DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)

A rapid, simple, sensitive and selective spectrophotometric method is developed for the determination of molybdenum (VI) in aqueous dimethyl formamide (DMF). Molybdenum (VI) forms a yellow coloured complex with 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone in the pH range 1.0-6.0. The complex s...

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Autores principales:	PRAVEENKUMAR,A, RAVEENDRA REDDY,P, KRISHNA REDDY,V
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2007
Materias:	Determination of Mo (VI) Spectrophotometry food stuffe and in allog seteels HMBATSC
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400009
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spelling	oai:scielo:S0717-970720070004000092008-04-30DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)PRAVEENKUMAR,ARAVEENDRA REDDY,PKRISHNA REDDY,V Determination of Mo (VI) Spectrophotometry food stuffe and in allog seteels HMBATSC A rapid, simple, sensitive and selective spectrophotometric method is developed for the determination of molybdenum (VI) in aqueous dimethyl formamide (DMF). Molybdenum (VI) forms a yellow coloured complex with 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone in the pH range 1.0-6.0. The complex shows maximum absorbance at 375nm and in the pH range 1.0-2.0. However, at this wave length, the reagent shows considerable absorbance. At 385nm, the complex shows large absorbance while the reagent blank shows negligible absorbance. Hence, analytical studies are carried out at 385nm and at pH 1.5 against reagent blank. Beer's law is obeyed in the range 0.24-4.32 µg ml-1. The molar absorptivity and Sandell's sensitivity forthe coloured solution are found to be 2.3 x 10-4 1 mol-1 cm-1 and 0.0042 µg cm-2 respectively. The interference effect of various diverse ions has been studied. The complex shows 1:1 [Mo (VI): HMBATSC] stoichiometry with a stability constant 2.35 x 10(6). The standard deviation of the method in the determination of 2.396 µg ml-1 of Mo(VI) is calculated as ± 0.0012. A second order derivative spectroscopic method is developed for the determination of molybdenum(VI), which is more sensitive than the zero order method.. The developed method has been employed for the determination of molybdenum (VI) in food stuffs and in alloy steels. The results are in excellent agreement with the certified valuesinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.52 n.4 20072007-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400009en10.4067/S0717-97072007000400009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Determination of Mo (VI) Spectrophotometry food stuffe and in allog seteels HMBATSC
spellingShingle	Determination of Mo (VI) Spectrophotometry food stuffe and in allog seteels HMBATSC PRAVEENKUMAR,A RAVEENDRA REDDY,P KRISHNA REDDY,V DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)
description	A rapid, simple, sensitive and selective spectrophotometric method is developed for the determination of molybdenum (VI) in aqueous dimethyl formamide (DMF). Molybdenum (VI) forms a yellow coloured complex with 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone in the pH range 1.0-6.0. The complex shows maximum absorbance at 375nm and in the pH range 1.0-2.0. However, at this wave length, the reagent shows considerable absorbance. At 385nm, the complex shows large absorbance while the reagent blank shows negligible absorbance. Hence, analytical studies are carried out at 385nm and at pH 1.5 against reagent blank. Beer's law is obeyed in the range 0.24-4.32 µg ml-1. The molar absorptivity and Sandell's sensitivity forthe coloured solution are found to be 2.3 x 10-4 1 mol-1 cm-1 and 0.0042 µg cm-2 respectively. The interference effect of various diverse ions has been studied. The complex shows 1:1 [Mo (VI): HMBATSC] stoichiometry with a stability constant 2.35 x 10(6). The standard deviation of the method in the determination of 2.396 µg ml-1 of Mo(VI) is calculated as ± 0.0012. A second order derivative spectroscopic method is developed for the determination of molybdenum(VI), which is more sensitive than the zero order method.. The developed method has been employed for the determination of molybdenum (VI) in food stuffs and in alloy steels. The results are in excellent agreement with the certified values
author	PRAVEENKUMAR,A RAVEENDRA REDDY,P KRISHNA REDDY,V
author_facet	PRAVEENKUMAR,A RAVEENDRA REDDY,P KRISHNA REDDY,V
author_sort	PRAVEENKUMAR,A
title	DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)
title_short	DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)
title_full	DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)
title_fullStr	DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)
title_full_unstemmed	DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)
title_sort	direct and second derivative spectrophotometric determination of molybdenum (vi) in food stuffs and in alloy steels using 2- hydroxy-3-methoxy benzaldehyde thiosemicarbazone (hmbatsc)
publisher	Sociedad Chilena de Química
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400009
work_keys_str_mv	AT praveenkumara directandsecondderivativespectrophotometricdeterminationofmolybdenumviinfoodstuffsandinalloysteelsusing2hydroxy3methoxybenzaldehydethiosemicarbazonehmbatsc AT raveendrareddyp directandsecondderivativespectrophotometricdeterminationofmolybdenumviinfoodstuffsandinalloysteelsusing2hydroxy3methoxybenzaldehydethiosemicarbazonehmbatsc AT krishnareddyv directandsecondderivativespectrophotometricdeterminationofmolybdenumviinfoodstuffsandinalloysteelsusing2hydroxy3methoxybenzaldehydethiosemicarbazonehmbatsc
_version_	1718445378883289088

DIRECT AND SECOND DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM (VI) IN FOOD STUFFS AND IN ALLOY STEELS USING 2- HYDROXY-3-METHOXY BENZALDEHYDE THIOSEMICARBAZONE (HMBATSC)

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