出版社：National Institute of Occupational Safety and Health
摘要：Heat treatment of the serpentine minerals changed their biological effects in original state, and all serpentine specimens showed a remarkable cytotoxic and hemolytic action after treatment around 650°C. The mice injected intraperitoneally with minerals treated in this temperature range mostly died within 48 hours after injection, while with original mineral or the minerals heated in the other heat ranges did not. To clarify this reason mineralogical study was carried out by means of X-ray, thermal differential and infrared analyses and it was found that materials treated in this temperature range showed a highly disorganized structure. It was assumed that the change of biological effects by heat treatment may be related to the disordered state of serpentine in the process of their transformation into forsterite.
