Fast determination of lead in lake sediment samples using electrothermal atomic absorption spectrometry with slurry samples introduction

Talanta ◽  
2002 ◽  
Vol 56 (1) ◽  
pp. 105-114 ◽  
Author(s):  
D Baralkiewicz
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Lake Sediment ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Fast Determination ◽  
Sediment Samples

scholarly journals Fast Determination of Lead and Copper in Dairy Products by Graphite Furnace Atomic Absorption Spectrometry

1999 ◽  
Vol 82 (2) ◽  
pp. 368-373 ◽  
Author(s):  
Pilar Viñas ◽  
Mercedes Pardo-Martí ◽  
Natalia Campillo ◽  
Manuel Hernández-Córdoba
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Dairy Products ◽  
Graphite Furnace ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Dihydrogen Phosphate ◽  
Fast Determination ◽  
Graphite Furnace Atomic Absorption

Abstract A rapid and direct procedure for determining lead and copper in dairy products by electrothermal atomic absorption spectrometry (ETAAS) is described. Samples are slurried in a medium containing 50% v/v hydrogen peroxide, 1 % v/v nitric acid, 0.5% w/v dihydrogen phosphate, and 20% v/v ethanol and directly injected into the furnace with no previous mineralization. Calibration is performed with aqueous standards. Limits of determination were 0.4 and 2.4 ng/mL for copper and lead, respectively. The reliability of the procedure was checked by comparison with the acid mineralization procedure and by analyzing 3 certified reference milk samples.

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