Ojima Jun
National Institute of Industrial Health, Tama-ku, Kawasaki 214-8585, Japan.
J UOEH. 2006 Jun 1;28(2):203-7. doi: 10.7888/juoeh.28.203.
In Japan, there are two commonly used regulations on respirable dust concentration: the Occupational Exposure Limit (OEL), recommended by the Japan Society for Occupational Health, and the Administrative Control Level (ACL). Both depend on the crystalline silica content in dust. Until 2004, the ACL for respirable dust conformed to the OEL. However, the ACL was revised in 2005 in light of the OEL and the American Conference of Governmental Industrial Hygienists (ACGIH)'s Threshold Limit Value (TLV), same value as National Institute for Occupational Safety and Health (NIOSH)'s Recommended Exposure Limit (REL). In this paper, the author intends to clarify the stringency of the current ACL by comparing it with the OEL and the ACGIH's TLV. In addition, the effect of the analytical error due to the phosphoric acid method in the current and former ACLs is shown.
在日本，有两种常用的可吸入粉尘浓度规定：日本职业卫生学会推荐的职业接触限值（OEL）和行政控制水平（ACL）。两者均取决于粉尘中的结晶二氧化硅含量。直到2004年，可吸入粉尘的ACL与OEL一致。然而，ACL在2005年根据OEL和美国政府工业卫生学家会议（ACGIH）的阈限值（TLV）进行了修订，该值与美国国家职业安全与健康研究所（NIOSH）的推荐暴露限值（REL）相同。在本文中，作者旨在通过将当前的ACL与OEL和ACGIH的TLV进行比较，来阐明其严格程度。此外，还展示了现行和以前的ACL中磷酸法分析误差的影响。
