• 한국독성학회:학술대회논문집
• /
• 한국독성학회 2003년도 추계학술대회
• /
• pp.106-106
• /
• 2003

Many polycyclic aromatic hydrocarbons (PAH) are acutely toxic to fish and other aquatic organisms in the presence of environmentally realistic intensities of solar ultraviolet radiation (SUVR). The phototoxicity of polycyclic aromatic hydrocarbons (PAHs) occurs through photodynamic activation of PAH compounds. Oxygen molecules react as quenchers with excited triplet states of PAHs producing reactive oxygen species (ROS).(omitted)

• 한국대기환경학회:학술대회논문집
• /
• 한국대기환경학회 2000년도 춘계학술대회 논문집
• /
• pp.94-96
• /
• 2000

Polycyclic aromatic hydrocarbons(다환방향족 탄화수소류: 이하 PAHs)는 여러 가지 오염원에서 배출되어 환경계에서 이동하는 중요한 화합물질 그룹중의 하나이다. 대부분의 PAHs는 발암물질이라고 의심이 가는 물질로써 여러 가지 형태의 배열로 연결되어 있는 두개 혹은 그 이상의 방향족 고리로 구성되어 있다 PAHs의 대기에서의 침적은 가스상과 입자상 물질의 비나 눈에 의한 제거, 입자상 물질의 건식침적 및 가스상 물질의 대기-수체간 교환에 의하여 이루어진다. (중략)

• Journal of Microbiology and Biotechnology
• /
• 제12권1호
• /
• pp.77-83
• /
• 2002

A bacterial consortium capable of utilizing a variety of polycyclic aromatic hydrocarbons has been isolated from a former manufactured gas plant site. The consortium consisted of four members including Arthrobacter sp., Burkholderia sp., Ochrobacterium sp., and Alcaligenes sp., which were identified and characterized by the patterns of fatty acid methyl esters (FAME analysis) and carbon source utilization (BIOLOG system). With the individual members, the biodegradation characteristics of aromatic hydrocarbons depending on different growth substrates were determined. FAME analyses demonstrated that microbial fatty acid profiles changed to significant extents in response to different carbon sources, and hence, such shift profiles may be informative to characterize the biodegradation potential of a bacterium or microbial community.

• 한국지하수토양환경학회:학술대회논문집
• /
• 한국지하수토양환경학회 2001년도 추계학술발표회
• /
• pp.103-106
• /
• 2001

A remediation technology consisting of biodegradation and a modified Fenton reaction was developed to degrade mixtures of polycyclic aromatic hydrocarbons (PAHs) at a former manufactured gas plant (MGP) site. The original Fenton reaction (i.e., $H_2O$$_2$ + Fe$^{2+}$) was modified to be biocompatible by using ferric ions and chelating agents such as catechol and gallic acid. The modified reaction was effective in degrading PAHs at near neutral pH and thus was compatible with biodegradation. By the combined treatment of the modified Fenton reaction and biodegradation, more than 98% of 2- or 3-ring hydrocarbons and between 70 and 85% of 4- or 5-ring compounds were degraded in the MGP soil, while maintaining its pH about 6.6.

• Bulletin of the Korean Chemical Society
• /
• 제24권2호
• /
• pp.246-248
• /
• 2003

• 한국환경성돌연변이발암원학회:학술대회논문집
• /
• 한국환경성돌연변이발암원학회 2004년도 춘계학술대회
• /
• pp.79-79
• /
• 2004

• Advances in environmental research
• /
• 제6권3호
• /
• pp.189-202
• /
• 2017

This study examines the concentrations of particulate-phase polycyclic aromatic hydrocarbons (PAHs) and gas-phase PAHs in sidestream cigarette smoke. Sixteen PAHs were determined for four brands of cigarettes. The volume of the experimental room is approximately $66m^3$. The air samples in the room were collected before and after smoking. The median total of particulate-phase and gas-phase PAH concentrations before smoking $3.13ng/m^3$and $48.0ng/m^3$, respectively. The median concentrations of them after smoking were $10.0ng/m^3$ and $79.6ng/m^3$. The median increases in the total of 16 PAH concentrations per cigarette during smoking were 271 ng for the particulate-phase PAHs and 1960 ng for the gas-phase PAHs. According to the relationship between particulate-phase and gas-phase PAHs after smoking, the two- to four-ring gas-phase PAHs and the higher molecular weight particulate-phase PAHs were probably formed from similar precursors. The relationship between the total suspended particulate (TSP) concentration and the increase in the total particulate-phase concentration of the 16 PAHs per cigarette during smoking were significantly positive. The increase in the total gas-phase concentration of the 16 PAHs tended to increase as the TSP concentration increased. This may indicates that decreasing the amount of TSP produced inhibit the production of PAHs during smoking.

• 한국환경보건학회지
• /
• 제38권5호
• /
• pp.386-392
• /
• 2012

Objectives: This study aims to evaluate the blood concentrations and dietary intake for 24-hour food duplicate of low level polycyclic aromatic hydrocarbons (PAHs). Design: The geometric means of the blood concentrations and dietary intake of 16 PAHs in college student candidates were simply compared with instrumental detection. Methods: The concentrations of 16 PAHs in venous blood and 24-hour food duplicates were analyzed with head-space solid phase microextraction (HS-SPME) of gas chromatography-mass spectrometry. Results: Naphthalene, acenaphthylene, pyrene, benz(a)anthracene, chrysene, and acenaphthene among the 16 analyzed PAHs were simultaneously detected both in venous blood and 24-hour food duplicate samples. Conclusion: The main exposure source of the six PAHs is thought to be oral intake from food through low level non-occupational exposure.

• KSBB Journal
• /
• 제15권3호
• /
• pp.262-267
• /
• 2000

The white rot fungi Phanerochaete chrysosporium(IFO 31249) Trametes sp and Pleurotus sp. were studied for their ability to degrade Polycyclic Aromatic Hydrocarbons(PAHs) using anthracene and pyrene as model compounds. The disapperarance anthracene and pyrene of from cultures of wild type strains. P chrysosporium Trametes sp. and Pleurotus sp was observed However the activities of ligninolytic enzymes were not detected in P chrysosporium cultures during degradation while ligninolytic enzymes were detected in both culture of Trametes sp. and Pleurotus sp. Therefore our results showed that PAHs was degraded under ligninolytic as well as nonligninolytic conditions. The results also indicate that lignin peroxidase(LiP) mananese peroxidase(MnP) and laccase are not essential for the biodegradation of PAHs by white rot fungi.

• 한국환경과학회지
• /
• 제12권1호
• /
• pp.87-92
• /
• 2003

Synchronous spectrofluorimetry was carried out for the simultaneous determination of various polycyclic aromatic hydrocarbons(PAHs) in aqueous solution by fluorescence spectrometry have been studied. The optimal wavelength interval(${\triangle}{\lambda}$) for synchronous spectra of acenaphthene, anthracene, benzo[a]anthracene, fluorene and pyrene were investigated in the presence of surfactants. The great enhancement of the fluorescence of these PAHs in Triton X-100 was obtained and optimal wavelength was 50 nm. The calibration curves in synthetic mixture solution of 5 PAHs were linear over the range from $1.0{\times}10^{-8}M$ to $1.0{\tiems}10^{-4}M$. Under the optimal experimental conditions, the detection limits were $4.9{\tiems}10^{-9}M$,\;7.0{\times}10^{-9}M,\;4.7{\tiems}10^{-9}M,\;1.6{\tiems}10^{-9}M$ and $3.2{\tiems}10^{-9}M$ for acenaphthene, anthracene, benzo[a]anthracene, fluorene and pyrene, respectively.