Ứng dụng phương pháp quang phổ hồng ngoại phân tích hàm lượng silic tự do trong bụi hô hấp

• Tác giả: Duy Bảo Nguyễn
• Ngôn ngữ: vie
• Ký hiệu phân loại: 613.63 Personal health and safety
• Thông tin xuất bản: Y học dự phòng, 2013
• Mô tả vật lý: 106-110
• Bộ sưu tập: Metadata
• ID: 560866

Tóm tắt

 Establishing a method analyze free silica content in respirable dust by infrared spectrophotometer on M-500. The author applied a new method to analyze free silica content in respirable dust samples from construction material producing units and the results were obtained as follows: The directrix with linear span was 53-210. Linear equation Y = 1.1488X-0.000039 with r = 99.98
  CV = 0.041
  sensitivity: 50llg. The process of sample analysis with recovered rate reaches 84.3 percent. The results of analyzing free silica content in respirable dust samples were as follows: Thai Nguyen refractory brick: 18.4 to 26.4 percent
  Dong Nai refractory brick: 12 to 1.6 percent
  Hai Phong cement factory: 3.4 to 5 percent
  Ha Tien cement factory: 0.6 to 2.1 percent
  Phu Ly quarry 4.6 to 5 percent
  Hoa An quarry: 22.8 to 23.2 percent.