Alkyl phosphates analysis

Bradway DE, Moseman R, May R. 1981. Analysis of alkyl phosphates by extractive alkylation. Bull Environ Contam Toxicol 26 520-523. 

Shafik T, Bradway DE, Enos HF, et al. 1973. Human exposure to organophosphorus pesticides modified procedure for the gas-liquid chromatographic analysis of alkyl phosphate metabolites in urine. J Agric Food Chem 21 625-629. 

Observations were made of lipid-protein phases in which the structure is determined mainly by the protein. Raman spectroscopy is a useful method for structure analysis of such phases. The structures described above were analyzed successfully by an x-ray diffraction technique. Lipid-protein complexes, however, are often amorphous, and alternative methods to study their structures are therefore needed. It was demonstrated that Raman spectroscopy can be used to obtain structural information about lipid-protein interaction (16, 17). It is thus possible to determine the conformation as well as the type of environment of the lipid molecules. With the protein, interpretation is more complicated. It is usually possible to determine whether the complex has the same protein conformation as the component used in the preparation, or, if a change occurs, it may be possible to correlate it with denaturation of the pure protein. For complexes formed by long-chain alkyl phosphates and insu-... 

Jeon, J.S. et al.. In situ analysis of alkyl phosphate surfactant adsorption at the alumina/aqueous solution interface. Colloids Surf. A, 111, 29, 1996. 

Moate et al. and Kupfermann et al. presented analytical methods involving SPE for the extraction of alkyl phosphates from urine. Moate et alf used SPE for sample cleanup followed by azeotrope distillation and then derivatization of the analytes. Determination of the analytes was achieved using GC-FPD. In contrast, Kupfermann et alf purified the derivatized extract of urine samples from a case of OP poisoning on silica SPE columns followed by quantitative analysis by GC-MS. The LODs ranged from 3 to biiginL. ... 

Kupfermann N, Schmoldt A, Steinhart H. Rapid and sensitive quantitative analysis of alkyl phosphates in urine after organophosphate poisoning. J Anal Toxicol 2004 28 242-8. 

Elhngton, J. J. and Trusty, C. D., Quantitative analysis of alkyl phosphates using automated cool on-column aqueous injection, J. High Resolut. Chromatogr., 12, 470-473, 1989. 

QuantitativeXPS Analysis of Self—Assembled Alkyl Phosphates on Titanium Dioxide. Since the studied SAMs on titanium dioxide... 

Sokolov et al. [26] have reported successful analysis of a mixture of pure sodium dodecyl sulphate and pure sodium dodecyl phosphate (mono- or diester not specified) by this method, and Ivanov et al. [27] analysed alkyl phosphates by titration of the column effluent with alkali to bromocresol green. 

Takahara and co-workers have modified imogolite nanotubes with alkyl phosphate (3) in an aqueous solution. The XPS analysis provided evidence for the covalent bonding between imogolite surface and the phosphate groups. ... 

Butyl diphenyl phosphate, 11 494 Butyl elastomers, 4 409 Butylene(s), 4 402-433 10 486 alkylation, 2 175-176 analysis, 4 421-422 chemical reactions, 4 404-410 economic aspects, 4 421 equilibrium distribution of ideal gas at selected temperatures, 4 409t feedstock for higher aliphatic alcohols, 2 211... 

Another growing technique is super-critical fluid chromatography. Recent references to soil analysis include the following applications aliphatic hydrocarbons, polyaromatic hydrocarbons, polychlorobiphenyls, dioxins, alkyl and aryl phosphates, chloro, organophosphorus, triazine, substituted urea, phenoxy acetic acid, Dacthal herbicides and insecticides and mixtures of herbicides and pesticides and mixtures of organic compounds. 

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