01826naa a2200253 a 450000100080000000500110000800800410001902400550006010000210011524501540013626000090029052010770029965000170137665000090139365300070140265300090140965300180141865300160143665300070145270000210145970000260148070000200150677300460152610469922022-05-06       2004    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/j.talanta.2004.04.0042DOI1 aNASCENTES, C. C.  aDirect determination of Cu and Zn in fruit juices and bovine milk by thermospray flame furnace atomic absorption spectrometry.h[electronic resource]  c2004  aIn the present work, thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) was employed for Cu and Zn determination in bovine milk and fruit juice samples without any pretreatment. TS-FF-AAS system was optimized and a sample volume of 300 ?l was injected into the carrier stream (0.014 mol l?1 HNO3 at a flow rate of 0.4 ml min?1), and it was introduced into a hot Ni tube. The detection limits obtained for Cu and Zn in aqueous solution were 2.2 and 0.91 ?g l?1, respectively, and 3.2 ?g l?1 for Cu in a medium containing water-soluble tertiary amines. The relative standard deviations varied from 2.7 to 4.2% (n=12). Sample preparation was carried out by simple dilution in water or in water-soluble tertiary amines medium. Accuracy was checked by performing addition-recovery experiments as well as by using reference materials (whole milk powder, non-fat milk powder, and infant formula). Recoveries varied from 97.7 to 105.3% for Cu and Zn. All results obtained for reference materials were in agreement with certified values at a 95% confidence level.  aFruit juices  aMilk  aCu  aFAAS  aFlame furnace  aThermospray  aZn1 aARRUDA, M. A. Z.1 aNOGUEIRA, A. R. de A.1 aNÓBREGA, J. A.  tTalantagv.64, n.4, p.912-917, nov. 2004.