[The analysis of adverse health effects of occupational hazards factors in one solid waste landfill].
OBJECTIVE
To determine occupational hazards in work sites of a large solid waste landfill and analyze their adverse health effects.


METHODS
The national standardized detection methods were used to determine dust concentration, harmful gas and physical factors in worksites. Routine physical examination, pulmonary function, hearing tests and nervous system test were performed in workers for 2 consecutive years. Urine lead, cadmium and mercury contents were detected. The comet assay was use to measure DNA damage in peripheral blood lymphocytes among workers.


RESULTS
The main occupational hazard factors in this solid landfill are dust, harmful gas, high temperature and noise. The oxides, carbon monoxide, and noise and high temperatures in summer at some work sites exceeded the national occupational exposure limits. The prevalence of respiratory inflammation and rate of pulmonary function decrease among front-line workers and on-site technical managers are 21.2% and 11.5%, which are significantly higher than those among administrative staff (7.1% and 0) (P < 0.05). Nervous system abnormalities rate of front-line workers and on-site technical managers was 50.0%, which is significantly higher than that (26.7%) of administrative staff (P < 0.05). Because of long-term exposure to high intensity noice, hearing loss rate of bulldozer drivers was 10.3%. In addition, about 75% of workers with DNA damage in peripheral blood lymphocyte are front-line workers.


CONCLUSIONS
Adverse health effects from occupational hazards were observed among workers in this solid waste landfill.
Hubei Provincial Center for Disease Control and Prevention, Wuhan 430072, China.
Ting-Ming
TM
Shi
Shao-Fan
SF
Weng
Yue-Wei
YW
Liu
Hua
H
Tao
Xin
X
Wang
Yan-Fei
YF
Guo
He-Ping
HP
Wang
Hai-Jiao
HJ
Wang
Ke-Hong
KH
Wang
Dan
D
Yu
Wei-Hong
WH
Chen
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology*; D016273:Occupational Exposure; D012037:Refuse Disposal; D012141:Respiratory Tract Infections / Q000453:epidemiology; D012307:Risk Factors; D017132:Workplace