Analysis of Cadmium in Urine using Flame and Flameless Atomic Absorption Spectrophotometry
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.5, pp.355-359
Ham, Yong-Gyu
Lee, Seok-Ki
Jeon, Jae-Hong
Joung, Chang-Ung
Son, Bu-Soon
Ham,
Y., Lee,
S., Jeon,
J., Joung,
C., &
Son,
B.
(1999). Analysis of Cadmium in Urine using Flame and Flameless Atomic Absorption Spectrophotometry. , 12(5), 355-359.
Abstract
Trace cadmium was determined in urine by flame and nameless AAS. Inflame method, cadmium was extracted into MIBK from Cd-DDTC complex. In flameless method, samples were pretreated with 1%, Triton X-100. 1% $HNO_3$ and matrix modifier $Pd(NO_3)_2$. Analysis of cadmium was, performed at $450-750^{\circ}C$ ashing temperature by use of pyrocoated tubes. Results of analysis, flameless method superior in sample treatment and reproducibility to flame method and highest absorbance was obtained at $550^{\circ}C$ ashing temperature. 100 mg/L $Pd(NO_3)_2$ concentration. Proposed method were applied to the determination of cadmium in standard urine Lononorm-Metalle 3.
- keywords
-
cadmium,
urine,
flame and flameless AAS