01661naa a2200217 a 450000100080000000500110000800800410001910000200006024501660008026000090024652009470025565300210120265300210122365300230124465300240126765300170129170000170130870000200132570000260134577300720137119904222023-03-20       2013    bl uuuu     u00u1 u    #d1 aCRISPINO, C. C.  aSimultaneous determination of arsenic, antimony and selenium in agronomic samples by hydride generation and optical emission spectrometry.h[electronic resource]  c2013  aA continuous-fl ow hydride generation system was developed and used with inductively coupled plasma optical emission spectrometry (ICP OES) for simultaneous determination of As, Sb and Se in agronomic samples. A factorial design was applied in order to establish the best chemical and instrumental conditions. The factors chosen for evaluation were: reagent concentration, plasma power, carrier gas fl ow rate, and the viewing height of the plasma. The LODs of the method were 0.124, 0.168, and 0.141 ?g L-1 for As, Sb, and Se, respectively. The RSD (relative standard derivation) was lower than 1.8%, and the sampling throughput was 40 samples h-1 . To check the method accuracy, eight different kinds of agronomic samples - for- age, corn silage, mineral salt, and bovine-derived samples (blood, viscera, carcass, meat, and semen) - were spiked with different analyte concentrations (at the ?g L-1 level). Recoveries ranged from 90 to 102%.  aAgronomic sample  aFactorial design  aHydride generation  aInductively coupled  aSpectrometry1 aLEMOS, S. G.1 aKANOGAWA, M. Y.1 aNOGUEIRA, A. R. de A.  tBrazilian Journal of Analitical Chemistrygv. 10, p. 460-467, 2013.