OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (16): 2279-2283.

• Investigation and Research • Previous Articles     Next Articles

Analysis of blood lead levels and occupational health status among some lead-exposed workers in Tianjin

ZHAO Nianmei, WANG Dayu(), SHAN Baorong   

  1. Health Monitoring Management CenterTianjin Occupational Diseases Precaution and Therapeutic HospitalTianjin 300011, China
  • Received:2025-04-28 Revised:2025-10-20 Online:2026-08-15 Published:2026-08-10
  • Contact: WANG Dayu,E-mail:w8366266@126.com

Abstract:

Objective To understand blood lead levels and occupational health status of lead-exposed workers in Tianjin,and analyze their associations with gender,age,and work seniority,in order to provide a scientific basis for occupational health surveillance. Methods A total of 1 022 lead-exposed workers who underwent occupational health examinations at Tianjin Occupational Diseases Precaution and Therapeutic Hospital from October 2022 to December 2023 were selected as the research subjects. According to GBZ 188-2014 "Technical Specifications for Occupational Health Surveillance",blood lead,blood routine,urine routine,electrocardiogram and other examinations were conducted,and the data were analyzed. Results The abnormal rate of blood lead was higher in males than in females,with a statistically significant difference(χ2=20.231,P<0.01). The abnormal rate of blood lead was highest in the 1-<10 years of work experience,with a statistically significant difference between groups(χ2=11.681,P<0.05). There was no statistically significant difference in the abnormal rate of blood lead between different age groups(χ2=5.433,P>0.05). In occupational health examinations of different genders,there were statistically significant differences in the abnormal rates of electrocardiogram,hemoglobin,and urine routine(χ2=8.042,68.951,17.273,all P<0.05); There was no statistically significant difference in the abnormal rate of white blood cells(χ2=1.412,P>0.05). Conclusion Protective measures should be strengthened for males and shorter-seniority workers,and targeted examinations should be conducted regularly to reduce the risk of lead poisoning and protect occupational health rights. Future research can further analyze the differences in exposure levels under different types of work and environmental lead concentrations.

Key words: Lead exposure, Blood lead levels, Occupational health, Gender differences, Work seniority

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