02162naa a2200301 a 450000100080000000500110000800800410001902200140006002400560007410000190013024501370014926000090028630000150029552012440031065300250155465300120157965300110159165300190160265300210162170000230164270000220166570000200168770000200170770000180172770000260174570000250177177300640179621328122021-09-28       2021    bl uuuu     u00u1 u    #d  a0103-50537 ahttps://dx.doi.org/10.21577/0103-5053.202002352DOI1 aMACHADO, R. C.  aAlternative approaches applied to inductively coupled plasma techniquesbmulti-flow and two-flow calibration.h[electronic resource]  c2021  ap.842-851.  aMulti-flow calibration (MFC) is based on monitoring the analytical signal from a single calibration standard solution at several different nebulization gas flow rates (Q), which normalizes plasma conditions and minimizes matrix effects. In the present study, MFC was evaluated, for the first time, applied to inductively coupled plasma optical emission spectrometry (ICP OES) and inductively coupled plasma mass spectrometry (ICP-MS) to analyze different and complexmatrix samples. Al, As, Cd, Cr, Cu, Mn, Pb, and Zn were determined by ICP OES, while As, Cd, Co, Cu, Hg, Mo, Mn, Ni, Se, Sb, Pb, and V were determined by ICP-MS. MFC results were compared with those obtained using external standard calibration (EC) for both techniques and in all cases, MFC showed equal or superior accuracy (recoveries between 80-120%) compared to EC, and lower relative standard deviation (RSDs &lt 10%). Several tests were also performed using only two nebulization gas flows to build linear models for calibration (called two-flow calibration, TFC) and the accurate results (recoveries ranged from 80 to 110% for ICP OES and from 81 to 102% for ICP-MS) suggests that this strategy can be also applied, resulting in a method with high sample throughput.  aCalibration strategy  aICP OES  aICP-MS  aMatrix effects  aNebulization gas1 aSILVA, A. B. S. da1 aANDRADE, D. F. de1 aPINHEIRO, F. C.1 aWILLIAMS, C. B.1 aDONATI, G. L.1 aNOGUEIRA, A. R. de A.1 aPEREIRA FILHO, E. R.  tJournal of the Brazilian Chemical Societygv.32, n.4, 2021.