Evaluation and Application of the Internal Standard Technique for the Direct Determination of Copper in Fruit Juices Employing Fast Sequential Flame Atomic Absorption Spectrometry

Selective determination of copper and iron in various food samples by the solid phase extraction

“…The copper levels in fruit juices determined by Ferreira et al (2008) were between 0.02 and 0.42 mg L À1 .…”

Traditional Calibration Methods in Atomic Spectrometry and New Calibration Strategies for Inductively Coupled Plasma Mass Spectrometry

“…It has also been employed in elemental determinations using multi-channel GF AAS (Takada and Nakano, 1981 ). The development of graphite furnace simultaneous atomic absorption spectrometry (commercially named SIM AAS) and fast-sequential flame instruments contributed to increasing the number of applications involving the IS method in atomic absorption spectrometry (Radziuk et al, 1999 ; Fernandes et al, 2002 ; Correia et al, 2004 ; Oliveira et al, 2004 , 2005 ; Oliveira and Gomes Neto, 2007 ; Ferreira et al, 2008a , b ; Miranda et al, 2010 ; Caldas and Sanches Filho, 2013 ; Barkonikos et al, 2014 ; Pasias et al, 2014 ; Pereira et al, 2014 ). More recently, such applications have been further extended with the combination of an efficient continuum source, a high-resolution Echelle polychromator, and solid-state detectors in high-resolution continuum source F AAS (HR-CS F AAS) and HR-CS GF AAS.…”

Old and New Flavors of Flame (Furnace) Atomic Absorption Spectrometry

“…Notwithstanding, this aspect is being minimized using new instrumental arrangements. For instance, an FS-FAAS was used for the implementation of the internal standard technique for the direct determination of Cu in fruit juices [19]. Ferreira et al demonstrated that the use of In as internal standard improved the accuracy and the repeatability for Cu determination in nondigested juice samples.…”