01675naa a2200229 a 450000100080000000500110000800800410001902400540006010000190011424501640013326000090029752008940030665000120120065300320121265300150124470000170125970000240127670000160130070000220131670000260133877300810136420654702019-03-27       2016    bl uuuu     u00u1 u    #d7 ahttp://dx.doi.org/10.5935/0103-5053.201600982DOI1 aMACHADO, R. C.  aEvaluation of inductively coupled plasma tandem mass spectrometry for determination of as in agricultural inputs with high REE contents.h[electronic resource]  c2016  aIn the present work, an inductively coupled plasma-tandem mass spectrometer (ICP-MS/MS) operating in single quadrupole and mass shift modes were evaluated for As determination in mineral fertilizers and agricultural gypsum with high contents of rare earth elements. For MS/MS mode, oxygen was the gas introduced into the octopole reaction system (ORS3 ). Samples were prepared by microwave-assisted digestion with diluted nitric acid solution. The accuracy was checked by analysis of a fertilizer certified reference material (NIST SRM 695) and by addition and recovery experiments. When operating in single quadrupole mode, recoveries ranged from 59 to 151%; while values obtained by MS/MS mode varied from 81 to 105% when 0.30 mL min-1 O2 was introduced into the ORS3 . Limits of detection for As+ in single quadrupole and AsO+ in MS/MS mass shift mode were 6 and 9 ng L-1, respectively.  aarsenic  aDouble charged interference  aFertilizer1 aVIRGILIO, A.1 aAMARAL, C. D. B. do1 aSCHIAVO, D.1 aNOBREGA, J. de A.1 aNOGUEIRA, A. R. de A.  tJournal of the Brazilian Chemical Societygv. 27, n. 11, p. 2076-2081, 2016.