NS-EN 17289-3:2020
散装材料的表征粒度加权细粒部分和结晶二氧化硅含量的测定第3部分：沉降方法

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适用范围: Full Description ADOPTED_FROM:EN 17289-3:2020 This document specifies the determination of the size-weighted fine fraction (SWFF) and the size-weighted fine fraction of crystalline silica (SWFFCS) in bulk materials by means of a sedimentation method using a liquid sedimentation technique. The purpose of this document is to allow users to evaluate bulk materials with regard to their size-weighted fine fraction and crystalline silica content. NOTE For preparation of the sample and determination of crystalline silica by X-ray Powder Diffractometry (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR) see FprEN 17289 1. Specific methods for the evaluation of SWFF for specific bulk materials are specified in several Annexes. This document is applicable for crystalline silica containing bulk materials which have been fully investigated and validated for the evaluation of the size-weighted fine fraction and crystalline silica.

NS-EN 17289-3:2020散装材料的表征 粒度加权细粒部分和结晶二氧化硅含量的测定 第3部分：沉降方法