribution patterns.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Analytica Chimica Acta	en
dc.identifier.doi	10.1016/0003-2670(94)80250-5	en
dc.identifier.isi	ISI:A1994PM14000011	en
dc.identifier.volume	296	en
dc.identifier.issue	3	en
dc.identifier.spage	305	en
dc.identifier.epage	313	en