http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Risk Assessment of Baby Powder Exposure through Inhalation
Min Chaul Moon,Jung Duck Park,Byung Soon Choi,So Young Park,Dong Won Kim,Yong Hyun Chung,Naomi Hisanaga,Il Je Yu 한국독성학회 2011 Toxicological Research Vol.27 No.3
This study was conducted to assess the exposure risk through inhalation to baby powder for babies and adults under simulated conditions. Baby powder was applied to a baby doll and the amount of baby powder consumed per application was estimated. The airborne exposure to baby powder during application was then evaluated by sampling the airborne baby powder near the breathing zones of both the baby doll and the person applying the powder (the applicator). The average amount of baby powder consumed was 100 ㎎/application, and the average exposure concentration of airborne baby powder for the applicator and baby doll was 0.00527 ㎎/㎥ (range 0.00157~0.01579 ㎎/㎥) and 0.02207 ㎎/㎥ (range 0.00780~0.04173 ㎎/㎥), respectively. When compared with the Occupational Exposure Limit of 2 ㎎/㎥ set by the Korean Ministry of Labor and the Threshold Limit Value (TLV) of 2 ㎎/㎥ set by the ACGIH (American Conference of Governmental Industrial Hygienists), the exposure concentrations were much lower. Next, the exposure to asbestos-containing baby powder was estimated and the exposure risk was assessed based on the lung asbestos contents in normal humans. As a result, the estimated lung asbestos content resulting from exposure to asbestos-containing baby powder was found to be much lower than that of a normal Korean with no asbestos-related occupational history.
Risk Assessment of Baby Powder Exposure through Inhalation
Moon, Min-Chaul,Park, Jung-Duck,Choi, Byung-Soon,Park, So-Young,Kim, Dong-Won,Chung, Yong-Hyun,Hisanaga, Naomi,Yu, Il-Je Korean Society of ToxicologyKorea Environmental Mu 2011 Toxicological Research Vol.28 No.3
This study was conducted to assess the exposure risk through inhalation to baby powder for babies and adults under simulated conditions. Baby powder was applied to a baby doll and the amount of baby powder consumed per application was estimated. The airborne exposure to baby powder during application was then evaluated by sampling the airborne baby powder near the breathing zones of both the baby doll and the person applying the powder (the applicator). The average amount of baby powder consumed was 100 mg/application, and the average exposure concentration of airborne baby powder for the applicator and baby doll was 0.00527 mg/$m^3$ (range 0.00157~0.01579 mg/$m^3$) and 0.02207 mg/$m^3$ (range 0.00780~0.04173 mg/$m^3$), respectively. When compared with the Occupational Exposure Limit of 2 mg/$m^3$ set by the Korean Ministry of Labor and the Threshold Limit Value (TLV) of 2 mg/$m^3$ set by the ACGIH (American Conference of Governmental Industrial Hygienists), the exposure concentrations were much lower. Next, the exposure to asbestos-containing baby powder was estimated and the exposure risk was assessed based on the lung asbestos contents in normal humans. As a result, the estimated lung asbestos content resulting from exposure to asbestos-containing baby powder was found to be much lower than that of a normal Korean with no asbestos-related occupational history.
Challenges and Perspectives of Nanoparticle Exposure Assessment
Ji Hyun Lee,Min Chaul Moon,Joon Yeob Lee,Il Je Yu 한국독성학회 2010 Toxicological Research Vol.26 No.2
Nanoparticle exposure assessment presents a unique challenge in the field of occupational and environmental health. With the commercialization of nanotechnology, exposure usually starts from the workplace and then spreads to environment and consumer exposure. This report discusses the current trends of nanoparticle exposure assessment, including the definition of nanotechnology relevant terms, essential physicochemical properties for nanomaterial characterization, current international activities related nanomaterial safety, and exposure assessment standard development for nanotechnology. Further this report describes challenges of nanoparticle exposure assessment such as background measurement, metrics of nanoparticle exposure assessment and personal sampling.
Challenges and Perspectives of Nanoparticle Exposure Assessment
Lee, Ji-Hyun,Moon, Min-Chaul,Lee, Joon-Yeob,Yu, Il-Je Korean Society of ToxicologyKorea Environmental Mu 2010 Toxicological Research Vol.27 No.2
Nanoparticle exposure assessment presents a unique challenge in the field of occupational and environmental health. With the commercialization of nanotechnology, exposure usually starts from the workplace and then spreads to environment and consumer exposure. This report discusses the current trends of nanoparticle exposure assessment, including the definition of nanotechnology relevant terms, essential physicochemical properties for nanomaterial characterization, current international activities related nanomaterial safety, and exposure assessment standard development for nanotechnology. Further this report describes challenges of nanoparticle exposure assessment such as background measurement, metrics of nanoparticle exposure assessment and personal sampling.
Kim, Eun Jin,Yeo, Gwu-Dong,Pai, Chaul-Min,Kang, Inn-Kyu Wiley Subscription Services, Inc., A Wiley Company 2009 Journal of Biomedical Materials Research Part B Vol. No.
<P>Blood transfusion-related adverse reactions have been reported to be caused by leukocytes in blood products. It is now generally accepted that it would be highly desirable to reduce leukocytes level as low as possible. In this study, melt-blown poly(butylene terephthalate) nonwoven (PBT-NW) was treated with a hydroxyapatite (HA) surface-modification method for removal of leukocytes from blood components. Acrylic acid was graft-polymerized onto the surface of the PBT-NW after oxygen plasma glow discharge treatment. The PBT-NW surface was covered with a thin layer of HA produced by immersing the polymer surface in an aqueous solution containing high concentrations of PO<SUB>4</SUB><SUP>3−</SUP> and Ca<SUP>2+</SUP> after graft-polymerization of acrylic acid, which provided the nucleus for HA crystallization. The surface was characterized using water contact angles, attenuated total reflection-Fourier transform infrared (ATR-FT-IR), and electron spectroscopy for chemical analysis. When filtration was performed with a unit of red blood cell concentrates, HA-deposited PBT-NW (PBT-HA) removed 98.5% of the leukocytes and recovered 99.5% of the erythrocytes, suggesting that HA-deposited PBT-NW is a very promising blood filter for selective removal of leukocytes. © 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2009</P>