- 作者: Jha, Anju ; Mishra, R.K.
- 作者服務機構: Chemistry Ravishankar Univ., Raipur, India
- 中文摘要: A spectrophotometric method to determine palladium(II) at trace levels is based on the extraction of palladium(II) as a binary complex with N-hydroxy-N,N'-diphenylbenzamidine(HDPBA) in chloroform at pH 5.0.plmin.0.2. The complex shows maximum absorbance at 400nm with molar absorptivity 6.4*10/sup 3/L/mol-cm. The sensitivity of the Pd(II)-HDPBA complex was enhanced by the addition of 1-(2-pyridylazo)-2- naphthol (PAN). The green coloured complex shows maximum absorbance at 620nm with molar absorptivity 1.58*10/sup 4/ L/mol-cm. Sandell's sensitivity and the detection limit of the method are 0.0067.mu.g/cm/sup 2/ and 0.1.mu.g Pd(II)/mL, respectively. Most common metal ions associated with palladium metal do not interfere. The effects of various analytical parameters on the extraction of the metal are discussed.
- 英文摘要: --
- 中文關鍵字: Extraction; Spectrophotometry; Palladium (Ii); N-Hydroxy-N,N'-Diphenylbenzamidine; 1-(2-Pyridylazo)-2-Naphthol; Sensitivity; Detection Limit
- 英文關鍵字: 萃取;光譜光度比色法;鈀;N-羥-N;N'-二苯苯□;1-(2-啶偶氮)-2-酚;靈敏度;偵測極限