OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (19): 2613-2617.

• Treatise——Occupational Health and Occupational Diseases • Previous Articles     Next Articles

Application of comprehensive index method in occupational health risk assessment of chemical hazardous factors in the workplaces of phosphoric acid manufacturing enterprises from yellow phosphorus

YANG Jing1, NIE Chuanli1, WU Jianhua2, BAO Liqin1(), DUAN Pingning1, HUANG Ji1()   

  1. 1 Guangxi Zhuang Autonomous Region Institute for the Prevention and Treatment of Occupational DiseasesNanningGuangxi 530021, China
    2 Guangxi Zhongshuo Testing Technology Co.Ltd,NanningGuangxi 530009, China
  • Received:2025-06-17 Revised:2025-10-15 Online:2026-10-01 Published:2026-08-17
  • Contact: HUANG Ji,E-mail:15607300@qq.com;BAO Liqin,E-mail:2834125068@qq.com

Abstract:

Objective To understand the distribution and exposure levels of occupational disease hazard factors in a phosphate production enterprise in Fangchenggang City,accurately predict its occupational health risk level,and provide reasonable and effective occupational disease hazard control measures for the enterprise. Methods Taking a certain phosphoric acid production enterprise in Fangchenggang City of Guangxi as the research object,the current situation of occupational disease hazards was evaluated in December 2022. Through on-site investigations in occupational health,data on the physical and chemical properties and toxicological characteristics of chemical hazardous factors were collected for comprehensive analysis to determine the risk level. The exposure concentration and exposure index of chemical hazardous factors obtained through on-site detection in occupational health and laboratory analysis were used to determine the exposure level. Then,the comprehensive index method was used for occupational health risk assessment. Results The arsine risk index at the filter press and the phosphorus pentasulfide feeding port was 4,which was at a high-risk level. The risk index of yellow phosphorus in the phosphorus melting tank,phosphorus pentoxide in the combustion tower and hydration tower,phosphorus pentoxide,phosphoric acid,phosphorus pentoxide,hydrogen sulfide,arsenic and their compounds at the filter press and the phosphorus pentoxide feeding port was 3,which was at a medium risk level. The hydrogen sulfide risk index of the degassing tank and the tail gas absorption tower was 2,which was at a low-risk level. Conclusion The comprehensive index method can comprehensively understand the distribution and exposure level of occupational disease hazard factors in enterprises,accurately assess the occupational health risk level of enterprises,and propose reasonable and effective occupational disease hazard control measures for enterprises,thereby reducing the occupational hazard risks of enterprises.

Key words: Comprehensive index method, Phosphoric acid enterprise, Chemical harmful factors, Occupational health, Risk assessment, Fangchenggang City

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