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KMID : 0895420140240020152
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Journal of Korean Society of Occupational and Enviromental Hygiene
2014 Volume.24 No. 2 p.152 ~ p.159
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trans, trans-Muconic acid, Hippuric acid에 관한 연구A Study on Urinary Trans, Trans-Muconic acid, Hippuric acid of gas station worker according to the use of gasoline vapor recovery system
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Choi Jae-Jun
Won Jong-Uk
Kim Chi-Nyon
Roh Jae-Hoon
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Abstract
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Objectives: This study aims to investigate the excretion aspect of urinary t, t-MA and hippuric acid by measuring concentrations of urinary metabolites according to the use of gasoline vapor recovery system.
Materials:In order to analyze urinary metabolites, samples from the 23 gas station workers ten gas stations in the Seoul and Gyeonggi Province area were collected once daily after work. In addition, a survey was conducted on work factors and lifestyle habits as factors affecting the concentration of urinary metabolites.
Results: The average concentrations of t, t-MA and hippuric acid after work were 0.124±0.177 mg/g creatinine and 0.557±0.251 g/g creatinine among workers at gas stations where gasoline vapor recovery systems were installed. The average concentrations of t, t-MA and hippuric acid were 0.160±0.113 mg/g creatinine and 0.682±0.619 g/g creatinine among workes at gas stations where gasoline vapor recovery systems were not installed. Average concentrations were higher at gas stations where a gasoline vapor recovery system was not installed, but the differences were not statistically significant differences. Urinary t, t-MA and hippuric acid average concentrations of smokers and non-smokers were higher in the gas stations where gasoline a vapor recovery system was not installed. T, t-MA as a factor evaluation affecting the concentration of urinary metabolites was not statistically significant in all factors, while hippuric acid was statistically significant only for age(p=0.024).
Conclusions: The average concentrations of urinary t, t-MA and hippuric acid were higher in gas stations where gasoline vapor recovery systems were not installed compared to gas stations where such a system was installed. There needs to be an assessment of biological monitoring according to refueling activity considering skin absorption of benzene and toluene and presence of gasoline vapor recovery system.
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KEYWORD
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Benzene, Gasoline vapor recovery system, Gas station, Hippuric acid, t, t-MA, Toluene
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