Quantitative determination in urine of hippuric acid and m- or p-methylhippuric acid, metabolites of toluene and m- or p-xylene
نویسندگان
چکیده
منابع مشابه
Urinary excretion of hippuric acid and m- or p-methylhippuric acid in the urine of persons exposed to vapours of toluene and m- or p-xylene as a test of exposure.
Ogata, M., Tomokuni, K., and Takatsuka, Y. (1970). Brit. J. industr. Med., 27,43-50. Urinary excretion of hippuric acid and mor p-methylhippuric acid in the urine of persons exposed to vapours of toluene and mor p-xylene as a test of exposure. Twenty-three male volunteers were exposed in groups of four or five to toluene and mand p-xylene vapour for periods of 3 hours or of 7 hours with one bre...
متن کاملThin-layer chromatography of hippuric and m-methylhippuric acid in urine after mixed exposure to toluene and xylene.
The separation of hippuric and m-methylhippuric acid as toluene and m-xylene metabolites present in urine of people exposed simultaneously to toluene and xylene is described. Chloroform was used for hippuric and m-methylhippuric acid extraction. Satisfactory separation of these metabolites was obtained on TLC plates covered with silica gels and developed in chloroform acetic acid-water (4:1:1);...
متن کاملQuantitative determination of hippuric and m-methylhippuric acids in urine by high-speed liquid chromatography.
High-speed liquid chromatography employing an ultraviolet photometric detector has been applied to the simultaneous determination of hippuric and m-methylhippuric acids in urine. Reversed-phase partition chromatography is carried out on a muBondapak C18 column with methanol-water as the eluent system. This method obviates the necessity for isolation or reaction of these acids before assay. The ...
متن کاملAbsorption of m-xylene vapours through the respiratory tract and excretion of m-methylhippuric acid in urine.
Absorption of m-xylene and excretion of m-methylhippuric acid were investigated under controlled conditions in ten volunteers aged 17-33 years. They were exposed to m-xylene vapours at concentrations of 100, 300, and 600 mg/m3. It was found that m-xylene vapour retained in the lungs tended to decrease at the end of the exposure. An exposure test was devised, based upon the results obtained duri...
متن کاملGrowth and Characterization of Urea Adduct with m-Nitrobenzoic Acid,m-Nitroaniline, and p-Xylene Mixtures
The urea adduct with the guests of m-nitrobenzoic acid, m-nitroaniline and p-xylene mixtures by adductive crystallization was successfully grown by slow evaporation method. The single crystals obtained were non-hygroscopic and good in size. The crystal structure of the grown crystal has been determined, and it belongs to the monoclinic system with centrosymmertic space group P21/c. Fourier tran...
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ژورنال
عنوان ژورنال: Occupational and Environmental Medicine
سال: 1969
ISSN: 1351-0711
DOI: 10.1136/oem.26.4.330