Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones
- Author
- Miklós Görgényi, Herman Van Langenhove (UGent) and Zoltán Király
- Organization
- Abstract
- Kovats retention indices (I) of C-1-C-8 aldehydes and ketones and their 2,4-dinitrophenylhydrazones (DNPHs) were determined. The temperature gradient of the retention indices of keto hydrazones is higher than that of aldehyde hydrazones, hence the separation of certain co-eluting hydrazones is possible by changing the elution temperature. The retention index difference between the E- and Z-isomers increases with increasing asymmetry in the groups attached to the hydrate carbon atom. The slope a in the equation I-DNPH = aI(oxo), + b is near unity for not heavily branched aldehyde DNPHs, whereas for keto E-isomers it is less than unity and changes with the structure.
- Keywords
- ALKANES, INDEXES, FILTERS, FORMALDEHYDE, AIR, ALDEHYDES, VOLATILE CARBONYL-COMPOUNDS, PERFORMANCE LIQUID-CHROMATOGRAPHY
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-192564
- MLA
- Görgényi, Miklós, et al. “Prediction of Gas Chromatographic Retention Indices of 2,4-Dinitrophenylhydrazones.” JOURNAL OF CHROMATOGRAPHY A, vol. 693, no. 1, 1995, pp. 181–85, doi:10.1016/0021-9673(94)01019-B.
- APA
- Görgényi, M., Van Langenhove, H., & Király, Z. (1995). Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones. JOURNAL OF CHROMATOGRAPHY A, 693(1), 181–185. https://doi.org/10.1016/0021-9673(94)01019-B
- Chicago author-date
- Görgényi, Miklós, Herman Van Langenhove, and Zoltán Király. 1995. “Prediction of Gas Chromatographic Retention Indices of 2,4-Dinitrophenylhydrazones.” JOURNAL OF CHROMATOGRAPHY A 693 (1): 181–85. https://doi.org/10.1016/0021-9673(94)01019-B.
- Chicago author-date (all authors)
- Görgényi, Miklós, Herman Van Langenhove, and Zoltán Király. 1995. “Prediction of Gas Chromatographic Retention Indices of 2,4-Dinitrophenylhydrazones.” JOURNAL OF CHROMATOGRAPHY A 693 (1): 181–185. doi:10.1016/0021-9673(94)01019-B.
- Vancouver
- 1.Görgényi M, Van Langenhove H, Király Z. Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones. JOURNAL OF CHROMATOGRAPHY A. 1995;693(1):181–5.
- IEEE
- [1]M. Görgényi, H. Van Langenhove, and Z. Király, “Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones,” JOURNAL OF CHROMATOGRAPHY A, vol. 693, no. 1, pp. 181–185, 1995.
@article{192564, abstract = {{Kovats retention indices (I) of C-1-C-8 aldehydes and ketones and their 2,4-dinitrophenylhydrazones (DNPHs) were determined. The temperature gradient of the retention indices of keto hydrazones is higher than that of aldehyde hydrazones, hence the separation of certain co-eluting hydrazones is possible by changing the elution temperature. The retention index difference between the E- and Z-isomers increases with increasing asymmetry in the groups attached to the hydrate carbon atom. The slope a in the equation I-DNPH = aI(oxo), + b is near unity for not heavily branched aldehyde DNPHs, whereas for keto E-isomers it is less than unity and changes with the structure.}}, author = {{Görgényi, Miklós and Van Langenhove, Herman and Király, Zoltán}}, issn = {{0021-9673}}, journal = {{JOURNAL OF CHROMATOGRAPHY A}}, keywords = {{ALKANES,INDEXES,FILTERS,FORMALDEHYDE,AIR,ALDEHYDES,VOLATILE CARBONYL-COMPOUNDS,PERFORMANCE LIQUID-CHROMATOGRAPHY}}, language = {{eng}}, number = {{1}}, pages = {{181--185}}, title = {{Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones}}, url = {{http://doi.org/10.1016/0021-9673(94)01019-B}}, volume = {{693}}, year = {{1995}}, }
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