2,4-Dihydroxybenzophenone benzoic hydrazone for spectrophotometric determination of copper(II) and iron(III) in soil and cement
| Main Authors: | V. Krishna Reddy, J, Thippaiah, C. Kesava Rao, P. Raveendra Reddy, T. Sreenivasulu Reddy |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1999
|
| Subjects: | |
| Online Access: |
https://zenodo.org/record/5851958 |
Daftar Isi:
- Department of Chemistry, Sri Krishnadevaraya University, Anantapur-515 003, India Manuscript received 23 May 1997, revised 28 December 1998, accepted 4 February 1999 2,4-Dihydroxybenzophenone benzoic hydrazone (DHBPBH) is employed as an analytical reagent for the spectrophotometric determination of copper and iron. The reagent forms 1 : 1 greenish yellow coloured complex with copper(II) at pH 4.0 and λmax 380 nm (E 1.55 x 104 dm3 mot-1 em-1); Sandell's sensitivity 0.004 μg cm-2, and Beer's law range 0.31-2.2 μg ml-1. It results a brown coloured 2: 3 complex with iron(lll) at pH 5.0 and λmax 380 nm (E 2.8 x 104 dm3 mol-1 cm-1); Sandell's sensitivity 0.002 μg em-1 and Beer's law range 0.14-1.0 μg ml-1. The method has been applied for the determination of copper in soil and alloy samples and iron( Ill) in cement sample.