De Rosa E, Mazzotta M, Forin F, Corradini M A
Lav Um. 1975 Jan;27(1):18-28.
Four groups of workers of the rotogravure, shoe and plastic industries, all exposed to toluene, were studied by the authors. Hippuric acid was measured by a colorimetric method, on urines collected at the end of the work shift. From the obtained results, the authors believe that the biological standard (MAC) for an homogeneous working group could be 1100 mg/liter. Such a threshold, which could however be further revised, ought not to be exceeded; higher toluene concentrations will require technical changes of the working environment.
作者对四组分别来自凹版印刷、制鞋和塑料行业且均接触甲苯的工人进行了研究。采用比色法对工作班次结束时收集的尿液中的马尿酸进行了测定。根据所得结果，作者认为一个同质工作群体的生物标准（MAC）可为1100毫克/升。然而，这样一个阈值可能会进一步修订，不应被超过；更高的甲苯浓度将需要对工作环境进行技术改造。
