• Title, Summary, Keyword: PAHs

Search Result 643, Processing Time 0.041 seconds

Seasonal Variation of Atmospheric Polycyclic Aromatic Hydrocarbons (PAHs) on Anmyeon Island (안면도에서 대기 중 가스상 PAHs의 계절적 변동)

  • An, Joon-Geon;Yim, Un-Hyuk;Shim, Won-Joon;Kim, Gi-Beum;Kim, Seung-Kyu;Yi, Hi-Il
    • Ocean and Polar Research
    • /
    • v.31 no.2
    • /
    • pp.189-198
    • /
    • 2009
  • Passive air samplers with polyurethane foam (PUF) disks were employed to determine seasonal gas phase variation of polycyclic aromatic hydrocarbons (PAHs) in ambient air on Anmyeon island from March 2007 to January 2008. Sum of 13 PAHs ranged between $3.5\;ng/m^3$ and $27.6\;ng/m^3$. Total PAHs during the heating season was 6.2 times higher than non-heating season. The dominant PAHs components during sampling periods were low and middle molecular weight PAHs including phenanthrene, fluoranthene, pyrene and chrysene. Gas exchange fluxes of PAHs across the air-water interface of the Yellow Sea were calculated using a modified two-film exchange model. PAHs fluxes ranged from $196\;ng/m^2/d$ net volatilization during summer to $3830\;ng/m^2/d$ net absorption during winter. Passive air sampler provides a convenient and cost-effective tool for measuring averaged gas phase PAHs, which was successfully used for calculation of gas exchange flux of PAHs in the Yellow Sea.

Analytical method of polycyclic aromatic hydrocarbons (PAHs) in oil contaminated soils (유류 오염토양 중 다환방향족탄화수소류(PAHs) 분석방법 고찰)

  • Yoon, Jeong Ki;Park, Jin Soo;Shin, Sun Kyoung;Kim, Tae Seung
    • Analytical Science and Technology
    • /
    • v.21 no.4
    • /
    • pp.296-303
    • /
    • 2008
  • This study was performed to establish an analytical method of PAHs in oil contaminated soil of these methods by evaluating the PAHs test methods from US EPA and ISO etc. The application to domestic contaminated soil leads to a conclusion that alumina column is a more effective clean-up procedure for oil contaminated soil rather than the others. It is proposed with the new analytical method of 12 PAHs except for more volatile compounds (naphthalene, acenaphthylene, acenaphthene, fluorene). The recovery of PAHs in this method ranged 67~107%. The oil contaminated soil samples were analyzed using GC/MSD. The concentration of PAHs ranged $78.68{\sim}275.57{\mu}g/kg$. The predominated compounds were fluoranthene, pyrene and chrysene attributing about 70% of total concentration. The level of Benzo[a]pyrene ranged $1.76{\sim}24.65{\mu}g/kg$.

Dietary Intake and Potential Health Risk of Polycyclic Aromatic Hydrocarbons (PAHs) via Various Marine Organisms in Korea

  • Moon Hyo-Bang;Lee Su-Jeong;Park Jong-Soo
    • Fisheries and aquatic sciences
    • /
    • v.7 no.3
    • /
    • pp.141-147
    • /
    • 2004
  • Sixteen polycyclic aromatic hydrocarbons (PAHs) were analyzed in seventy marine organisms (40 species) from the Korean coast. PAHs were present in all the organisms. The level of total PAHs in the organisms varied from 0.45 to 224 ng/g dry weight and the carcinogenic PAHs varied from 0.05 to 49.8 ng/g dry weight. The PAHs residues according to the marine organisms showed a highest content in bivalve species, and followed by crustaceans, cephalopods, fish and gastropods. Human dietary intake of total PAHs through marine organism in Korea was estimated to be 4.12 ng/kg body weight/day and 0.67 ng/kg body weight/day for carcinogenic PAHs. The relative contributions of individual species to the total dietary intake of PAHs were in the order of bivalves $(53.4{\%})$, fish $(21.9{\%})$, crustaceans $(15.3{\%})$, cephalopods $(8.8{\%})$ and gastropods $(0.6{\%})$. Daily dietary intake of $PAH_{TEQ}$ expressed as a TEQ value was estimated to be 0.13 pg TEQ/kg body weight/day, which did not exceed a tolerable daily intake (TDI) proposed by the KFDA and the WHO as well as the UK toxicity committee. Lifetime cancer risk due to ingestion of marine species by the Korean adult was evaluated using the equation estimating exposure of food ingestion. Although approximately $23{\%}$ of cumulative frequency of the sampled marine species exceeded the cancer risk guideline, lifetime cancer risk associated with marine organism consumption was negligible. Results indicate that dietary intake of PAHs through the consumption of the Korean marine organisms seems to be safe for human ingestion with negligible cancer risk.

The Relationship between Urinary 8-hydroxydeoxyguanosine and Polycyclic Aromatic Hydrocarbons Exposure in Working Environment

  • Lee Jong-Seong;Kim Eun-A;Lee Yong-Hag;Moon Deog-Hwan;Kim Kwang-Jong
    • Biomedical Science Letters
    • /
    • v.11 no.2
    • /
    • pp.143-152
    • /
    • 2005
  • To investigate the exposure effect of polycyclic aromatic hydrocarbons (PAHs), we analyzed the relationship between urinary 8-hydroxydeoxyguanosine (8-OHdG) concentration and PAHs exposure. The study population contained 44 workers in steel-pipe coating and paint manufacture industries. We measured airborne total PAHs as an external dose, urinary 1-hydroxypyrene (1-OHP) as an internal dose of PAHs exposure, and urinary 8-OHdG as an effective dose of oxidative DNA damage. There was significant correlation between the urinary concentration of l-OHP and the environmental concentration of PAHs, pyrene, urinary cotinine, AST, and GGT. The mean of urinary 8-OHdG was $17.07\pm1.706{\mu}g/g$ creatinine in workers exposed to airborne PAHs. There was significant correlation between the urinary concentration of 8-0HdG and the airborne concentration of PAHs. From the results of stepwise multiple regression analysis about 8-OHdG, significant independents was total PAHs. In this study, there were significant correlation between the urinary concentration of 8-OHdG and the airborne concentration of PAHs. The urinary 1-OHP was effective index as a biomarker of airborne PAHs in workplace. But it was influenced by non-occupational PAHs source, smoking and biomarkers of liver function test.

  • PDF

Polycyclic Aromatic Hydrocarbons (PAHs) and their Bioaccessibility in Meat: a Tool for Assessing Human Cancer Risk

  • Hamidi, Elliyana Nadia;Hajeb, Parvaneh;Selamat, Jinap;Razis, Ahmad Faizal Abdull
    • Asian Pacific Journal of Cancer Prevention
    • /
    • v.17 no.1
    • /
    • pp.15-23
    • /
    • 2016
  • Polycyclic aromatic hydrocarbons (PAHs) are primarily formed as a result of thermal treatment of food, especially barbecuing or grilling. Contamination by PAHs is due to generation by direct pyrolysis of food nutrients and deposition from smoke produced through incomplete combustion of thermal agents. PAHs are ubiquitous compounds, well-known to be carcinogenic, which can reach the food in different ways. As an important human exposure pathway of contaminants, dietary intake of PAHs is of increasing concern for assessing cancer risk in the human body. In addition, the risks associated with consumption of barbecued meat may increase if consumers use cooking practices that enhance the concentrations of contaminants and their bioaccessibility. Since total PAHs always overestimate the actual amount that is available for absorption by the body, bioaccessibility of PAHs is to be preferred. Bioaccessibility of PAHs in food is the fraction of PAHs mobilized from food matrices during gastrointestinal digestion. An in vitro human digestion model was chosen for assessing the bioaccessibility of PAHs in food as it offers a simple, rapid, low cost alternative to human and animal studies; providing insights which may not be achievable in in vivo studies. Thus, this review aimed not only to provide an overview of general aspects of PAHs such as the formation, carcinogenicity, sources, occurrence, and factors affecting PAH concentrations, but also to enhance understanding of bioaccessibility assessment using an in vitro digestion model.

Simultaneous Determination of Polycyclic Aromatic Hydrocarbons by Near Infrared Spectroscopy using a Partial Least Squares Regression

  • Nam, Jae-Jak;Lee, Sang-Hak;Park, Ju-Eun
    • Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
    • /
    • /
    • pp.1276-1276
    • /
    • 2001
  • Polycyclic aromatic hydrocarbons(PAHs) are widely distributed in the environment and are often implicated as potential carcinogens. The chromatographic methods of detection and quantitative determination of PAHs in environmental samples are costly, time consuming, and do not account for all kinds of PAHs. This work describes a quantitative spectroscopic method for the analysis of mixtures of eight PAHs using multivariate calibration models for Fourier transform near infrared(FT-NIR) spectral data. The NIR spectra of mixtures of PAHs (anthracene, pyrene, 1,2-benzanthracene, perylene, chrysene, benzo(a)pyrene, 1-methylanthracene and benzo(ghi)perylene) were measured in the wavelength range from 1100 nm to 2500 nm. The spectral data were processed using a partial least squares regression. We have studied the spectral characteristics of NIR spectra of mixtures of PAHs. It was possible to determine each PAM used in this study at the environmental level(mg L-1) in the laboratory samples. Further development may lead to the rapid determination of more PAHs in typical environmental samples.

  • PDF

PAHs Accumulation in Various Marine Organisms by the Marine Pollution after Oil Spill Accidents (해상 유류 유출 사고 후, 유류 해양 오염에 따른 주요 해산 어.패류내 PAHs 축적)

  • 황인영;박정류;박관하;김정상;정홍배;배철한
    • Environmental health and toxicology
    • /
    • v.16 no.2
    • /
    • pp.57-66
    • /
    • 2001
  • Marine organisms such as fish (Sebastes schlegeli) and mussels were cultured in sea water tanks placed at Dukpo area which was contaminated by the two oil spill accidents. Results showed that PAHs concentrations in flesh tissue were higher than in fish fiver. This was explained by the cytochrome P45O 1A induction in fish limier after PAHs exposure. Other studies showed that higher PAHs levels were detected in mussels cultures in oil contaminated area than in control site. From these results, we concluded that Dukpo area is still polluted by oil including PAHs and it takes a long time to recover of oil contamination after the oil spill accidents.

  • PDF

Characteristics of Polycyclic Aromatic Hydrocarbons in Ambient Air in Jeonju between July and November in 2002 (2002년 6월부터 11월까지 전주지역 대기 중 다환방향족 탄화수소의 특성)

  • Kim Hyoung-Seop;Ghim Young-Sung;Kim Jong-Guk
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.22 no.4
    • /
    • pp.499-508
    • /
    • 2006
  • Atmospheric concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured at the Chonbuk National University located in Jeonju, four times between June and November 2002, each time for five days. Twenty-four compounds including five alkyl PAHs and byphenyl were analyzed. Average total concentration of 24 PAHs was 85 $\pm$ 15 ng/$m^3$ and about 94% of PAHs existed in the gas phase. On an average, naphthalene accounted for about 30% of the total PAHs concentration. The gas/particle partitioning was not much varied during the measurement period. High molecular weight PAHs with five and six rings were primarily associated with fine particles less than 1 $\mu$m. Lower molecular weight PAHs were evenly distributed in fine and coarse particles so that their distribution was similar to that of TSP.

Numerical Simulation of PAHs in Masan Bay using STELLA program (STELLA프로그램을 이용한 마산만 PAHs 거동 시뮬레이션)

  • Heo, Min-Ji;Jang, Se-Joo;You, Young-Seok;Roh, Kyong-Joon;Cho, Hyeon-Seo;Kim, Dong-Myung
    • Proceedings of KOSOMES biannual meeting
    • /
    • /
    • pp.131-132
    • /
    • 2009
  • 마산만을 대상으로 하여 연안환경 중의 PAHs의 거동을 STELLA프로그램을 이용하여 파악하였다. 상태변수로는 용존 PAHs, 부유입자물질 중의 PAHs, 식물플랑크톤 내의 PAHs, 저질중의 PAHs 둥을 고려하였다. 화학적, 생물학적 과정으로는 용존 PAHs에서 광분해, 부유입자물질에서 흡착과 탈착, 식물플랑크톤에 의한 흡수 및 분비와 퇴적물로의 침강을 고려하였다. STELLA 프로그램을 이용하여 모델을 재현하였으며, 민감도 분석을 시행하였다. 또한 하천 및 대기로부터의 유입부하변동에 따른 현상황을 시나리오를 구성하여 시행하였다.

  • PDF

Determination of Polycyclic Aromatic Hydrocarbons (PAHs) in Atmospheric Samples by Synchronous 2nd Derivate Spectrofluorimetry (동시형광 분광광도법에 의한 대기 시료 중의 다환방향족 탄화수소(PAHs)의 분석)

  • 유광식;정선이;정지영
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.20 no.1
    • /
    • pp.129-138
    • /
    • 2004
  • Determination of some PAHs in ambient air at Ulsan have been carried out by collection of the components into n-hexane followed by synchronous spectrofluorimetric technique. 10 PAHs, such as acenaphthene (Ace), anthracene (Anth), benz[a]anthracene (BaA), benzo[b]fluoranthene (BbFt), benzo[k]fluoranthene (BkFt) benzo[a]pyrene (BaP), chrysene (Chry), phenanthrene (Phen), fluoranthene (Ft), perlyrene (Per), and pyrene (Pyr) in air samples were able to determine separately by synchronous spectrofluorimetry. Calibration curves for those components were linear for the concentration range of 0.2∼166ppb PAHs with the correlation factor of 0.9985∼0.9999. The predominant contribution was phenanthrene which was included 36.9∼85.1% to the overall level of the 10 PAHs in some areas. Also benzo[a]pyrene which was known to carcinogenicity was detected from 6.4 to 55.8ng/㎥, benzo[a]anthracene of some areas was contained from 21.9∼153ng/㎥.