| Summary: | 碩士 === 長榮大學 === 職業安全與衛生學系碩士班 === 107 === This study is aimed at five plants in a petrochemical plant in Taiwan, three operating scenarios, and 14 volatile organic compounds (acetone, n-hexane, tetrahydrofuran, benzene, toluene, butyl acetate, p-, m-xylene, o-xylene). 1,2- Dichloroethane, methyl isobutyl ketone, ethylbenzene, acrylonitrile, styrene, 1,3-butadiene), collection and measurement of air exposed samples.
The main research purposes are as follows：(1) Exposure of three operating situations with similar exposure groups (traditional 8-hour operating environment exposure monitoring, traditional 8-hour exposure monitoring in abnormal operating environments, and 15-minute short-term exposure in abnormal operating environments) Comparison; (2) Comparing the working labor between similar exposed groups in different working situations, whether there is significant difference in exposure to volatile organic compounds; (3) Comparing the working labor between the different exposed working groups in different plant sites, Whether there is a significant difference in exposure to volatile organic compounds; (4) Exploring whether 15-minute short-term exposure monitoring can replace the current traditional 8-hour exposure to environmental monitoring.
The study subjects were required to wear a personal air sampling pump and connect two thermal desorption tubes filled with adsorbent. And use a thermal desorber with GC/FID as a volatile organic compound analysis instrument. The sample data collected and analyzed will be described by SPSS ver.17 statistical software using descriptive statistical analysis, one-way variation analysis (one way; Anova, Scheffe, 95% CI, p<0.05) to depict three operations in five sites. Exposure to reality and relevance in context.
In this study, a total of 158 air exposure samples were collected, which were 52 in the traditional 8-hour working environment, 15 minutes in the abnormal operation, 25 in the short-term working environment, and 8 hours in the abnormal operation. The number of samples is 81.
In the analysis of the exposed real data of three similarly exposed populations, it was found that volatile organic compounds such as acetone, methyl isobutyl ketone, ethylbenzene and acrylonitrile were significantly higher in the 15-minute short exposure pattern of the non-state operation. The average value of the entire plant. In the 8-hour exposure mode of the non-linear operation, butyl acetate, 1,2-dichloroethane, styrene, etc. were significantly higher than the whole plant average. Among the average sample values of the conventional 8-hour operation, acetone, n-hexane, benzene, toluene, p-, m-xylene, o-xylene, acrylonitrile and the like were significantly higher than the whole plant average.
In the discussion of the differences in exposure to volatile organic compounds among workers exposed to similar working situations in different working situations, it was found that 19 of the traditional 8-hour working environment groups in each factory were higher than the factory average and abnormal operations. In the 15-minute short-term working environment group, 22 items were higher than the whole plant average, and 22 items in the 8-hour working environment group of the abnormal state operation were higher than the whole plant average. It can be seen that the three ethnic groups have no comparison in quantity. Significantly different, only two items, acetone and methyl isobutyl ketone, were significantly different in the Scheffe test.
In the one-way Anova and Scheffe tests, there were significant differences between the A factory (8 items), the D factory (2 items), and the B factory. It can be seen from the A factory that the 15-hour short-time working environment sampling is significantly different from the 8-hour sampling. The difference between the other factories is not large, probably because the number of samples is small and the measured value is very low. It is not easy to statistically display the difference. However, it can still be seen from the results of the A plant that the 15-minute short-term job test can show the risk of labor exposure compared to the traditional 8-hour work environment test.
Therefore, the instant and convenient 15-minute short-term sampling detection method has the value worthy of promotion and application, so as to reflect the true value of the exposure of the labor workplace in a timely manner, and it is convenient to provide the labor-passive protective equipment routinely, and also provide labor hygiene immediately. The formulation of the security policy.
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