การประเมินความเสี่ยงต่อสุขภาพของช่างซ่อมเครื่องใช้ไฟฟ้าและอุปกรณ์อิเล็กทรอนิกส์จากการสัมผัสตะกั่ว แคดเมียม และโครเมียมในร้านซ่อมขนาดเล็ก เขตเทศบาลนครหาดใหญ่ จังหวัดสงขลา

Abstract

This study monitors concentrations of lead, cadmium and chromium in indoor air samples from small electrical/electronic repair shops in Songkhla Province, Southern Thailand. A health risk assessment was also conducted to assess the risks owing to lead, cadmium and chromium in the indoor air of the shops, Indoor air contents of lead, cadmium and chromium varied between 0.00800 - 0.02953 mg/m', 0.00003 - 0.00010 mg/m and 0.00010 - 0.00768 mg/m respectively. Levels of the selected heavy metals in all indoor air samples were lower than the established safe levels recommended by NIOSH (National Institute for Occupational Safety and Health) and American Conference of Governmental Industrial Hygiene (ACGIH). The indoor air concentrations were used to evaluate non-cancer and cancer risk assessment by calculating the hazard quotient (HQ) and lifetime cancer risk 5.60 x 10°- 2.03 x 10* and 1.00 x 10'-3.61 x 10' respectively. Non-cancer risk assessment revealed that the electric appliance repairers do not pose non-cancer risk from inhalation exposure. Conversely, the probabilities of cancer risk due to cadmium and chromium are significant.