Solid sampling determination of total fluorine in baby food samples by high-resolution continuum source graphite furnace molecular absorption spectrometry.
This study describes the applicability of solid sampling technique for the determination of fluorine in various baby foods via molecular absorption of calcium monofluoride generated in a graphite furnace of high-resolution continuum source atomic absorption spectrometry. Fluorine was determined at CaF wavelength, 606.440nm in a graphite tube applying a pyrolysis temperature of 1000°C and a molecule forming temperature of 2200°C. The limit of detection and characteristic mass of the method were 0.20ng and 0.17ng of fluorine, respectively. The fluorine concentrations determined in standard reference sample (bush branches and leaves) were in good agreement with the certified values. By applying the optimized parameters, the concentration of fluorine in various baby foods were determined. The fluorine concentrations were ranged from <LOQ to 3.75μgg(-1). Owing to the ultra low sample amounts used in solid sampling analysis, micro-scale distribution of fluorine in the samples was also determined.
Istanbul Technical University, Faculty of Arts and Sciences, Department of Chemistry, 34469 Maslak-Istanbul, Turkey. Electronic address: nil.ozbek@itu.edu.tr.
Nil
N
Ozbek
Istanbul Technical University, Faculty of Arts and Sciences, Department of Chemistry, 34469 Maslak-Istanbul, Turkey. Electronic address: akmans@itu.edu.tr.
Suleyman
S
Akman
D002118:Calcium / Q000737:chemistry; D002124:Calcium Fluoride / Q000032:analysis*; D005459:Fluorides / Q000032:analysis; D005461:Fluorine / Q000032:analysis*; D006108:Graphite / Q000737:chemistry; D006801:Humans; D007225:Infant Food / Q000032:analysis*; D007231:Infant, Newborn; D057230:Limit of Detection; D008872:Microwaves; D018515:Plant Leaves; D013054:Spectrophotometry, Atomic; D013696:Temperature
D005461:Fluorine; D006108:Graphite; D002124:Calcium Fluoride; D005459:Fluorides; D002118:Calcium
Baby food; Fluorine; High-resolution continuum source graphite furnace molecular absorption spectrometry; Molecular absorption; Solid sampling