Application of multivariate curve resolution-alternating least squares for the determination of boron isotope ratios by inductively coupled plasma-optical emission spectrometry |
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| Institution: | 1. DST-NRF Centre of Excellence in Strong Materials and School of Physics, University of the Witwatersrand, Private Bag 3, P.O. Wits, Johannesburg 2050, South Africa;2. School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom;3. Light Metals, Materials Science & Manufacturing, Council for Scientific and Industrial Research, Meiring Naudé Road, Brummeria, Pretoria 0185, South Africa;4. iThemba LABS (Gauteng), Private Bag 11, P.O. Wits, Johannesburg 2050, South Africa;1. Graduate School Environmental Studies, Tohoku University, 6-6-01 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan;2. Institute of Multidisciplinary Research for Advanced Material, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;3. National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, AIST Tsukuba Central 5, Tsukuba, Ibaraki 305-8565, Japan |
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| Abstract: | Multivariate curve resolution-alternating least squares (MCR-ALS) was applied to atomic emission data obtained from inductively coupled plasma-optical emission spectrometry analysis of boron for the quantification of 10B/11B ratios. The determination of isotopic composition of boron is based on the isotopic shift of 10B and 11B in the emission line of 208.957 nm. After recording of the emission spectra in the range of 208.940–208.970 nm, evaluation of isotopic composition of boron containing samples was performed with MCR-ALS algorithm. MCR-ALS was able to resolve the emission spectra of 10B and 11B mixtures. The performance of the proposed methods was tested by determination of 10B/11B ratios in synthetic mixtures and also water samples. |
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