Determination of Selenium inGeochemical Samples by Flow Injection Hydride Generation Inductively Coupled Plasma Atomic Emission Spectrometry Following On-line Removal of Iron Interference by Anion Exchange

1997 ◽  
Vol 12 (4) ◽  
pp. 487-490 ◽  
Author(s):  
L. D. MARTINEZ ◽  
E. SAIDMAN ◽  
E. MARCHEVSKY ◽  
R. OLSINA
Keyword(s):  
Inductively Coupled Plasma ◽  
Hydride Generation ◽  
Atomic Emission ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled ◽  
On Line

scholarly journals On-Line Complexation/Preconcentration System for the Determination of Lead in Wine by Inductively Coupled Plasma–Atomic Emission Spectrometry with Ultrasonic Nebulization

2001 ◽  
Vol 84 (5) ◽  
pp. 1555-1560 ◽  
Author(s):  
Rodolfo G Wuilloud ◽  
Alfredo H González ◽  
Eduardo J Marchevsky ◽  
Roberto A Olsina ◽  
Luis D Martinez
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission ◽  
Plasma Atomic Emission Spectrometry ◽  
Ultrasonic Nebulization ◽  
Inductively Coupled ◽  
On Line

Abstract An on-line lead preconcentration and determination system implemented with inductively coupled plasma–atomic emission spectrometry (ICP–AES) with ultrasonic nebulization (USN) in association with flow injection was studied. For the preconcentration of lead, a Pb–quinolin–8–ol complex was formed on-line at pH 6.8 and retained on Amberlite XAD–16 resin. The lead was removed from the microcolumn by countercurrent elution with nitric acid. A total enhancement factor of 225 was obtained with respect to ICP–AES with pneumatic nebulization (15.0 for USN and 15.0 for the column). The detection limit for Pb for the preconcentration of a 10 mL wine sample was 0.15 μg/L. The precision for 10 replicate determinations at a Pb level of 25 μg/L was a relative standard deviation of 2.5%, calculated from the peak heights obtained. The calibration graph obtained by using the preconcentration system for lead was linear with a correlation coefficient of 0.9995 for levels near the detection limit up to ≥ 1000 μg/L. The method was successfully applied to the determination of lead in wine samples.

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