- 作者: S. C. Dhupar; K. C. Srivastava; Samir K. Banerji
- 作者服務機構: Department of Chemistry, B. I. T. S., Pilani (Rajasthan) India
- 中文摘要:
Nickel (II) and Cobalt (II) form in 50% ethanolic medium, a bluish violet complex with Bromopyrogallol Red (BPR) in the mole ratio of 1:1 (Ni(II)) and 1:2(Co(II)), both having λmax at 620nm, stable in the pH ranges 6.0-7.5 and 5.5-7.0, respectively. the thermodynamic stability constants and overall changes in the free energy of formation, enthalpy and entropy have been determined in both the cases.
Beer’s law is obeyed over the concentration range 0.5-5.0 ppm of Nickel and 0.2-3.0 ppm of Cobalt at 6.20 nm. The net molar absorptivities are 1.6×10.. and 2.9×10.. and the sensitivities are 0.00367 and 0.00219μg of Nickel and Cobalt per cm2. the effect of diverse ions on the metal ions determination is also reported. - 英文摘要: --
- 中文關鍵字: --
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