Personal Exposure to Dust, Endotoxin and Crystalline silica in California Agriculture

摘要

Aims: The aim of this study was to measure personal exposure to dust, endotoxin and crystalline silica during various agricultural operations in California over a period of one year. Methods: The farms were randomly selected in Yolo and Solano counties and workers were Invited to wear personal sampling equipment to measure inhalable and respirable dust levels during Various operations. The samples were analysed for endotoxin using the Limulus Amebocyte Lysate Assay and crystalline silica content using X-ray diffraction.