- 作者: 何武雄 ; 蕭素美 ; 陳金漢
- 作者服務機構: 中興大學化學系
- 中文摘要: Mixed solvent was used to extract ion pairs formed from suitable cationic dye and sodium dodecyl sulfate in sea water. The extracts were used for spectrophotometric determinations. The extraction of ion pairs of various combinations is discussed. Ethyl violet and a mixture (1:1) of p-xylene and toluene are the most useful combination as the cationic dye and the extraction solvent. The extracts were determined spectrophotometrically at 611.2nm; the molar absorptivity is 1.27*10/sup 5/M-cm. The detection limit is 2.0ppb in water based on three times the standard deviation of the blank. Extraction with this mixed solvent is as rapid and sensitive as with the best single solvent.
- 英文摘要: --
- 中文關鍵字: Mixed Solvent; Ion Pair; Sea Water; Sodium Dodecyl Sulfate(Sds); Extraction; Spectrophotometry
- 英文關鍵字: 混合溶劑;離子對;海水;十二烷基磺酸鈉;萃取;分光光度計