000107336 001__ 107336 000107336 005__ 20240122154814.0 000107336 0247_ $$2doi$$a10.1039/d0ja00359j 000107336 0248_ $$2sideral$$a121252 000107336 037__ $$aART-2020-121252 000107336 041__ $$aeng 000107336 100__ $$aGarde, Raúl$$uUniversidad de Zaragoza 000107336 245__ $$aIntroducing multi-energy ratios as an alternative to multi-energy calibration for Br determination: Via high-resolution continuum source graphite furnace molecular absorption spectrometry. A case study 000107336 260__ $$c2020 000107336 5060_ $$aAccess copy available to the general public$$fUnrestricted 000107336 5203_ $$aThis manuscript explores the advantages of using multi-signal calibration approaches for the determination of non-metals via high-resolution continuum source graphite furnace molecular absorption spectrometry (HR CS GFMAS), targeting Br as an example. Besides multi-energy calibration (MEC), a novel approach deriving from it, multi-energy ratios (MER), is introduced and compared under different conditions. This approach makes use of the same data but in a different way, such that no linear regression is performed; instead, ratios are calculated. This article investigates the potential errors deriving from the use of amounts of spike dissimilar from the sample content, leading to too high (close to 1) or too low (close to 0) slopes/ratios, setting the best conditions in terms of precision and accuracy for the intended determination in the range of approx. 0.5 to 0.6. Also, situations where the use of MER could be recommended over MEC are identified: namely when only a few transitions of sufficient sensitivity and free from overlaps are available or else, many transitions but of similar sensitivity, which may occur when HR CS GFMAS is deployed. Otherwise, for multiple transitions covering a wider sensitivity range, use of linear regression and thus, of MEC, seems favoured, as a better precision can be achieved. The calculation of limits of detection and quantification for both approaches is also discussed. It is finally further demonstrated that these multi-signal strategies help in solving chemical interferences, which very often hamper the determination of non-metals with HR CS GFMAS, and they do so in a simple way, without the need for laborious work or for the preparation of several standards and sample aliquots, therefore making them a very intriguing option when this technique is deployed. 000107336 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón$$9info:eu-repo/grantAgreement/ES/FEDER/Interreg POCTEFA 176-16-DBS$$9info:eu-repo/grantAgreement/ES/MCIU-AEI-FEDER/PGC2018-093753-B-I00$$9info:eu-repo/grantAgreement/ES/MCIU/BES-2016-078971$$9info:eu-repo/grantAgreement/ES/MCIU/CTQ2015-64684-P 000107336 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000107336 590__ $$a4.023$$b2020 000107336 591__ $$aSPECTROSCOPY$$b7 / 43 = 0.163$$c2020$$dQ1$$eT1 000107336 591__ $$aCHEMISTRY, ANALYTICAL$$b23 / 83 = 0.277$$c2020$$dQ2$$eT1 000107336 592__ $$a0.899$$b2020 000107336 593__ $$aSpectroscopy$$c2020$$dQ1 000107336 593__ $$aAnalytical Chemistry$$c2020$$dQ1 000107336 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000107336 700__ $$0(orcid)0000-0001-7087-9901$$aVenancio Nakadi, Flávio$$uUniversidad de Zaragoza 000107336 700__ $$0(orcid)0000-0003-2640-8496$$aGarcía-Ruiz, Esperanza$$uUniversidad de Zaragoza 000107336 700__ $$0(orcid)0000-0002-7450-8769$$aResano, Martín$$uUniversidad de Zaragoza 000107336 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica 000107336 773__ $$g35, 11 (2020), 2606-2619$$pJ. anal. at. spectrom.$$tJournal of Analytical Atomic Spectrometry$$x0267-9477 000107336 8564_ $$s4698566$$uhttps://zaguan.unizar.es/record/107336/files/texto_completo.pdf$$yPostprint 000107336 8564_ $$s1552818$$uhttps://zaguan.unizar.es/record/107336/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000107336 909CO $$ooai:zaguan.unizar.es:107336$$particulos$$pdriver 000107336 951__ $$a2024-01-22-15:35:11 000107336 980__ $$aARTICLE