Occupational exposure to benzene in China

Area of Science:

• Occupational Health
• Toxicology
• Environmental Health

Background:

• Benzene exposure is a significant occupational hazard.
• Understanding benzene poisoning prevalence and risk factors is crucial for public health.
• Previous studies have indicated potential health risks associated with benzene exposure in industrial settings.

Purpose of the Study:

• To determine the prevalence of benzene poisoning among Chinese workers.
• To identify geographical variations and workplace concentrations of benzene.
• To investigate the association between benzene exposure and aplastic anemia, particularly in shoemaking factories.

Main Methods:

• A large-scale epidemiological study involving the examination of over 500,000 workers exposed to benzene.
• Analysis of benzene concentrations in 50,255 workplaces.
• Comparative analysis of aplastic anemia prevalence in shoemakers versus the general population.

Main Results:

• A prevalence of 0.15% for benzene poisoning was identified among 508,818 examined workers.
• Higher prevalence rates were observed in Hangjou, Hefei, Nanjing, Shenyang, and Xian.
• Shoemakers exposed to benzene exhibited a 5.8-fold higher risk of developing aplastic anemia compared to the general population.
• A positive correlation was found between benzene concentration and poisoning prevalence in shoemaking factories.

Conclusions:

• Benzene poisoning represents a notable public health concern in China's industrial workforce.
• Specific occupational groups, like shoemakers, face elevated risks requiring targeted interventions.
• The findings underscore the urgent need for effective, practical hygiene standards to mitigate benzene-related health issues.