Investigation of interferences in the determination of thallium in marine sediment reference materials using high-resolution continuum-source atomic absorption spectrometry and electrothermal atomization

2002 ◽  
Vol 57 (6) ◽  
pp. 1043-1055 ◽  
Author(s):  
Bernhard Welz ◽  
Maria Goreti R Vale ◽  
Márcia M Silva ◽  
Helmut Becker-Ross ◽  
Mao-dong Huang ◽  
...  
Keyword(s):  
High Resolution ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Reference Materials ◽  
Marine Sediment ◽  
Absorption Spectrometry ◽  
Electrothermal Atomization ◽  
Continuum Source

scholarly journals MULTI-ELEMENT DETERMINATION OF CALCIUM, POTASSIUM AND MAGNESIUM IN MEDICINAL PLANT BY HIGH-RESOLUTION CONTINUUM SOURCE ATOMIC ABSORPTION SPECTROMETRY

2017 ◽  
Vol 37 (1) ◽  
pp. 45
Author(s):  
Tiago Varão Silva ◽  
Jardes Figuerêdo Rêgo ◽  
Mercedes De Moraes ◽  
Alberto José Cavalheiro ◽  
José Anchieta Gomes Neto ◽  
...  
Keyword(s):  
High Resolution ◽  
Medicinal Plants ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Element Determination ◽  
Continuum Source ◽  
Flame Atomic Absorption ◽  
Secondary Line

A simple and rugged method to determine Ca, K and Mg in a single aliquot of medicinal plants by high-resolution continuum source flame atomic absorption spectrometry is proposed. Secondary lines for Ca (239.856 nm) and K (404.414 nm), and the alternate line measured at wing of the secondary line for Mg at 202.588 nm allowed calibration within the 20 – 500 mg L-1 Ca and K, and 1.0 – 80 mg L-1 Mg. Twenty samples and three plant certified materials were analyzed. Results were in agreement at a 95% confidence level with reference values. Limits of detection were 2.4 mg L-1 Ca, 1.9 mg L-1 K and 0.3 mg L-1 Mg. The RSD (n=12) were ≤ 5.1% and recoveries were between 83 and 108% for all analytes.

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