Myers J E, Lewis P, Hofmeyr W
Takemi Program in International Health and Occupational Health Program, Harvard School of Public Health, Boston, Massachusetts.
Scand J Work Environ Health. 1989 Jun;15(3):180-7. doi: 10.5271/sjweh.1866.
The respiratory health and work environment of 575 brickworkers in five brickworks in Cape Town, South Africa, were investigated by means of a questionnaire, a physical examination, pulmonary function testing, chest radiography, and dust measurements. This study presents the background, aims, and methods of the determining dust exposure assignments. The mean concentrations of respirable dust and total dust were 2.22 and 15.16 mg/m3, respectively, with a mean free-silica percentage of 2.1%. Subjective and objective, as well as categorical and continuous, dust indicators were constructed for subsequent analyses, together with findings from the health survey, which are reported elsewhere.
通过问卷调查、体格检查、肺功能测试、胸部X光检查和粉尘测量，对南非开普敦五家砖厂的575名砖工的呼吸健康和工作环境进行了调查。本研究介绍了确定粉尘暴露量的背景、目的和方法。可吸入粉尘和总粉尘的平均浓度分别为2.22和15.16毫克/立方米，游离二氧化硅平均百分比为2.1%。构建了主观和客观、分类和连续的粉尘指标用于后续分析，同时还结合了健康调查的结果，这些结果已在其他地方报告。
