- 作者: 鄭華生 ; 白書禎 ; 楊末雄 等
- 作者服務機構: 清華大學化學系
- 中文摘要: The results of a series of inter-laboratory cross- check on the determinations of ppb and sub-ppb levels of copper and lead in environmental samples are described. Thirteen laboratories participated during a five-stage comparison. Seven analytical methods and two pre- concentration procedures were performed on certified and real samples. For controlled and blind standards at higher concentration levels (10ppb or above) the data reported by different participants show good agreement for both elements regardless of the method chosen. However, for samples having lower concentrations (1-10ppb level), the relative standard deviation (R.S.D.) and bias increased. A high degree of scattering on data were demonstrated for a deep ocean water at less than 1ppb level. The results of the present study give direct comparison between different analytical methods, and also reflect the average aptitude of analytical laboratories in Taiwan on the measurements of copper and lead in environmental samples.
- 英文摘要: --
- 中文關鍵字: Copper; Lead; Seawater; Inter-Laboratory Cross-Check Analysis; Accuracy; Environmental Analysis; Precision
- 英文關鍵字: 銅;鉛;海水;實驗室間交叉檢查分析;準確度;環境分析;精確度