Determination of arsenic by atomic absorption spectrometry with an electrodeless discharge lamp as a source of radiation

Menis, Oscar; Rains, T. C.

doi:10.1021/ac60276a024

Cited by 29 publications

(10 citation statements)

References 16 publications

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“…At most, the molecular concentration of sulphate originating from CCA treatment would equal the concentration of copper (6 to 8 μ% ml-1 ). According to Menis and Ranis (1969) HC1 and HNO 3 at ι Μ concentrations do not affect the determination of arsenic in argon (entrained air) -hydrogen flame. Suppression by acids (H 2 SO 4 , HC1O 4 and HC1) of Cu but not Zn signals in oxy-hydrogen and oxy-acetylene flames was reported by Ramakrishna et al (1967).…”

Section: Discussionmentioning

confidence: 97%

“…Of the various mineral acids, HC1 appears to cause least interference with CCA-Zn metals in AAS (Christian and Feldman 1970;Lambert 1969;Menis and Ranis 1969;Ramakrishna et al 1967;Maruta et al 1970;Kirkbright and Ranson 1971;Hurlbut and Chriswell 1971) and this conclusion is held by Barnett (1972) who examined the effect of mineral acids on Cu, Cr, Mn and Ni. Of the various mineral acids, HC1 appears to cause least interference with CCA-Zn metals in AAS (Christian and Feldman 1970;Lambert 1969;Menis and Ranis 1969;Ramakrishna et al 1967;Maruta et al 1970;Kirkbright and Ranson 1971;Hurlbut and Chriswell 1971) and this conclusion is held by Barnett (1972) who examined the effect of mineral acids on Cu, Cr, Mn and Ni.…”

Section: Introductionmentioning

confidence: 97%

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Determination of Cu-Cr-As and Zn in Preserved Wood by Atomic Absorption Spectroscopy

Johanson¹

1973

Holzforschung

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The determination by atomic absorption spectroscopy of copper, chromium, arsenic (CCA) and zinc in treated pine and eucalypt wood is described. Oxidative treatment of shavings with 3.3 M HC1 in the presence of H 2 O 2 solubilizes the fixed components in 2 min at ioo°Cj the components then diffuse into the diluted extract in 10 to 20 min. The Cu, Cr, As, Zn in the extract are determined after filtration. The retention range of CCA-Zn in wood tested was 1.9 to 19 kg m~3. Overall errors for single determinations of Cu at concentrations 2.2 to 4.5 % ml" 1 and Zn at 0.8 to 1.5 //g ml-1 are about ± %; for As at 3.2 the errors are ±4% and at 6.3 % about 2 % ; and for Cr at 4 to 9 % ml" 1 they are ± 2 % for pine and ± 5 % f°r eucalypt. Destruction of eucalypt extractives with H 2 O 2 reduces errors in the Cr determination to ±2%. Concentrations of up to HC1 or 0.5 NaCl have little or no effect on the results for Cu, As and Zn, but the presence of NaCl at 1500 ^g ml-1 interferes with Cr and the extent of the interference depends on flame conditions. Bestimmung von Cu-Cr-As und Zn in getränktem Holz durch Atomabsorptionsspektroskopie Zusammenfassung Die Bestimmung von Kupfer, Chrom, Arsen (KCA) und Zink mit Hilfe der Atomabsorptionsspektroskopie in behandeltem Kiefern-und Eukalyptusholz wird beschrieben. Oxydative Behandlung von Hobelspänen der untersuchten Holzarten Kiefer und Eukalyptus mit 3,3 M HC1 in Gegenwart von H 2 O 2 setzt die gebundenen Komponenten innerhalb von 2 min bei ioo°C frei; sie verteilen sich in dem verdünnten Extrakt innerhalb von 10 -20 min. Nach Filtration werden Cu, Cr, As und Zn bestimmt. Die aufgenommene Menge an KCA-Zn im untersuchten Holz betrug 1,9 bis 19 kg m-3 . Der durchschnittliche Fehler für Einzelbestimmungen von Cu in Konzentrationen von 2,2 bis 4,5 ml-1 und Zn von 0,8 bis 1,5 % ml-1 beträgt etwa ± i %', für Arsen in der Konzentration von 3,2 yug liegt der Fehler bei ±4% und für 6,3 /^g bei ± 2%. Für Chrom zwischen 4 bis 9 % ml-1 beträgt er bei Kiefernholz ±2%, bei Eukalyptus 5%. Behandlung der Extrakte aus Eukalyptus mit H 2 O 2 verringert den Fehler der Chrombestimmung auf i 2%. Konzentrationen von bis zu i M HC1 oder 0,5 M NaCl haben geringen oder keinen Einfluß auf die Ergebnisse für Cu, As und Zn. Bei Gegenwart von NaCl in der Konzentration von 1500 % ml" 1 gibt es Nebenreaktionen mit Cr, deren Ausmaß von den Flammenbedingungen abhängt. Brought to you by | SummaryFor most homogeneous dielectrics, the dielectric properties are constants, influenced only by temperature and the frequency of the applied field. The dielectric properties of wood, however, are influenced by a number of factors so that the values found in literature are not of much value unless all the variables are specified. Measurements done on P. pinaster to determine its dielectric properties as a function of several variables are presented here in the form of equations. It is suggested that the regressions could be used to calculate the dielectric properties of other species and to compare these with the measured pro...

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Determination of Cu-Cr-As and Zn in Preserved Wood by Atomic Absorption Spectroscopy

Johanson¹

1973

Holzforschung

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“…Several workers (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23) have studied selected extraction systems for copper, cadmium, antimony, arsenic, and selenium. Enhancement was observed in most cases, and in some instances preconcentration was used.…”

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confidence: 99%

Enhancement of atomic absorption sensitivity for copper, cadmium, antimony, arsenic, and selenium by means of solvent extraction

Chambers¹,

McClellan²

1976

Anal. Chem.

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“…Light attenuation by the flame gases has been noted by several investigators (2)(3)(4)(5)(6)(7)(8)(9). But, the origin(s) of this phenomenon which have been suggested were generally speculatory.…”

mentioning

confidence: 99%

Molecular absorption and light scattering in flames employed for atomic absorption spectroscopy

Fiorino

1970

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Determination of arsenic by atomic absorption spectrometry with an electrodeless discharge lamp as a source of radiation

Cited by 29 publications

References 16 publications

Determination of Cu-Cr-As and Zn in Preserved Wood by Atomic Absorption Spectroscopy

Determination of Cu-Cr-As and Zn in Preserved Wood by Atomic Absorption Spectroscopy

Enhancement of atomic absorption sensitivity for copper, cadmium, antimony, arsenic, and selenium by means of solvent extraction

Molecular absorption and light scattering in flames employed for atomic absorption spectroscopy

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