Electrothermal atomic absorption spectrometric determination of silver in biological materials with a molybdenum tube atomizer

Ohta, Kouji; Kaneco, Satoshi; Itoh, Syn Ichi; Mizuno, Takayuki

doi:10.1016/0003-2670(92)85014-w

Cited by 22 publications

(3 citation statements)

References 12 publications

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“…These facts are similar to those obtained in the determination of silver, aluminium and copper, etc. with AAS when using a metal tube atomizer [19,22,23]. The maximum peak height and area of the Os signal was obtained at a temperature of 3180~ The results on the temperature range are reasonable in view of the reduction of the complex to osmium metal on the graphite surface during the ashing and atomising.…”

Section: Influence Of the Atomisation Temperaturementioning

confidence: 99%

Determination of osmium in waste water by graphite furnance atomic absorption spectrometry

et al. 1998

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Abstract. The determination of osmium in wastewater by electrothermal atomic absorption spectrometry (AAS) with a graphite furnace atomiser has been investigated. The atomisation characteristics of osmium on the atomiser were found to result in optimal ashing and atomisation temperatures of 300-500 and 3180 ~ respectively.The characteristic mass (the mass of element giving 0.0044 abs.) of osmium after optimization was found to be 1.6 ng, which is better than obtained with flame AAS and ultraviolet/visible (UV) absorption spectrophotometry. The detection limit (s/n = 3) was 3.6 ng (or 0.36 gg ml-1). The relative std. deviation obtained with graphite furnace AAS was 3.0%.The interference caused by large amounts of common cations and anions in waste water were evaluated and thiourea as matrix modifier was shown to be able to eliminate many interferences. The recovery of osmium spiked in waste water was considered almost satisfactory at the 1-50 gg m1-1 range and the results were shown to well agree with the analytical values obtained by UV absorption spectrophotometry.

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Section: Influence Of the Atomisation Temperaturementioning

confidence: 99%

Determination of osmium in waste water by graphite furnance atomic absorption spectrometry

et al. 1998

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“…This was important because peak height rather than area was measured. A molybdenum tube atomizer was also used for the determination of Ag in biological materials (98). An advantage of a platinum tube furnace is the ability to operate it in air without the need for a protective inert purge gas (99).…”

Section: Fundamental Datamentioning

confidence: 99%

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Jackson¹,

Mahmood²

1994

Anal. Chem.

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“…These atomizers have so far shown superior performance and better sensitivity for most metal elements than graphite furnaces, flame furnaces and other analytical methods, primarily due to their ability to use smaller sample size, relatively low power consumption and low cost [16]. Several studies [17][18][19][20] have reported use of the molybdenum tube, tungsten coil and filament atomizers for the determination of lead in biological and environmental samples by ETAAS.…”

Section: Introductionmentioning

confidence: 99%

Determination of trace lead impurities in pure copper slurry samples by electrothermal atomic absorption spectrometry with molybdenum tube atomizer

et al. 2000

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Abstract.A method for direct atomization of slurry sample by electrothermal atomic absorption spectrometry (SS-ETAAS) has been developed for the determination of trace lead impurities in commercially available pure copper using laboratory-made molybdenum tube atomizer. Suitable charring temperature was set and matrix element interference was checked. Lead standard solution in the glycerol-water medium as calibration medium and ultrasonic agitation method of the suspension of the sample powder were used. Typical results of this direct slurry method and wet digestion were close and precision varies over the range RSD 3.9 to 9.0 %. The recovery of Pb added was 98-102 %. Accuracy for certified copper sample agreed within 3 % range. Limits of detection were 34 fg Pb (3S/N), and characteristic mass 170 fg Pb. The method offers rapid calibration, simplified and fast analysis of lead in pure copper at lower cost.

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Electrothermal atomic absorption spectrometric determination of silver in biological materials with a molybdenum tube atomizer

Cited by 22 publications

References 12 publications

Determination of osmium in waste water by graphite furnance atomic absorption spectrometry

Determination of osmium in waste water by graphite furnance atomic absorption spectrometry

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Determination of trace lead impurities in pure copper slurry samples by electrothermal atomic absorption spectrometry with molybdenum tube atomizer

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