硅钼兰比色法测定粉尘中游离ＳｉＯ_２探讨泰州市卫生防疫站刘美英，褚兆洪目前，国内大多数单位仍采用焦磷酸法（３）进行粉尘中ＳｉＯ２的测定，此法条件难以控制，操作繁琐，回收也欠佳。因此，我们使用了硅钼兰比色法测定粉尘中游离ＳｉＯ２。方法的精密度和准确度试?.. Silicon molybdenum blue colorimetric determination of free SiO_2 dust Taizhou City Health and Epidemic Prevention Station Liu Meiying, Chu Zhaohong At present, most domestic units still using pyrophosphoric acid method (3) for the determination of SiO2 in the dust, this method is difficult to control conditions, cumbersome operation, Recycling is also poor. Therefore, we used silica molybdenum blue colorimetric determination of free SiO2 in the dust. Method precision and accuracy test?