- 作者: 高志明 ; 程蘊菁 ; 翁銘宏 等
- 作者服務機構: 東海大學環境科學系
- 中文摘要: After human urine or serum was diluted (1+9) with HNO/sub 3/ (0.2%, v/v) and standard additions of Se solution(100.mu.g/L), the diluted sample (10.mu.L) was introduced into the graphite cuvette. The matrix modifier (10.mu.L, containing Pd (0.6.mu.g)+ Ni (25.mu.g)+NH/sub 4/NO/sub 3/(80.mu.g) in HNO/sub 3/ (0.2%, v/v) for urine, or Pd(0.3.mu.g)+Ni (30.mu.g)+NH/sub 4/NO/sub 3/ (80.mu.g)+Triton X-100 (0.04%) in HNO/sub 3/ (0.2%, v/v) for serum, respectively) was added and the mixture was heated according to a temperature program. The matrix modifier containing NH/sub 4/NO/sub 3/ in a suitable amount and a small amount of Pd enhanced the sensitivity for Se. The method detection limits (3.sigma.) after dilution were about 4.9.plmin.0.8 and 2. 36.plmin.0.18.mu.g/L for urine and serum, respectively. The accuracy of this method was tested with SRM #2670 human urine Se and Seronorm Trace Elements #116 human serum Se, respectively, and the results of 97.6 to 101% and 100 to 104% were obtained with precision.plmin.0.3% and .plmin.2%, respectively. This method can be applied easily and accurately to the determination of concentration of total Se in human urine and serum.
- 英文摘要: --
- 中文關鍵字: Selenium; Urine; Serum; Graphite Furnace Atomic Absorption Spectrometry; Palladium; Nickel; Ammonium Nitrate; Matrix
- 英文關鍵字: 硒;尿;血清;石墨爐原子吸收光譜;鈀;鎳;硝酸銨;基質(基體)