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Determination of trace amounts of beryllium using derivative spectrophotometry in non-ionic micellar medium |
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| Authors: | Singh H B Agnihotri N K Singh V K |
| Institution: | a Department of Chemistry, University of Delhi, Delhi 110007, India b Department of Chemistry, Motilal Nehru College, Benito Juarez Road, New Delhi-110021, India c Department of Chemistry, Sri Aurobindo College, Malviya Nagar, New Delhi-110017, India |
| Abstract: | A rapid and sensitive method for the trace level determination of beryllium based on the formation of a 1:2 complex (λmax 560 nm) with 1,4-dihydroxy-9,10-anthracenedione in an aqueous medium containing Triton X-100 is reported. Beer’s law is followed in the range 3.60–360 ng ml?1 of Be(II). The molar absorptivity and Sandell’s sensitivity are 1.68×104 l mol?1cm?1 and 0.54 ng cm?2, respectively; detection limit is 0.23 ng ml?1 of Be(II). Analysis of synthetic mixtures of composition similar to that of alloys and spiked samples of distilled water, gave results that are in agreement with their beryllium content. |
| Keywords: | Beryllium(II) determination Non-ionic surfactant Derivative spectrophotometry 1 4-Dihydroxy-9 10-anthracenedione Peak height Trough depth |
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