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Objective@#To analysis pathogenic conditions and pathogenic characteristics of organic fluorosis caused by applying of anti-fingerprint coating material on touch screen glass of the mobile phone.@*Methods@#To collect clinical data and analyze the causes and pathogenic characteristics of poisoning through surveying occupational health, detecting occupational hazards in the workplace, collecting clinical data and diagnosing of occupational diseases. 6 employees in workshop 1 of packaging were as the organic fluorine exdposed group, and 16 employees in other workshops were as the non-exposed group.@*Results@#Organic fluorine chemicals (perfluoro-1, 3-dimethylcyclohexane, hexadecafluoroheptane, perfluoro-hexane, perfluoromethy lopentane, perfluoro-2-methyl-2-pentene, etc.) can be volatilized by spraying and baking of anti-fingerprint nano-coating material on touch screen. The relative percentage of volatile components in air is 85.65%. Four cases of acute poisoning were caused by organic fluorosis deposited in a dustless air conditioning workshop with poor ventilation.The clinical manifestations of the patients were acute bronchitis, pulmonary edema and/or myocarditis. The average concentration of urine fluorine in the organic fluorine exposed group was 13.7± 4.4 mmol/mol creatinine, which was 4-5 times higher than that of other non-organic fluorine exposed groups. The difference of urine fluorine level between the organic fluorine exposed group and non exposed group was statistically significant (P<0.01) . The main indicators were abnormal for the blood oxygen saturation of finger pulse under suction air, leukocytes, neutrophils, monocytes, hypersensitivec-reactive protein, procalcitonin, l-lactate dehydrogenase, forebrain diuretic natriuretic peptide, hypersensitive troponin T in the four cases. One case was myocardial ischemia, four cases had bilateral lung symmetrically exudative lesions, one case was accompanied by a small amount of pleural pericardial effusion.@*Conclusion@#Acute organofluorine poisoning can caused by the applying of the fingerprint nano-coating material on touch screen of the mobile phone. Attention should be paid to occupational poisoning caused by the applying of the small molecular perfluoroalkanes (olefins) in new industries, new processes and new materials.
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Objective@#To investigate whether the identification of acrylonitrile, an occupational hazard factor for the industry of injection molding and plastic products, reported in literature is reasonable, and to put forward some recommendations.@*Methods@#Professional articles published from 1990 to 2016 were searched, and an analysis was performed for the data on the determination of acrylonitrile in the industry of injection molding and plastic products from 2003 to 2016 in Longhua Center for Disease Control and Prevention of Shenzhen.@*Results@#According to the literature, the detection rate of acrylonitrile was 10.7%, and the detection results did not exceed the limit.@*Conclusion@#At present, acrylonitrile may not be used as a routine test item for the industry of injection molding and plastic products, in order to save manpower and material resources.
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<p><b>OBJECTIVE</b>To analyze the literature on power frequency electric field testing data and to propose views and suggestions for current testing.</p><p><b>METHODS</b>The literature on power frequency electric field testing data published in the previous years was searched to identify 306 articles involving 193 valid testing data. Mann-Whitney test and Wilcoxon W test were used for analyzing the testing data.</p><p><b>RESULTS</b>The classification of data was carried out according to one quarter of occupational exposure limit (1.25 kV/m), one half of the exposure limit (2.5 kV/m), and the exposure limit (5 kV/m). The structure of testing data showed a significant difference between the non-power facility group and the power facility group (P<0.05).</p><p><b>CONCLUSION</b>As occupational hazard factors, the radiation exposure from power frequency electric field is extensive. However, the power frequency electric field testing data in actual workplaces except high-voltage power facilities are far less than the occupational exposure limit with little harmfulness. There is a phenomenon of excessive testing at present.</p>
Subject(s)
Humans , Electricity , Electromagnetic Fields , Occupational Exposure , Reference Standards , WorkplaceABSTRACT
<p><b>OBJECTIVE</b>To study the economic burden caused by occupational chronic n-hexane poisoning.</p><p><b>METHODS</b>Information about the cost of treatment, compensation, board, wage, diagnosis, escorts, transportation and the days off work were collected in a 34 cases of occupational chronic n-hexane poisoning accident to estimate the economic burden.</p><p><b>RESULTS</b>There were 4 mild, 19 moderate, 11 severe in the 34 cases and the total cost was 6 084 809 yuan. The hospitalization days was respectively (204.0 ± 3.7) d, (226.6 ± 78.3) d and (417.6 ± 94.1) d, averaging (285.8 ± 96.3) d. The treatment cost was respectively 62 525.8, 69 409.7 and 128 155.6 yuan. The compensation was respectively 20 000.0, 20 052.6 and 30 290.9 yuan. The wage was respectively 23 460.0, 26 062.6 and 47 644.0 yuan. The board was respectively 17 566.5, 19 499.8 and 36 230.1 yuan. The days of work was respectively (176.8 ± 3.2) d, (196.4 ± 67.9) d and (361.4 ± 81.6) d, averaging (247.7 ± 83.5). The lost productivity was respectively 1 809 724.8, 2 010 350.4 and 3 699 290.4 yuan.</p><p><b>CONCLUSION</b>The economic burden of occupational chronic n-hexane poisoning was so heavy that prevention measures should be strengthened.</p>