|Document ID (ISN)||78116|
|ISSN - Serial title
||0340-0131 - International Archives of Occupational and Environmental Health
|Convention or series no.
||Drake P.L., Rojas M., Reh C.M., Mueller C.A., Jenkins F.M.
||Occupational exposure to airborne mercury during gold mining operations near El Callao, Venezuela
||Apr. 2001, Vol.74, No.3, p.206-212. Illus. 35 ref.
||The National Institute for Occupational Safety and Health (NIOSH) conducted a cross-sectional study during gold mining operations near El Callao, Venezuela to assess mercury exposures and mercury-related micro-damage to the kidneys. Mercury was used to remove gold by forming a mercury-gold amalgam. The gold was purified either by heating the amalgam in the open with a propane torch or by using a small retort. 38 workers participated in this study. Mercury exposure was monitored by sampling air from the workers' breathing zones. These air samples were used to calculate time-weighted average (TWA) mercury exposure concentrations. Results showed that 20% of the TWA airborne mercury exposure measurements were above the NIOSH recommended exposure limit of 50µg/m3, and 26% exceeded the American Conference of Governmental Industrial Hygienists Threshold Limit Value of 25µg/m3. Recommendations were made for improving retort design, for ventilation in gold shops, for medical surveillance and for educational programs.
||mercury; renal damage; Venezuela; exposure tests; gold mining
||threshold limit values; exposure evaluation; determination in urine; determination in air; cross-sectional study
||D - Periodical articles
|Country / State or Province||USA; Venezuela|
||Mines and quarries
|Broad subject area(s)
||Diseases of the kidney and the urinary system
Mining and quarrying
Mercury and compounds