Transversely heated graphite atomizer-atomic absorption spectrometry (thga aas) in combination with flow injection analysis system-hydride generation (fias hg) as a reliable screening method for organolead compounds

1994 ◽  
Vol 8 (7-8) ◽  
pp. 615-620 ◽  
Author(s):  
J. Bettmer ◽  
K. Cammann
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Screening Method ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Flow Injection Analysis System ◽  
Analysis System ◽  
Organolead Compounds

Determination of Total Arsenic and Selenium in Soils and Plants by Atomic Absorption Spectrometry with Hydride Generation and Flow Injection Analysis Coupled Techniques

1996 ◽  
Vol 79 (3) ◽  
pp. 764-768 ◽  
Author(s):  
Oroncio Jiménez De Blas ◽  
N Rodriguez Mateos ◽  
A Garcia Sanchez
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Sample Treatment ◽  
Total Arsenic ◽  
Relative Standard

Abstract A procedure has been developed for determination of total arsenic and selenium in soils and plants by atomic absorption spectrometry with hydride generation associated with flow injection analysis (FIA-AAS-HG). Samples were wet-digested by using 2 systems: heating in a metal digestion block with controlled temperature and time and heating in a microwave oven. Total arsenic and selenium were reduced with NaBH4 and concentrated HCI, respectively. In both digestion systems used for the 2 matrix types, detection limits below 1 μg/L were found for both elements for an injection volume of 160 μL, with relative standard deviations of 3–6%. Recoveries by the method ranged from 93 to 105%; with the reference materials FD8 and MRG-1, the values obtained in all cases were consistent with the certified data. The FIA-AAS-HG procedure is highly suitable for determination of total arsenic and selenium in soils and plants, and because of the coupled system used, it is an improvement over other procedures in terms of sample treatment, sample consumption, and automation.

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