游离二氧化硅
Free silica in geological exploration dust is measured by both Xray diffraction and pyrophosphoric acid methods.
对粉尘中游离二氧化硅含量进行了X线衍射法和焦磷酸消化法的对比测定。
Methods: According to" hazardous substances in workplace air monitoring, sampling rule ( GBZ 159-2004)" in the workplace air concentrations of total dust and free silica content monitoring.
方法:依据《作业场所空气中有害物质监测的采样规范(GBZ159-2004)》对工作场所空气中总粉尘浓度和游离二氧化硅含量进行监测。
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