Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples
An extractive spectrophotometric method has been developed for microdetermination of molybdenum. At room temperature Mo(VI) was reduced to Mo(V) in 2 M H2SO4 using ascorbic acid as a reductant. The Mo(V) formed a yellow-coloured (1 : 2) complex with 6-chloro-3-hydroxy-2-(3′-hydroxyphenyl)-4-oxo-4H-1...
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| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/420768 |
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| author | Rameshwar Dass Jitander K. Kapoor Sunita Gambhir |
| author_facet | Rameshwar Dass Jitander K. Kapoor Sunita Gambhir |
| author_sort | Rameshwar Dass |
| collection | DOAJ |
| description | An extractive spectrophotometric method has been developed for microdetermination of molybdenum. At room temperature Mo(VI) was reduced to Mo(V) in 2 M H2SO4 using ascorbic acid as a reductant. The Mo(V) formed a yellow-coloured (1 : 2) complex with 6-chloro-3-hydroxy-2-(3′-hydroxyphenyl)-4-oxo-4H-1-benzopyran (CHHB). The complex was quantitatively extracted into toluene and absorbed maximum at λmax 404 nm. Beer’s law was obeyed over the concentration range of 2.31 μg Mo ml−1 with a molar absorptivity and Sandell's sensitivity of 5.62×104 L mol−1 cm−1 and 0.0016 μg Mo cm−2, respectively. The relative standard deviation was 0.0025 (in absorbance units) for 10 replicate determinations of 1 μg Mo ml−1. The method was free from the interference of large number of analytically important elements. Molybdenum has been determined satisfactorily in different technical, synthetic, and environmental samples with improved accuracy and precision. |
| format | Article |
| id | doaj-art-b1bfa1b8f6164437b76a1abf27bdf28c |
| institution | OA Journals |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
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| series | Journal of Chemistry |
| spelling | doaj-art-b1bfa1b8f6164437b76a1abf27bdf28c2025-08-20T02:23:35ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/420768420768Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental SamplesRameshwar Dass0Jitander K. Kapoor1Sunita Gambhir2Department of Industrial Chemistry, Guru Nanak Khalsa College, Yamuna Nagar, Haryana 135001, IndiaDepartment of Chemistry, National Institute of Technology, Kurukshetra, Haryana 136119, IndiaDepartment of Chemistry, Arya Kanya Mahavidyalya, Shahabad (M), Haryana 136135, IndiaAn extractive spectrophotometric method has been developed for microdetermination of molybdenum. At room temperature Mo(VI) was reduced to Mo(V) in 2 M H2SO4 using ascorbic acid as a reductant. The Mo(V) formed a yellow-coloured (1 : 2) complex with 6-chloro-3-hydroxy-2-(3′-hydroxyphenyl)-4-oxo-4H-1-benzopyran (CHHB). The complex was quantitatively extracted into toluene and absorbed maximum at λmax 404 nm. Beer’s law was obeyed over the concentration range of 2.31 μg Mo ml−1 with a molar absorptivity and Sandell's sensitivity of 5.62×104 L mol−1 cm−1 and 0.0016 μg Mo cm−2, respectively. The relative standard deviation was 0.0025 (in absorbance units) for 10 replicate determinations of 1 μg Mo ml−1. The method was free from the interference of large number of analytically important elements. Molybdenum has been determined satisfactorily in different technical, synthetic, and environmental samples with improved accuracy and precision.http://dx.doi.org/10.1155/2013/420768 |
| spellingShingle | Rameshwar Dass Jitander K. Kapoor Sunita Gambhir Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples Journal of Chemistry |
| title | Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples |
| title_full | Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples |
| title_fullStr | Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples |
| title_full_unstemmed | Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples |
| title_short | Extractive Spectrophotometric Method for Determination of Molybdenum in Steels and Environmental Samples |
| title_sort | extractive spectrophotometric method for determination of molybdenum in steels and environmental samples |
| url | http://dx.doi.org/10.1155/2013/420768 |
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