Enthalpy of Solution and Kovats Retention Indices for Nitroaromatic Compounds on Stationary Phases Using Gas Chromatography

被引:31
作者
Caullield, Jeffrey A. [1 ]
Bruno, Thomas J. [2 ]
Miller, Keith E. [1 ]
机构
[1] Univ Denver, Dept Chem & Biochem, Denver, CO 80208 USA
[2] Natl Inst Stand & Technol, Thermophys Properties Div, Chem Sci & Technol Lab, Boulder, CO 80305 USA
关键词
SOLID CHROMATOGRAPHY; EXPLOSIVES; ADSORPTION; HEATS; CLAY;
D O I
10.1021/je800851j
中图分类号
O414.1 [热力学];
学科分类号
摘要
Worldwide terrorism has recently resulted in increased efforts to detect and identify explosive residues. Availability of experimentally determined thermochemical data for explosive compounds and their degradation products is limited, however. Gas chromatography was used to determine the enthalpy of solution, Delta H-sol, for a series of nitroaromatic explosives and explosive degradation products including nitrobenzene, 2-nitrotoluene, 3-nitrotoluene, 4-nitrotoluene, 1,2-dinitrobenzene, 1,3-dinitrobenzene, 1,4-dinitrobenzene, 2,4-dinitrotoluene, 2,6-dinitrotoluene, 3,4-dinitrotoluene, 3,5-dinitrotoluene, 1,3,5-trinitrobenzene, and 2,4,6-trinitrotoluene. Four polar stationary phases (by mass composition), namely, 80 % dimethyl + 20 % diphenyl polysiloxane, 14 % cyanopropylphenyl + 86 % dimethyl polysiloxane, 50 % phenyl + 50 % methyl polysiloxane, and 100 % polyethylene glycol, were evaluated with the 13 nitroaromatic compounds. Isothermal Kovats retention indices are also reported for the nitroaromatics as well as the Delta H-sol of several n-alkanes. Enthalpies reported herein were computed over a wide temperature range, thus net retention volumes are also tabulated to facilitate the specific needs of interested readers.
引用
收藏
页码:1814 / 1822
页数:9
相关论文
共 17 条
[1]  
[Anonymous], 2004, MODERN PRACTICE GAS, DOI DOI 10.1002/0471651141
[2]  
[Anonymous], CRC HDB BASIC TABLES
[3]   DETERMINATION OF HEATS OF ADSORPTION BY GAS-SOLID CHROMATOGRAPHY [J].
ATKINSON, D ;
CURTHOYS, G .
JOURNAL OF CHEMICAL EDUCATION, 1978, 55 (09) :564-566
[4]   DETERMINATION OF ENTROPIES OF ADSORPTION BY GAS-SOLID CHROMATOGRAPHY [J].
ATKINSON, D ;
CURTHOYS, G .
JOURNAL OF CHEMICAL EDUCATION, 1979, 56 (12) :802-804
[5]   Determination of heats of adsorption of hydrocarbons on a synthetic clay by gas-solid chromatography using a wall coated open tubular column approach [J].
Bruno, TJ ;
Lewandowska, A ;
Tsvetkov, F ;
Hanley, HJM .
JOURNAL OF CHROMATOGRAPHY A, 1999, 844 (1-2) :191-199
[6]   Wall-coated open-tubular column chromatography on an organo-clay stationary phase [J].
Bruno, TJ ;
Lewansowska, A ;
Tsvetkov, F ;
Miller, KE ;
Hanley, HJM .
JOURNAL OF CHROMATOGRAPHY A, 2002, 973 (1-2) :143-149
[7]  
Cazes J., 2002, CHROMATOGRAPHY THEOR
[8]   Enthalpy of vaporization by gas chromatography - A physical chemistry experiment [J].
Ellison, HR .
JOURNAL OF CHEMICAL EDUCATION, 2005, 82 (07) :1086-1088
[9]  
Kaiser M.A., 2004, MODERN PRACTICE GAS, P605
[10]  
Kolla P., 1997, Angew. Chem. Int. Ed. Engl, V36, P800