Quantification method for elemental bio-imaging by LA-ICP-MS using metal spiked PMMA films

Publication Type:
Journal Article
Journal of Analytical Atomic Spectrometry, 2010, 25 (5), pp. 722 - 725
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A method for quantitative analysis of biological soft tissues by laser ablation-inductively coupled plasma-mass spectrometry has been developed. Polymer film standards were produced by spin coating spiked solutions of polymethylmethacrylate onto quartz substrates. Calibration curves throughout the range of 0-400 μg g-1 yielded correlation coefficients better than 0.999 for 66Zn and 63Cu. Spiked, homogenised soft tissue standards were quantified by LA-ICP-MS against the thin film standards. The results agreed with values calculated from solution nebulisation ICP-MS. A procedure for internal standardisation by employing ruthenium or yttrium in the underlying thin film was also assessed. © The Royal Society of Chemistry 2010.
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