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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,
Y., Lee,
S., Jeon,
J., Joung,
C., &
Son,
B.
(1999). Analysis of Cadmium in Urine using Flame and Flameless Atomic Absorption Spectrophotometry. Analytical Science and Technology, 12(5), 355-359.
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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% <TEX>$HNO_3$</TEX> and matrix modifier <TEX>$Pd(NO_3)_2$</TEX>. Analysis of cadmium was, performed at <TEX>$450-750^{\circ}C$</TEX> 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 <TEX>$550^{\circ}C$</TEX> ashing temperature. 100 mg/L <TEX>$Pd(NO_3)_2$</TEX> concentration. Proposed method were applied to the determination of cadmium in standard urine Lononorm-Metalle 3.
- keywords
- cadmium, urine, flame and flameless AAS
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