Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants
The azo organic reagent (1,5-dimethyl-2-phenyl-4-((2,3,4-trihydroxy phenyl) diazenyl)-1H-pyrazol-3(2H)-one) (DPTPD) was prepared and used for the spectrophotometric determination of cobalt(Ⅱ) and Lead(Ⅱ), by the selective and surfactant-sensitized method based on the ternary complexes formation of C...
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| Format: | Article |
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Tsinghua University Press
2020-06-01
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| Series: | Nano Biomedicine and Engineering |
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| Online Access: | https://www.sciopen.com/article/10.5101/nbe.v12i2.p160-166 |
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| author | Shaimaa Mohsen. Essa Wisam Hindawi Hoidy |
| author_facet | Shaimaa Mohsen. Essa Wisam Hindawi Hoidy |
| author_sort | Shaimaa Mohsen. Essa |
| collection | DOAJ |
| description | The azo organic reagent (1,5-dimethyl-2-phenyl-4-((2,3,4-trihydroxy phenyl) diazenyl)-1H-pyrazol-3(2H)-one) (DPTPD) was prepared and used for the spectrophotometric determination of cobalt(Ⅱ) and Lead(Ⅱ), by the selective and surfactant-sensitized method based on the ternary complexes formation of Co(Ⅱ) and Pb(Ⅱ). The reagent had absorption maximum at 381 nm, and reacted with Co2+ to form a purple reddish complex with λmax = 430 nm at pH = 7.5, while it formed a red complex with Pb2+ of λmax = 417 nm at pH= 6. Beer's law for the determination over the range of 1 - 25 ppm and 1 - 33 ppm for Co(Ⅱ) and Pb(Ⅱ), respectively. The molar absorptivity (Є) and Sandell's sensitivity values of Co(Ⅱ) and Pb(Ⅱ) complexes were found to be 1.02 × 104, 3.3 ×104 mol-1 cm-1, and 0.0725, 0.0269 μg cm-2 at 430, 417 nm, respectively. The stability constant was found to be 1.1 × 108 L mol-1 and 2.3 × 108 L mol-1 for Co(Ⅱ) and Pb(Ⅱ), respectively. Detection limit relative standard deviation, relative error and recovery were predestined for 15 ppm standard solution of Co(Ⅱ) and Pb(Ⅱ) complexes, respectively. The important interferences with most ions like Cr+3, Mn2+, Fe3+, Zn2+, Hg2+, Mo+2, Pt2+ and Cd+2 were studied using the appropriate masking agents. The method was applied for the determination of Co(Ⅱ) in filling sample; the result obtained was incompatible with that by the flame atomic absorption spectrometry method. The organic reagent (DPTPD) was diagnosed as an anti-bacterial and an antioxidant. |
| first_indexed | 2024-03-11T21:43:16Z |
| format | Article |
| id | doaj.art-0934273f5c5c4818a015cdc41bef7a80 |
| institution | Directory Open Access Journal |
| issn | 2150-5578 |
| language | English |
| last_indexed | 2024-03-11T21:43:16Z |
| publishDate | 2020-06-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Nano Biomedicine and Engineering |
| spelling | doaj.art-0934273f5c5c4818a015cdc41bef7a802023-09-26T11:04:04ZengTsinghua University PressNano Biomedicine and Engineering2150-55782020-06-0112216016610.5101/nbe.v12i2.p160-166Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and AntioxidantsShaimaa Mohsen. Essa0Wisam Hindawi Hoidy1Department of Chemistry, College of Education, University of Al-Qadisiyah, Al-Qadisiyah, IraqDepartment of Chemistry, College of Education, University of Al-Qadisiyah, Al-Qadisiyah, IraqThe azo organic reagent (1,5-dimethyl-2-phenyl-4-((2,3,4-trihydroxy phenyl) diazenyl)-1H-pyrazol-3(2H)-one) (DPTPD) was prepared and used for the spectrophotometric determination of cobalt(Ⅱ) and Lead(Ⅱ), by the selective and surfactant-sensitized method based on the ternary complexes formation of Co(Ⅱ) and Pb(Ⅱ). The reagent had absorption maximum at 381 nm, and reacted with Co2+ to form a purple reddish complex with λmax = 430 nm at pH = 7.5, while it formed a red complex with Pb2+ of λmax = 417 nm at pH= 6. Beer's law for the determination over the range of 1 - 25 ppm and 1 - 33 ppm for Co(Ⅱ) and Pb(Ⅱ), respectively. The molar absorptivity (Є) and Sandell's sensitivity values of Co(Ⅱ) and Pb(Ⅱ) complexes were found to be 1.02 × 104, 3.3 ×104 mol-1 cm-1, and 0.0725, 0.0269 μg cm-2 at 430, 417 nm, respectively. The stability constant was found to be 1.1 × 108 L mol-1 and 2.3 × 108 L mol-1 for Co(Ⅱ) and Pb(Ⅱ), respectively. Detection limit relative standard deviation, relative error and recovery were predestined for 15 ppm standard solution of Co(Ⅱ) and Pb(Ⅱ) complexes, respectively. The important interferences with most ions like Cr+3, Mn2+, Fe3+, Zn2+, Hg2+, Mo+2, Pt2+ and Cd+2 were studied using the appropriate masking agents. The method was applied for the determination of Co(Ⅱ) in filling sample; the result obtained was incompatible with that by the flame atomic absorption spectrometry method. The organic reagent (DPTPD) was diagnosed as an anti-bacterial and an antioxidant.https://www.sciopen.com/article/10.5101/nbe.v12i2.p160-166heterocyclicpyrazolazoantipyreneantimicrobialantioxidants |
| spellingShingle | Shaimaa Mohsen. Essa Wisam Hindawi Hoidy Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants Nano Biomedicine and Engineering heterocyclic pyrazol azo antipyrene antimicrobial antioxidants |
| title | Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants |
| title_full | Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants |
| title_fullStr | Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants |
| title_full_unstemmed | Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants |
| title_short | Spectrophotometric Determination of Cobalt(Ⅱ) and Lead(Ⅱ) Using (1,5-Dimethyl-2-Phenyl-4-((2,3,4-Trihydroxy Phenyl) Diazenyl)-1H-Pyrazol-3(2H)-One) as Organic Reagent: Using It as Antimicrobial and Antioxidants |
| title_sort | spectrophotometric determination of cobalt ii and lead ii using 1 5 dimethyl 2 phenyl 4 2 3 4 trihydroxy phenyl diazenyl 1h pyrazol 3 2h one as organic reagent using it as antimicrobial and antioxidants |
| topic | heterocyclic pyrazol azo antipyrene antimicrobial antioxidants |
| url | https://www.sciopen.com/article/10.5101/nbe.v12i2.p160-166 |
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