Determination of lead at low concentrations in food samples by electrothermal atomic absorption spectrometry

1994 ◽  
Vol 9 (12) ◽  
pp. 1427 ◽  
Author(s):  
R. Tahvonen ◽  
J. Kumpulainen
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Food Samples ◽  
Low Concentrations

scholarly journals Determination of Cadmium, Aluminium, and Copper in Beer and Products Used in Its Manufacture by Electrothermal Atomic Absorption Spectrometry

2002 ◽  
Vol 85 (3) ◽  
pp. 736-743 ◽  
Author(s):  
Pilar Viñas ◽  
Nerea Aguinaga ◽  
Ignacio López-García ◽  
Manuel Hernández-Córdoba
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Certified Reference Materials ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Sample Digestion ◽  
Low Concentrations

Abstract Procedures were developed for determining cadmium, aluminium, and copper in beer and the products used in its manufacture by electrothermal atomic absorption spectrometry. Beer samples were injected into the furnace and solid samples were introduced as suspensions after preparation in a medium containing hydrogen peroxide, nitric acid, and ammonium dihydrogen phosphate for cadmium atomization. Calibration was performed with aqueous standards, and characteristic masses and detection limits were, respectively, 1 and 0.3 pg for cadmium, 18 and 5.4 pg for aluminium, and 5.6 and 6.8 pg for copper. Different samples of beer, wort, brewer's yeast, malt, raw grain, and hops were analyzed by the proposed procedures. Cadmium was found in low concentrations (0.001–0.08 μg/g and 0–1.3 μg/mL); copper (3–13 μg/g and 25–137 μg/mL) and aluminium (0.6–9 μg/g and 0.1–2 μg/mL) were found at higher levels. The reliability of the procedure was confirmed by comparing the results obtained with others based on microwave oven sample digestion, and by analyzing several certified reference materials.

Determination of Lanthanum, Europium, and Ytterbium in Food Samples by Electrothermal Atomic Absorption Spectrometry

1992 ◽  
Vol 75 (4) ◽  
pp. 667-671 ◽  
Author(s):  
Shen Miaokang ◽  
Shi Yinyu
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Inductively Coupled Plasma ◽  
Graphite Furnace ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Food Samples ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry

Abstract A method had been developed for the determination of lanthanum, europium, and ytterbium in food samples by using electrothermal atomic absorption spectrometry with a graphite furnace lined with tungsten foil. The proposed method provides higher sensitivity than inductively coupled plasma/atomic emission spectrometry (ICP/AES); the characteristic masses are 8.1 x 10-9 g for lanthanum, 3.9 x 10-11 g for europium, and 4.27 x 10,-12 g for ytterbium. The precision, accuracy, and interferences of the method were also investigated. The method can be used for the analysis of trace amounts of lanthanum, europium, and ytterbium in various foods without predissociation of the matrixes of the digested solutions. The results obtained by the method are in good agreement with those from ICP/AES.

A novel supramolecular aggregated liquid–solid microextraction method for the preconcentration and determination of trace amounts of lead in saline solutions and food samples using electrothermal atomic absorption spectrometry

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 49076-49082 ◽  
Author(s):  
H. Kahe ◽  
M. Chamsaz ◽  
M. H. Arbab Zavar
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Food Samples ◽  
Saline Solutions

A novel supramolecular aggregated liquid–solid microextraction method was developed for the preconcentration and determination of trace amounts of lead in saline solutions and food samples.

Sign in / Sign up

Export Citation Format

Share Document