Objective To analyze the characteristics of newly-diagnosed occupational diseases among female workers in Foshan City from 2013 to 2023. MethodsClinical data of newly-diagnosed occupational diseases among female workers in Foshan City from 2013 to 2023 were collected from the "Occupational Disease and Hazardous Detection Information System" subsystem of the "China Disease Prevention and Control Information System", and their distribution characteristics were analyzed using descriptive epidemiology. Results A total of 218 cases of newly-diagnosed occupational diseases among female workers in Foshan City were reported from 2013 to 2023, categorized into seven categories and 17 types. The median age and median length of exposure to occupational hazards among female workers were 45.1 and 7.8 years, respectively. The top three categories of newly-diagnosed cases were occupational diseases of the ear, nose, throat, and oral cavity (90 cases, all related to occupational noise-induced hearing loss), occupational chemical poisoning (61 cases), and occupational pneumoconiosis and other respiratory diseases (51 cases, including 50 cases with occupational pneumoconiosis). The newly-diagnosed cases were concentrated in Nanhai District, Shunde District, and Gaoming District, accounting for 75.2%. The newly-diagnosed cases were found in non-metallic mineral products manufacturing industry, metal products industry, and electrical machinery and equipment manufacturing industry, accounting for 50.9%. Enterprises of newly-diagnosed cases were mainly distributed in private enterprises and foreign-invested enterprises, accounting for 80.3%. The scale of enterprises of newly-diagnosed cases was mainly small- and medium-sized, accounting for 79.4%. Among the 218 cases, there were 21 cluster cases, involving 16 cases of occupational silicosis and five cases of occupational acute n-hexane poisoning, involving six manufacture industries, with 81.3% cases worked in sanitary ceramic products industry. Conclusion Occupational noise-induced deafness should be listed as a key occupational disease for female workers in Foshan City. Attention should be paid to the prevention of occupational diseases among middle-aged female workers in the non-metallic mineral products industry and small and medium-sized enterprises, and the cluster outbreaks of occupational pneumoconiosis.

OBJECTIVE: To improve the standard detection method for acetonitrile in workplace air. METHODS: Acetonitrile in the air of workplace was collected by silica gel, eluted with methanol, separated and determined by gas chromatography with flame ionization detection. RESULTS: After the improvement of the method, the linear range of acetonitrile was 1.57-1 574.00 mg/L, and the correlation coefficient was 0.999 98. The detection limit was 0.29 mg/L and the minimum detection concentration was 0.19 mg/m~(3 )(collected sample volume was 1.5 L). The average desorption efficiency was 93.1%-98.9%. The within-run and between-run precision was 2.6%-3.3% and 1.7%-3.6%, respectively. The samples could be stored at room temperature for at least 10 days. CONCLUSION: The improved method is precisied, accurate and simple to operate, which is suitable for determination of acetonitrile in workplace air.