Transcription of （3）珪藻土とその安全性 - nsk-web.org
1 6 . 6 0 . 2 0 . 2 8 0 . 8 9 0 . 4 8 9 . 2 SiO 8 . 1 6 . 2 5 . 2A l O 1 . 6 1 . 2 1 . 3F e O 1 . 7 0 . 9 0 . 9 CaO0.
2 4 0 . 8 0 . 6 MgO0 . 8 0 . 3 3 . 5 ) 5 1 23 1 22 4 3 6 4 0 m2 2 3 22 0 3 02 4 3 84 0 2 02 0 3 22 3 3 51 4 3 02 0 1 07 2 21 7 2 55 1 51 0 55 1 81 1 1 72 85 22 84 81 52 ( g / m l )0 . 2 8 0 . 6 0 0 . 2 8 0 . 4 5 5 86 88 1 0 1 2 4 02 51 3 (m2/g) 1. 2. 3. SiO2 ; IARC ( ) 1.
3 IARC WHO 2A 2B 3 4 2. ( ) 2A 2B 3. ACGIH A A2 A3 A4 A5 4. EPA CaH L S I NL 5. NTP K R 6.
4 EU 2 3 IARC 1 108 B IARC ACGIHEPANTPEU 11A2 K 11A2 3 1. (IARC ) 2. (2003 ).
5 (2002 ) 3 IARC ACGIHEPANTPEU Diatomite3 Diatomaceousearth(uncalcined) Diatomaceousearth(Flux-calcined)3 3 E = Q 1 E: (mg/m3) Q: (%) mg/m3 Q = 2 %)( ( +1) 1. 2.
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