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RISS 인기검색어
- 검색키워드
- 저자 : Patrick N. Breysse (검색결과 3 건)
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조성준,신동천,정용,이덕희,Patrick N. Breysse 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.2
Volatile organic compounds (VOCs) are an important public health issue in Korea and many important questions remain to be addressed with respect to assessing exposure to these compounds. Because they are ubiquitous and highly volatile, special techniques must be applied in their analytic determination. Valid personal exposure assessment methods are needed to evaluate exposure frequency, duration and intensity, as well as their relationship to personal exposure characteristics. Biological monitoring is also important since it may contribute significantly in risk assessment by allowing the estimation of effective absorbed doses. This study was onducted to establish the environmental measurement, personal dosimetry and biological monitoring methods for VOCs. These methods are needed to compare blood, urinary and exhalation breath VOC levels and to provide tools for risk assessment of VOC exposure. Passive monitors (badge type) and a active samplers (trap) for the VOCs collection were used for air sampling. Methods development included determining the minimum detectable amounts of VOCs in each media, as well as evaluating collection methods and developing analytical procedures. Method reliability was assessed by determining breakthrough volumes and comparing results between laboratories and with other methods. A total capacity of trap used in this study was 60ℓ. Although variable by compound, the average breakthrough was 20%. Also, there was no loss of compounds in trap even if keep for 45 day in -70℃. The recovery of active and passive methods was 69%~126% and method detection limit was 0.24㎍/trap and 0.07㎍/badge. There was no statistical difference (P>0.05) between active and passive methods.
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조성준,신동천,정용,이덕회,Patrick N. Breysse 환경독성보건학회 2002 환경독성보건학회지 Vol.17 No.2
Volatile organic compounds (VOCs) are an important public health issue in Korea and many important questions remain to be addressed with respect to assessing exposure to these compounds. Because they are ubiquitous and highly volatile, special techniques must be applied in their analytic determination.<br/> Valid personal exposure assessment methods are needed to evaluate exposure frequency, duration and intensity, as well as their relationship to personal exposure characteristics. Biological monitoring is also important since it may contribute significantly in risk assessment by allowing the estimation of effective absorbed doses.<br/> This study was onducted to establish the environmental measurement, personal dosimetry and biological monitoring methods for VOCs. These methods are needed to compare blood, urinary and exhalation breath VOC levels and to provide tools for risk assessment of VOC exposure.<br/> Passive monitors (badge type) and a active samplers (trap) for the VOCs collection were used for air sampling. Methods development included determining the minimum detectable amounts of VOCs in each media, as well as evaluating collection methods and developing analytical procedures. Method reliability was assessed by determining breakthrough volumes and comparing results between laboratories and with other methods.<br/> A total capacity of trap used in this study was 60 l. Although variable by compound, the average breakthrough was 20%. Also, there was no loss of compounds in trap even if keep for 45 day in -70℃. The recovery of active and passive methods was 69%~126% and method detection limit was 0.24 μg/trap and 0.07 μg/badge. There was no statistical difference (P>0.05) between active and passive methods.
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대기 중 휘발성유기오염물질의 환경, 개인 및 인체 노출의 상관성 연구
조성준,신동천,정용,Patrick N. Breysse 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.3
Volatilc organic compounds (VOCs) are an important public health problem throughout the world. Many important questions remain to be addressed in assessing exposure to these compounds. Because they are ubiquitous and highly volatile, special techniques must be applied in the analytical determination of VOCs. Personal exposure measurements are needed to evaluate the relationship between microenvironmental concentrations and actual exposures. It is also important to investigate exposure frequency, duration, and intensity, as well as personal exposure characteristics. In addition to air monitoring, biological monitoring may contribute significantly to risk assessment by allowing estimation of absorbed doses, rather than just the external exposure concentrations, which are evaluated by environmental and personal monitoring. This study was conducted to establish the analytic procedure of VOCs in air, blood, urine and exhaled breath and to evaluate the relationships among these environmental media. The subjects of this study were selected because they are occupationally exposed to high levels of VOCs. Environmental, personal, blood, urine and exhalation samples were collected. Purge & trap, thermal desorber, gas chromatography and mass selective detector were used to analyze the collected samples. Analytical procedures were validated with the "break through test", "recovery test for storage and transportation", "method detection limit test" and "inter-laboratory QA/QC study". Assessment of halogenated compounds indicted that they were significantly correlated to each other (p value < 0.01). In a similar manner, aromatic compounds were also correlated, except in urine sample. Linear regression was used to evaluate the relationships between personal exposures and environmental concentrations. These relationships for aromatic and halogenated are as follows: Halogens_(personal)=3.875+0.068Halogens_(evironmet)(R²=.930) Aromaties_(personal)=34217.757-31.266Aromatics_(evironmet)(R²=.821) Multiple regression was used to evaluate the relationship between exposures and various exposure determinants including, gender, duration of employment, and smoking history. The results of the regression modeling for halogens in blood and aromatics in urine are as follows: Halogens_(blood)=8.181+0.246Halogens_(personal)+3.975Gender(R²=.925), Aromatics_(urine)=249.565+0.135Aromatics_(personal)-5.651D.S(R²=.735), In conclusion, we have established analytic procedures for VOC measurement in biological and environmental samples and have presented data demonstrating relationships between VOCs levels in biological media and environmental samples.
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