A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air
A simple visual and tristimulus colorimetric method (three-dimensional system CIE–L*a*b*) for the determination of trace amounts of diphosgene in air has been developed. The method is based on the suction of diphosgene vapors through a modified cotton fabric filter fixed in a special adapter. Prior...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2007-10-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.shd.org.yu/JSCS/Vol72/No10/JSCS_V72_No10-13.pdf |
| _version_ | 1823995872562642944 |
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| author | VLADIMÍR PITSCHMANN ZBYNĚK KOBLIHA EMIL HALÁMEK IVANA TUŠAROVÁ |
| author_facet | VLADIMÍR PITSCHMANN ZBYNĚK KOBLIHA EMIL HALÁMEK IVANA TUŠAROVÁ |
| author_sort | VLADIMÍR PITSCHMANN |
| collection | DOAJ |
| description | A simple visual and tristimulus colorimetric method (three-dimensional system CIE–L*a*b*) for the determination of trace amounts of diphosgene in air has been developed. The method is based on the suction of diphosgene vapors through a modified cotton fabric filter fixed in a special adapter. Prior to analysis, the filter is saturated with a chromogenic reagent based on 4-(p-nitrobenzyl)pyridine. The optimal composition of the reagent is 2 g of 4-(p-nitrobenzyl)pyridine and 4 g of N-phenylbenzylamine in 100 ml of a 50:50 ethanol–glycerol mixture. The intensity of the formed red coloration of the filter is evaluated visually or by a tristimulus colorimeter (LMG 173, Lange, Germany). The detection limit is 0.01 mg m-3. Acetyl chloride and benzoyl chloride react in 150 and 50 times higher concentrations, respecttively. The method is suitable for mobile field analysis. |
| first_indexed | 2024-12-18T16:54:40Z |
| format | Article |
| id | doaj.art-c193004894c148928f98e9b947e4d874 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-18T16:54:40Z |
| publishDate | 2007-10-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-c193004894c148928f98e9b947e4d8742022-12-21T21:00:44ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392007-10-01721010311037A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in airVLADIMÍR PITSCHMANNZBYNĚK KOBLIHAEMIL HALÁMEKIVANA TUŠAROVÁA simple visual and tristimulus colorimetric method (three-dimensional system CIE–L*a*b*) for the determination of trace amounts of diphosgene in air has been developed. The method is based on the suction of diphosgene vapors through a modified cotton fabric filter fixed in a special adapter. Prior to analysis, the filter is saturated with a chromogenic reagent based on 4-(p-nitrobenzyl)pyridine. The optimal composition of the reagent is 2 g of 4-(p-nitrobenzyl)pyridine and 4 g of N-phenylbenzylamine in 100 ml of a 50:50 ethanol–glycerol mixture. The intensity of the formed red coloration of the filter is evaluated visually or by a tristimulus colorimeter (LMG 173, Lange, Germany). The detection limit is 0.01 mg m-3. Acetyl chloride and benzoyl chloride react in 150 and 50 times higher concentrations, respecttively. The method is suitable for mobile field analysis.http://www.shd.org.yu/JSCS/Vol72/No10/JSCS_V72_No10-13.pdftristimulus colorimetrydiphosgeneair analysis4-(p-nitrobenzyl)pyridineN-phenylbenzylamine |
| spellingShingle | VLADIMÍR PITSCHMANN ZBYNĚK KOBLIHA EMIL HALÁMEK IVANA TUŠAROVÁ A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air Journal of the Serbian Chemical Society tristimulus colorimetry diphosgene air analysis 4-(p-nitrobenzyl)pyridine N-phenylbenzylamine |
| title | A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air |
| title_full | A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air |
| title_fullStr | A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air |
| title_full_unstemmed | A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air |
| title_short | A simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air |
| title_sort | simple in situ visual and tristimulus colorimetric method for the determination of diphosgene in air |
| topic | tristimulus colorimetry diphosgene air analysis 4-(p-nitrobenzyl)pyridine N-phenylbenzylamine |
| url | http://www.shd.org.yu/JSCS/Vol72/No10/JSCS_V72_No10-13.pdf |
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