Selective spectral-line modulation technique for high sensitivity continuum-source atomic absorption spectrometry

1977 ◽  
Vol 49 (1) ◽  
pp. 98-105 ◽  
Author(s):  
Ronald L. Cochran ◽  
Gary M. Hieftje
Keyword(s):  
Spectral Line ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Continuum Source ◽  
Modulation Technique

The atomic absorption spectrometry of molybdenum in the presence of sulphonated aromatic compounds

1981 ◽  
Vol 46 (3) ◽  
pp. 708-716 ◽  
Author(s):  
Josef Komárek ◽  
Vít Mahr ◽  
Lumír Sommer
Keyword(s):  
Nitrous Oxide ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Aromatic Compounds ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Probable Mechanism ◽  
Sodium Salts ◽  
Sulphosalicylic Acid

The effect of sulphonated aromatic compounds on the atomization of molybdenum in acetylene-air and nitrous oxide-acetylene flames was studied. The absorbance signal is increased in the presence of these compounds only in acetylene-nitrous oxide flames and in the presence of potassium or sodium salts. Otherwise, the absorbance is decreased. The probable mechanism of the effect of sulphonated aromatic groups during the atomization of molybdenum is discussed. The determination in the presence of 0.1M 5-sulphosalicylic acid and 9.5 mg ml-1 KCl is without interference and has high sensitivity.

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