Nagaraja, P. and Krishna, H. and Shivakumar, A. and Paulas, A. and Rangappa, D. (2011) Quantification of ultra-trace molybdenum using 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid monosodium salt as a chromogenic probe. ANALYTICAL BIOCHEMISTRY, 411 (2). pp. 300-302.
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A simple, ultrasensitive, nonextractive spectrophotometric method has been developed for the assay of Mo(VI), which involves Mo-catalyzed oxidation of 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid monosodium salt (AHNDSA) by H2O2 in acetic acid/sodium acetate buffer yielding an intense pink colored product with lambda(max) of 540 nm. Beer's law is obeyed in the range of 10-240 ng/ml with molar absorptivity of 3.0137 x 10(5) L mol(-1) cm(-1). The LOD and LOQ were found to be 0.7696 and 2.565 ng/ml, respectively. The applicability of the method toward water and biological samples was tested and statistically compared with a reference method. (C) 2010 Elsevier Inc. All rights reserved.
| Item Type: | Article |
|---|---|
| Subjects: | C Chemical Science > Chemistry |
| Divisions: | Department of > Chemistry |
| Depositing User: | Users 23 not found. |
| Date Deposited: | 01 Jul 2019 05:42 |
| Last Modified: | 01 Jul 2019 05:42 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/2516 |
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