主要測(cè)試規(guī)格如下表：
annexdust compositioncomposition number 1 benign
particulate
weight % size ＊
chemical nomenclature
silica 二氧化矽
36
2 - 7
sio2
calcite 方解石
29
2 - 7
caco3
iron oxide 氧化鐵
12
2 - 4
fe2o3
alumina 鋁
8
2 - 5
al2o3
gypsum 石膏
5
2 - 7
caso4
paper fibers 紙纖維
3
3 – 150 diameter 12
cotton fibers 棉纖維
1
1
1
10 – 1500 diameter 13
2540 nom. diameter 13
6350 nom. diameter 13
polyester fibers多元酯
1
1
1
7 – 1500 nom. diameter 22
2540 nom. diameter 22
6350 nom. diameter 22
carbon black 黑碳
1.0
0.01 – 0.02
＊ notes：
1. all sizes are in micrometers.
2. paper, cottonpolyester fibers relate to length. all other elements are diameters.