Sensitivity enhancement in flame atomic absorption spectrometry for determination of copper in human thyroid tissues.
Various designs of quartz tube in a slotted tube atom trap were examined for improving the sensitivity of flame AAS. A 3.5-fold enhancement in the sensitivity was obtained by using the optimized method. The method was applied to the determination of Cu in cancerous and non-cancerous human thyroid tissues. The Cu concentrations of the cancerous samples tended to increase compared with the non-cancerous samples. Zn concentrations of the same tissues were also determined.
Yaman
Mehmet
M
Department of Chemistry, Sciences and Arts Faculty, Firat University, Elazig, Turkey. myaman@firat.edu.tr
Akdeniz
Ismail
I
D002138:Calibration; D003300:Copper / Q000032:analysis*; D006801:Humans; D012015:Reference Standards; D012680:Sensitivity and Specificity; D013054:Spectrophotometry, Atomic / Q000379:methods*; D013961:Thyroid Gland / Q000737:chemistry*; D013964:Thyroid Neoplasms / Q000737:chemistry*; D015032:Zinc / Q000032:analysis
D003300:Copper; D015032:Zinc