- 作者: 孫毓璋
- 作者服務機構: 清華大學電機工程研究所
- 中文摘要: A method was developed for the determination of antimony in slurried sediments (on the basis of samples of three Certified Reference Materials) by electrothermal atomic absorption spectrometry (ETAAS) with Zeeman-effect background correction. Slurried samples were prepared in 6% nitric acid containing 0.02% of Triton X-100. A mixed palladium/magnesium chemical matrix modifier, L'vov platform atomization and a temperature-time program with a relatively short(10s) sample pyrolysis stage were used. The results of the determinations by this technique are in very close agreement with certified values and the repeatability of this analytical procedure expressed in terms of relative standard deviation was typically better than 9% at the slurry concentration of approx. 90mg/2mL. The characteristic mass of Sb (at the spectral line 231.1nm) was 25.6pg and the limit of detection (calculated for 100mg/2mL slurry) was about 0.04.mu.g/g.
- 英文摘要: --
- 中文關鍵字: Antimony (Sb); Sediments; Ultrasonic Sampling; Electrothermal Atomic Absorption Spectrometry; Slurry
- 英文關鍵字: 銻;沈積物;超音波採樣;電熱原子吸收光譜;汙泥