Application of atomic absorption spectrometry with continuous light source to analyze selected metals important for human health in different parts of oranges
The publication describes the application of high-resolution continuum source atomic absorption spectrometry (H-R CS AAS) to determine some physiologically essential and toxic elements occurring in citrus fruits of different origins. Before analysis, the samples were mineralized using a mixture of deionized water and 69% nitric acid 3:1 (v/v) in high pressure microwave digestion at 188°C during one hour. The obtained validation parameters for AAS such as high linearity (the correlation coefficient R > 0.997) and high precision expressed as relative standard deviation (%RSD) were satisfactory for quantification. Cadmium at concentration range from 0.29 to 0.43 mg/kg was determined in all tested samples, however the obtained values did not exceed Polish standards. The higher concentration of potassium comparing to sodium and calcium was noted in each investigated samples. The highest variation was observed for calcium, its concentration strongly depended on the country of origin.
- 1. Afkhami A., Madrakian T., Siampour H.: Flame atomic absorption spectrometric determinate of trace quantities of cadmium in water samples after could point extraction in Triton X - 114 without added chelating agents., J. Hazard. Mater., B138, 2006.
- 2. Chen J., Teo K.C.: Determination of cadmium, copper, lead and zinc in water samples by flame atomic absorption spectrometry after cloud point extraction., Anal. Chim. Acta, 450, 2001.
- 3. De La Fuente M.A., Juárez M., Rapid determination of calcium, magnesium, sodium and potassium in milk by flame atomic spectrometry after microwave oven digestion., Analyst 120, 1, 1995.
- 4. Doroschuk V.O., et al.: Flame atomic absorption determination of manganese(II) in natural water after cloud point extraction., Talanta 64, 2004.
- 5. Heldur H., et al.: Anodic stripping voltammetric determination of cadmium in whole human blood., Electroanal.,16, 5, 2004.
- 6. Kozina S. A., Kushchevskaya N.F.: Inversion voltammetric determination of microconcentrations of Cd (II) and Zn (II) when they are jointly present in waters., J. Water Chem. and Tech., 30, 2008.
- 7. Krawczyk M., Jeszka - Skowron M., Matusiewicz H.: Sequential multi-element determination of iron and zinc in water samples by high-resolution continuum source graphite furnace atomic absorption spectrometry after column solid-phase extraction onto multiwalled carbon nanotubes., Microchem. J., 17, 2014.[WoS]
- 8. Shah K.V., Kapupara P.K., Desai T.R.: Determination of sodium, potassium, calcium and lithium in Wheat Grass by flame photometry. J. Pharm. Sci., 2, 3, 2011.
- 9. Shemirani F., Abkenar S.D., Jamali M.R.: Determination of cadmium(II), copper(II) and zinc(II) in water samples by flame atomic absorption spectrometry after cloud point extraction., Indian J. Chem., Sect. A 44, 2005.
- 10. Sowa I., et al.: Biofortification of Soy (Glycine max (L.) Merr.) with Strontium Ions., J. Agric. Food. Chem., 62, 23, 2014[Crossref][WoS]