Bieniek G, Wilczok T
Br J Ind Med. 1981 Aug;38(3):304-6. doi: 10.1136/oem.38.3.304.
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);p-dimethylaminobenzaldehyde in acetic acid anhydride was applied to develop the colour. The sensitivity of the method was 6 micrograms hippuric acid per 1 ml urine and recovery was 100% (+/- 1).
描述了同时接触甲苯和二甲苯的人群尿液中作为甲苯和间二甲苯代谢物的马尿酸和间甲基马尿酸的分离方法。用氯仿提取马尿酸和间甲基马尿酸。在涂有硅胶的薄层色谱板上,以氯仿 - 乙酸 - 水(4:1:1)展开,可实现这些代谢物的良好分离;用乙酸酐中的对二甲氨基苯甲醛显色。该方法的灵敏度为每1 ml尿液中6微克马尿酸,回收率为100%(±1)。