Abstract: Objective To understand the concentration and hazards of eight volatile organic compounds（VOCs） in the air of employer's workplace using organic solvents in a certain district of Chongqing,and to provide scientific evidence for employers to carry out the prevention and treatment of occupational diseases. Methods According to the requirements of relevant national standards,air samples were taken from 18 workplaces of employers in Chongqing,the benzene,toluene,xylene,ethylbenzene,chloroform,trichloroethylene,1,2-dichloroethane and n-hexane were detected by solvent desorption-gas chromatography,and the detection results were analyzed. Results There were a total of 51 positions with a VOCs over-standard rate of 29.41%. Out of 255 samples,the VOCs detection rate was 67.84%. The hazardous factors that exceed the standard included benzene,xylene and 1,2-dichloroethane,with over-standard rate of 9.80%,7.84%,and 21.57%,respectively. The over-standard rate and over-standard multiple of 1,2-dichloroethane were the highest,exceeding the limit by 34.87 times. The exceedance positions were all distributed in small enterprises. Conclusion The hazards of benzene,xylene and 1,2-dichloroethane were serious in workplace of employers in a certain district of Chongqing. Employers should take targeted protective measures according to the excessive situation of VOCs to control the concentration of VOCs in the air in the workplace and protect the health of workers.

Key words: Workplace, Organic solvent, Volatile organic compounds, Detection results