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Showing 1 to 12 of 93 entries
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Hydrophobicity of complex organic mixtures.

Environmental science and pollution research international

Verbruggen EM, van Loon WM, Hermens JL.
PMID: 24235057
Environ Sci Pollut Res Int. 1996 Sep;3(3):163-8. doi: 10.1007/BF02985527.

Hydrophobicity is an important property in risk assessment of chemicals. A group parameter that reflects the hydrophobicity of technical mixtures is not yet available. However, many substances are complex organic mixtures, for which it is practically impossible to determine...

Syntheses and Peculiar Behavior in Solutions of Optically Active Telluronium Salts.

The Journal of organic chemistry

Shimizu T, Urakubo T, Kamigata N.
PMID: 11667786
J Org Chem. 1996 Nov 15;61(23):8032-8038. doi: 10.1021/jo960785k.

A diastereomeric (epimeric) mixture of ethylmethylphenyltelluronium (1S)-(+)-camphor-10-sulfonate (dia.-1) was optically resolved by fractional recrystallization into the diastereomerically pure isomers (R)(Te)-1 and (S)(Te)-1. The absolute configurations of the isomers were determined by the X-ray crystallographic analysis of (R)(Te)-1. Enantiomerically pure...

An ab Initio Study of Some Phenyl- and (Halophenyl)alkali Compounds.

The Journal of organic chemistry

Streitwieser A, Abu-Hasanyan F, Neuhaus A, Brown F.
PMID: 11667178
J Org Chem. 1996 May 03;61(9):3151-3154. doi: 10.1021/jo9516392.

Ab initio calculations are presented for alkali metal derivatives of fluoro- and chlorobenzenes for comparison with previously determined experimental substitutent effects. Calculated substituent effects for one alkali metal are linearly related to those of another. (Difluorophenyl)lithiums show additivity of...

Trace analysis of chlorobenzenes in water samples using headspace solvent microextraction and gas chromatography/electron capture detection.

Talanta

Khajeh M, Yamini Y, Hassan J.
PMID: 18970686
Talanta. 2006 Jul 15;69(5):1088-94. doi: 10.1016/j.talanta.2005.12.020. Epub 2006 Jan 18.

In the present work, a rapid method for the extraction and determination of chlorobenzenes (CBs) such as monochlorobenzene, 1,2-dichlorobenzene, 1,3-dichlorobenzene, 1,4-dichlorobenzene, 1,2,3-trichlorobenzene and 1,2,4-trichlorobenzene in water samples using the headspace solvent microextraction (HSME) and gas chromatography/electron capture detector (ECD)...

Metabolism of Chlorotoluenes by Burkholderia sp. Strain PS12 and Toluene Dioxygenase of Pseudomonas putida F1: Evidence for Monooxygenation by Toluene and Chlorobenzene Dioxygenases.

Applied and environmental microbiology

Lehning A, Fock U, Wittich R, Timmis KN, Pieper DH.
PMID: 16535607
Appl Environ Microbiol. 1997 May;63(5):1974-9. doi: 10.1128/aem.63.5.1974-1979.1997.

The degradation of toluene by Pseudomonas putida F1 and of chlorobenzenes by Burkholderia sp. strain PS12 is initiated by incorporation of dioxygen into the aromatic nucleus to form cis-dihydrodihydroxybenzenes. Toluene-grown cells of P. putida F1 and 3-chlorobenzoate-grown cells of...

Molecular structure, reactivity, and toxicity of the complete series of chlorinated benzenes.

The journal of physical chemistry. A

Padmanabhan J, Parthasarathi R, Subramanian V, Chattaraj PK.
PMID: 16331949
J Phys Chem A. 2005 Dec 08;109(48):11043-9. doi: 10.1021/jp0538621.

The structure and chemical reactivity profiles of all 12 chlorobenzenes have been investigated using the density functional theory and ab initio molecular orbital calculations. Global and local reactivity descriptors such as electrophilicity index and local philicity, respectively, of the...

A solid-phase microextraction fiber coated with diglycidyloxycalix[4]arene yields very high extraction selectivity and sensitivity during the analysis of chlorobenzenes in soil.

Analytical and bioanalytical chemistry

Li X, Zeng Z, Xu Y.
PMID: 16491344
Anal Bioanal Chem. 2006 Mar;384(6):1428-37. doi: 10.1007/s00216-005-0281-5. Epub 2006 Feb 21.

A novel fiber coated with novel sol-gel (5,11,17,23-tetra-tert-butyl-25,27-dihydroxy-26,28-diglycidyloxycalix[4]arene/hydroxy-terminated silicone oil; diglycidyloxy-C[4]/OH-TSO) was prepared for use with headspace solid-phase microextraction (HS-SPME) combined with gas chromatography (GC) and electron capture detection (ECD), which was applied in order to determine nine chlorobenzenes...

Polychlorinated biphenyls, organochlorine pesticides and chlorobenzenes content of livers from Atlantic cod (Gadus morhua) caught off Halifax Nova Scotia.

Environmental monitoring and assessment

Freeman HC, Uthe JF, Silk PJ.
PMID: 24257865
Environ Monit Assess. 1984 Dec;4(4):389-94. doi: 10.1007/BF00394176.

The mean levels ± s.d., (ranges) of organochlorines, pesticides, chlorobenzenes and polychlorinated biphenyl were determined in the livers of 100 Atlantic cod (Gadus morhua) caught off the east coast of Canada in 1980 and were as follows: PCB 1.71±0.90...

Scanning laser terahertz near-field imaging system.

Optics express

Serita K, Mizuno S, Murakami H, Kawayama I, Takahashi Y, Yoshimura M, Mori Y, Darmo J, Tonouchi M.
PMID: 22714323
Opt Express. 2012 Jun 04;20(12):12959-65. doi: 10.1364/OE.20.012959.

We have proposed and developed a scanning laser terahertz (THz) near-field imaging system using a 1.56 μm femtosecond fiber laser for high spatial resolution and high-speed measurement. To obtain the two-dimensional (2D) THz images of samples, the laser pulses...

Nanostructured molybdenum oxide in a 3D metal organic framework and in a 2D polyoxometalate network for extraction of chlorinated benzenes prior to their quantification by GC-MS.

Mikrochimica acta

Bagheri H, Karimi Zandian F, Javanmardi H, Abbasi A, Golzari Aqda T.
PMID: 30413895
Mikrochim Acta. 2018 Nov 09;185(12):536. doi: 10.1007/s00604-018-3070-5.

A three-dimensional metal organic framework (3D-MOF) and a two-dimensional polyoxometalate (2D-POM), both incorporating nanostructured molybdenum (VI) oxide, were synthesized and implemented for headspace needle trap extraction of traces of chlorobenzenes (CBs). The 3D-MOF of type {(Mo

Three-dimensional nanofiber scaffolds are superior to two-dimensional mats in micro-oriented extraction of chlorobenzenes.

Mikrochimica acta

Bagheri H, Manshaei F, Rezvani O.
PMID: 29884926
Mikrochim Acta. 2018 Jun 08;185(7):322. doi: 10.1007/s00604-018-2858-7.

Three-dimensional (3D) polyamide scaffolds were fabricated by applying a solvent bath as the collecting element. Electrospun nanofibers were immersed into the solvent bath to give a material with a laminated 3D texture. In parallel, 2D nanofibers were synthesized and...

A nanoporous carbon material coated onto steel wires for solid-phase microextraction of chlorobenzenes prior to their quantitation by gas chromatography.

Mikrochimica acta

Cheng H, Song Y, Bian Y, Wang F, Ji R, He W, Gu C, Ouyang G, Jiang X.
PMID: 29594537
Mikrochim Acta. 2017 Dec 18;185(1):56. doi: 10.1007/s00604-017-2539-y.

A nanoporous carbon material was synthesized by heating potassium citrate without using a template or an activating agent. It is shown to represent a viable coating for use in solid-phase microextraction. The material is thermally stable and mainly consists...

Showing 1 to 12 of 93 entries