Flow injection on-line separation and preconcentration for electrothermal atomic absorption spectrometry. Part 1. Determination of ultratrace amounts of cadmium, copper, lead and nickel in water samples

1991 ◽  
Vol 6 (4) ◽  
pp. 295 ◽  
Author(s):  
Michael Sperling ◽  
Xuefeng Yin ◽  
Bernhard Welz
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Flow Injection ◽  
Water Samples ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Separation And Preconcentration ◽  
On Line ◽  
Line Separation ◽  
Copper Lead

scholarly journals A fully automated flow injection atomic absorption system for the determination of copper traces in waters with on-line pre-concentration in an ion-exchange column

1995 ◽  
Vol 17 (1) ◽  
pp. 25-29 ◽  
Author(s):  
J. L. Burguera ◽  
M. Burguera ◽  
P. Carrero ◽  
J. Marcano ◽  
C. Rivas ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flow Injection ◽  
Water Samples ◽  
Absorption Spectrometry ◽  
Linear Calibration ◽  
Relative Standard ◽  
On Line ◽  
Determination Of Copper

The paper describes the development of an automatic on-line column pre-concentration technique using a time based-flow injection atomic absorption spectrometry system. A manifold incorporating a micro-column containing 25 mg of Dowex 50W-X8 was used with a time-based injector for the pre-concentration and determination of copper in natural and drinking waters. The system features depend on the alternate positions of a solenoid valve. The 3σ detection limits, enrichment factors, sampling frequency, relative standard deviations and linear calibration graphs were, respectively, in the range 0.6-1.5 μg/l, 25-60, 15-30 measurements/h, 1.0-3.1% and 1-65 μg/ml for pre-concentration times of 1 min. The procedure was successfully applied to a range of water samples and the accuracy was assessed through recovery experiments, the analysis of certified reference water samples and by independent analysis by atomic absorption spectrometry with electrothermal atomization.

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