Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples
A simple and rapid indirect spectrophotometric method for determination of methamidophos in water, soil and vegetable samples has been described. Methamidophos reacts with acid produced from p-dimethylaminobenzaldehyde (p-DMAB) as a result of Cannizaro’s reaction. The resultant adduct undergoes cond...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Chemical Society of Ethiopia
2015-07-01
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| Series: | Bulletin of the Chemical Society of Ethiopia |
| Subjects: | |
| Online Access: | http://www.ajol.info/index.php/bcse/article/view/119312 |
| _version_ | 1811212563241762816 |
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| author | J. Shah M. R. Jan M. Muhammad B. Ara I. U. Rehman |
| author_facet | J. Shah M. R. Jan M. Muhammad B. Ara I. U. Rehman |
| author_sort | J. Shah |
| collection | DOAJ |
| description | A simple and rapid indirect spectrophotometric method for determination of methamidophos in water, soil and vegetable samples has been described. Methamidophos reacts with acid produced from p-dimethylaminobenzaldehyde (p-DMAB) as a result of Cannizaro’s reaction. The resultant adduct undergoes condensation reaction in acidic medium forming a yellow colored product. Absorbance of the colored product was measured at 405 nm and pH 3 against a reagent blank. The Beer’s law range is obeyed in the range 1-30 µg mL-1 with molar absorptivity of 2.8 ×103 L mol-1 cm-1. The limit of detection and quantification were found to be 0.20±0.03 and 0.60±0.04 µg mL-1 respectively. The proposed method was effectively applied for determination of methamidophos in various samples with percent recoveries in the range of 96±0.08 to 102±0.06 %. |
| first_indexed | 2024-04-12T05:31:10Z |
| format | Article |
| id | doaj.art-4285f7334028498c831c5168bb8d573c |
| institution | Directory Open Access Journal |
| issn | 1011-3924 1726-801X |
| language | English |
| last_indexed | 2024-04-12T05:31:10Z |
| publishDate | 2015-07-01 |
| publisher | Chemical Society of Ethiopia |
| record_format | Article |
| series | Bulletin of the Chemical Society of Ethiopia |
| spelling | doaj.art-4285f7334028498c831c5168bb8d573c2022-12-22T03:46:04ZengChemical Society of EthiopiaBulletin of the Chemical Society of Ethiopia1011-39241726-801X2015-07-01292311318http://dx.doi.org/10.4314/bcse.v29i2.13Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samplesJ. ShahM. R. JanM. MuhammadB. AraI. U. RehmanA simple and rapid indirect spectrophotometric method for determination of methamidophos in water, soil and vegetable samples has been described. Methamidophos reacts with acid produced from p-dimethylaminobenzaldehyde (p-DMAB) as a result of Cannizaro’s reaction. The resultant adduct undergoes condensation reaction in acidic medium forming a yellow colored product. Absorbance of the colored product was measured at 405 nm and pH 3 against a reagent blank. The Beer’s law range is obeyed in the range 1-30 µg mL-1 with molar absorptivity of 2.8 ×103 L mol-1 cm-1. The limit of detection and quantification were found to be 0.20±0.03 and 0.60±0.04 µg mL-1 respectively. The proposed method was effectively applied for determination of methamidophos in various samples with percent recoveries in the range of 96±0.08 to 102±0.06 %.http://www.ajol.info/index.php/bcse/article/view/119312SpectrophotometricMethamidophosp-Dimethylaminobenzaldehyde (p-DMAB)Cannizaro’s reaction |
| spellingShingle | J. Shah M. R. Jan M. Muhammad B. Ara I. U. Rehman Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples Bulletin of the Chemical Society of Ethiopia Spectrophotometric Methamidophos p-Dimethylaminobenzaldehyde (p-DMAB) Cannizaro’s reaction |
| title | Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples |
| title_full | Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples |
| title_fullStr | Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples |
| title_full_unstemmed | Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples |
| title_short | Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples |
| title_sort | development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil water and vegetable samples |
| topic | Spectrophotometric Methamidophos p-Dimethylaminobenzaldehyde (p-DMAB) Cannizaro’s reaction |
| url | http://www.ajol.info/index.php/bcse/article/view/119312 |
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