• 제목/요약/키워드: Polychlorinated Biphenyls

검색결과 222건 처리시간 0.024초

폐기물 매립지 토양에서의 PCBs 분석법

  • 이정화;전치완;정영욱
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2005년도 총회 및 춘계학술발표회
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    • pp.199-201
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    • 2005
  • This paper describes a simple procedure for the quantitative analysis of 7 PCBs (polychlorinated biphenyls) in soils on the waste reclaimed land, The procedure involved sample clean up using silicagel column, acetonitrile partition and sulfuric acid procedures. The instrumental technique is applied GC/PDD(gas chromatography/pulsed discharge detector) and GC/ECD(gas chromatography/electron capture detector). Concentration of $sub-{\mu}g/g$ level was attainable with 20g soils on the waste reclaimed land.

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PCBS IN KOREAN ADIPOSE TISSUE AND THEIR ENDOCRINE DISRUPTING EFFECTS

  • Kim, Dae-Hyun;Oh, Seung-Min;Ham, Byung-Woo;Chung, Kyu-Hyuck
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
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    • pp.177-177
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    • 2001
  • Polychlorinated biphenyls(PCBs) are members of the halogenated aromatic group of environmental pollutants. Because of their unique physical and chemical properties, notably their stability and widespread use, PCBs are sidely distributed and transported throughout the global environment. In fact, residues of PCBs have been identified in air, water, aquatic and marine sediments, and human tissue samples.(omitted)

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성스테로이드 호르몬과 고수온 사육이 조피볼락, Sebastes schlegeli의 성분화에 미치는 영향

  • 이치훈;나오수;이영돈
    • 한국어업기술학회:학술대회논문집
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    • 한국어업기술학회 2000년도 춘계수산관련학회 공동학술대회발표요지집
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    • pp.149-150
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    • 2000
  • 어류의 성결정 양상은 크게 유전적 성결정, 생리적 성결정 그리고 환경적 성결정이 알려지고 있다(Yamazaki, 1983; Abucay et al., 1999). 그러나, 최근에 들어 PCB(Polychlorinated Biphenyls), 노닐페놀, 비스페놀 및 다이옥신 등 내분비장애물질(Endocrine Disrupter Chemicals)에 노출되었을 때에도 어류의 성결정에 영향을 미친다는 연구가 보고되고 있다(Gray, et al., 1997). 어류의 생리적 성전환을 유도한 연구는 Yamamto(1953)가 송사리, Oryzias latipes를 대상으로 생리적인 성전환을 유도한 이후 이에 대한 많은 연구가 보고되고 있다. (중략)

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초산부, 경산부 초유 중 PCDDs, PCDFs, dioxin-like PCBs의 축적수준 및 상관성 평가 (Residual Consistency and Interrelationship Estimation of PCDDs, PCDFs, Dioxin-like PCBs in Colostrum of Primipara and Multipara)

  • 위성욱;김기호;조유진;조봉희;박상아;백인천;강성훈;윤조희;민병윤
    • 생명과학회지
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    • 제20권7호
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    • pp.1078-1085
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    • 2010
  • PCDDs, PCDFs, dl-PCBs는 많은 역학 연구에서 독성오염물질이라고 간주되고 있는 생물축적 화학물질이다. 본 연구는 산모 초유 중에 이들 오염물질을 조사 분석하여 산모특성에 따른 축적성 및 상관성을 평가한 것으로, 실험대상 산모는 2007년에 평균연령 31.5세(표준편차=3.6세)의 건강한 초산부와 경산부이다. PCDDs 7개 이성질체, PCDFs 10개 이성질체, non-ortho PCBs 4개와 mono-ortho PCBs 8개 이성질체가 HRGC/HRMS로 분석되었다. 총 WHO-TEQs 평균값은 9.41 pg TEQ/g lipid로 다른 나라 농도에 비하여 낮은 수준이었다. 백분율의 증가와 함께 총 WHO-TEQs의 주요 기여자는 2,3,4,7,8-PeCDF, 1,2,3,7,8-PeCDD 및 3,3‘,4,4’,5-PCB (#126)이며, 총 WHO-TEQs의 60% 이상으로 나타났다. PCDFs 농도와 총 WHO-TEQs는 출산경험에 대해서는 음의 상관관계를 나타내었으며(p<0.05) 산모의 연령은 총 WHO-TEQs에 대해서 양의 상관관계를 나타내었다(p<0.01). 그러나, 임신 전 체질량지수와 어류섭취의 상관관계는 유의성이 없었다. 이들 결과로부터 출산경력과 산모 연령은 모유 내의 PCDD/DFs 및 dl-PCBs의 농도에 영향을 미치는 중요한 인자로 판단된다.

정수처리에서의 다이옥신 제거 및 2, 3, 7, 8-TeCDF 생성 (The Removal of Dioxins and the Formation of 2, 3, 7, 8-TeCDF in Drinking Water Treatment in Japan)

  • 김현구
    • 한국물환경학회지
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    • 제24권6호
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    • pp.758-766
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    • 2008
  • 먹는물 처리 전후 다이옥신류의 동족체 패턴 및 제거율을 평가하기 위해서 42개의 일본 정수처리장에서 2년간 122개의 시료를 채취해 dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) 및 coplanar polychlorinated biphenyls (Co-PCBs)를 분석하였다. 다이옥신류의 평균 농도와 독성등가값 (toxic equivalent, TEQ)은 원수와 처리수에서 각각 60.24 pg/L (0.14 pg-WHO-TEQ/L), 4.15 pg/L (0.016 pg-WHO-TEQ/L)였다. 먹는물의 다이옥신류 기여 농도는 일일섭취량 (tolerable daily intake (TDI), 4 pg-TEQ/kg/day)의 0.016%이었다. 정수처리에 의한 다이옥신류의 평균 TEQ 제거율은 88% 이상이었다. 그러나 112개의 샘플에서 2, 3, 7, 8-TeCDF (tetrachlorodibenzofuran)의 농도는 17% 증가하였다. 따라서, 2, 3, 7, 8-TeCDF의 농도에 영향을 미치는 공정을 파악하기 위하여 고도정수처리 및 일반정수처리에서의 제거율을 조사하였다. 다이옥신 동족체(congener)인 TeCDF와 non-ortho-PCB는 고도처리 및 표준정수처리에서 염소소독처리 후 TEQ 농도가 증가함을 보여, 먹는물 중 2, 3, 7, 8-TeCDF 농도는 염소소독처리에 의해 상승한 것으로 밝혀졌다.

피크패턴법을 이용한 절연유 중 PCBs 분석 (Analysis of the polychlorinated biphenyls in transformer oils using peak matching method)

  • 신선경;김혜진;정다위;전태완;김진경;박석운;정영희;정일록
    • 분석과학
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    • 제18권5호
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    • pp.410-418
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    • 2005
  • PCBs는 뛰어난 물리 화학적, 열적 안전성과 전기 절연성으로 인해 윤활유, 열교환유체, 복사지 등 많은 용도로 사용되어 왔으며, 1930년대에서 1970년대까지 Aroclors, Kaneclors, Clophens, Phenaclors 등과 같은 상업적 PCBs 생산품들이 절연유로 사용되었다. 본 연구에서는 PCBs의 주된 배출원인 변압기 절연유를 채취하여 Aroclor 1242, 1248, 1254, 1260의 표준물질을 사용하여 정성분석을 하였다. 제작년도 및 제작사별로 채취 분석한 결과 절연유는 Aroclor 1242, Aroclor 1254, Aroclor 1260의 단일 제품을 함유하거나 이들이 혼합되어 함유되어 있는 것으로 조사되었다. 또한, 시판되는 스크리닝 키트(20 ppm, 50 ppm)를 이용한 절연유 시료 분석방법의 적용성을 검토하였다.

도심 지역의 다이옥신류 폴리염화비페닐류의 침적 플럭스 (Deposition flux of dioxin-like polychlorinated biphenyls(DLPCBs) in urban environment of Busan)

  • 문효방;이수정;최희구;옥곤
    • 한국환경과학회지
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    • 제13권5호
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    • pp.469-478
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    • 2004
  • Atmospheric bulk (wet and dry) samples were monthly collected in an urban environment (Daeyeon-dong) of Busan over a year, to assess the deposition flux and seasonality of dioxin-like polychlorinated biphenyls (DLPCBs) using stainless steel pots. Deposition fluxes of DLPCBs in bulk samples were determined using high resolution gas chromatography coupled to high resolution mass spectrometry (HRGC/HRMS). Particle deposition fluxes in the urban environment varied from 23 to 98 $mg^2$/year (mean 41 $gm^2$/year). DLPCB deposition fluxes in atmospheric bulk samples ranged from 0.09 to 0.77 ng-$TEQ/m^2$/year (mean 0.35 ng-$TEQ/m^2$/year). Seasonal atmospheric deposition fluxes of DLPCBs were high in winter and low in summer. Atmospheric deposition fluxes of particles and DLPCBs in this study were comparable to or slightly lower values than those of different locations in the world. Monthly DLPCB profiles in deposition bulk samples were similar over a year. Non-ortho PCBs were higher contributions to the total DLPCBs fluxes than mono-ortho PCBs. In particular, PCB 126 had the highest concentrartion (>75%) in all deposition samples, followed by PCB 169 and PCB 156. A highly positive correlation was found among the deposition fluxes of DLPCB species, suggesting the possibility of that the DLPCB contamination originated from one source. The deposition fluxes of DLPCBs were not significantly correlated with temperature and the amount of precipitation even though the summer season with the highest temperature and the largest amount of precipitation showed the lowest DLPCB deposition flux.

저니토중 Polychlorinated Biphenyls(PCBs) 정량에 관한 연구 (A Study on Quantitation of Polychlorinated Biphenyls (PCBs) in Sediments)

  • 신호상;오윤숙
    • 분석과학
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    • 제12권2호
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    • pp.151-158
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    • 1999
  • 국내 4대강 주요 하천 저니토양중 PCB 오염도를 각 congener별로 또는 총량으로서 GC/MS를 사용하여 정량하였다. 그 결과 4대강의 주요 지천중 SS지점 근처의 저니토에서 총 PCBs가 가장높은 $290.87{\mu}g/kg$이었고 OS지점에서도 비교적 높은 $221.11{\mu}g/kg$이었으며 저니중 유기물 함량과 상관관계가 있었다. Congener-specific analysis에 의해 하천수 및 저니토 시료에서 공통적으로 검출된 대표적 congener는 IUPAC No 66, 74, 90, 101, 105, 110, 118, 138, 149, 153, 180, 187였다. 본 연구결과 저니토에서는 tetraCBs 및 pentaCBs가 다른 polyCBs에 비해 비교적 높은 농도로 검출되었다. 이상의 연구결과를 통해 국내의 주요 하천의 저니토중 PCB의 오염정도는 매우 심각한 정도는 아니나 좀더 많은 시료를 분석하는 정말조사가 필요하다.

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Interaction Between Persistent Organic Pollutants and C-reactive Protein in Estimating Insulin Resistance Among Non-diabetic Adults

  • Kim, Ki-Su;Hong, Nam-Soo;Jacobs, David R. Jr.;Lee, Duk-Hee
    • Journal of Preventive Medicine and Public Health
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    • 제45권2호
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    • pp.62-69
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    • 2012
  • Objectives: Chronic inflammation is now thought to play a key pathogenetic role in the associations of obesity with insulin resistance and diabetes. Based on our recent findings on persistent organic pollutants (POPs) including the lack of an association between obesity and either insulin resistance or diabetes prevalence among subjects with very low concentrations of POPs, we hypothesized that POP concentrations may be associated with inflammation and modify the associations between inflammation and insulin resistance in non-diabetic subjects. Methods: Cross-sectional associations among serum POPs, C-reactive protein (CRP), and homeostasis model assessment of insulin resistance (HOMA-IR) were investigated in 748 non-diabetic participants aged ${\geq}20$ years. Nineteen types of POPs in 5 subclasses were selected because the POPs were detectable in ${\geq}60%$ of the participants. Results: Among the five subclasses of POPs, only organochlorine (OC) pesticides showed positive associations with CRP concentrations, while polychlorinated biphenyls (PCBs) showed inverse associations with CRP concentrations. There were statistically significant interactions between CRP and OC pesticides and between CRP and PCBs, in estimating HOMA-IR (P for interaction <0.01 and <0.01, respectively). CRP was not associated with HOMA-IR among subjects with low concentrations of OC pesticides or PCBs, while CRP was strongly associated with HOMA-IR among subjects with high concentrations of these POPs. Conclusions: In the current study, OC pesticides were associated with increased levels of CRP, a marker of inflammation, and both OC pesticides and PCBs may also modify the associations between CRP and insulin resistance.

Ecological and human health risk from polychlorinated biphenyls and organochlorine pesticides in bivalves of Cheonsu Bay, Korea

  • Choi, Jin Young;Yang, Dong Beom;Hong, Gi Hoon;Kim, Kyoungrean;Shin, Kyung-Hoon
    • Environmental Engineering Research
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    • 제21권4호
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    • pp.373-383
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    • 2016
  • Cheonsu Bay, one of the most important in Korea as a coastal fishery is a semi-enclosed bay that is surrounded by large farmlands and industrial areas. This coastal environment has been affected by anthropogenic pollutants, such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The objectives of this study were to investigate the distribution of PCBs and OCPs in sediment, Manila clams, and mussels from Cheonsu Bay; the accumulation pattern of these chemicals in these bivalves in relation to seasonal changes; and the ecological risk from sediments and the risk to the Korean population from the consumption of these bivalves. The levels of ${\Sigma}PCBs$, ${\Sigma}DDT$, and ${\Sigma}HCHs$ were 69.3-109, 40.3-49.3 and 6.25-17.8 ng/g lipid in Manila clams, and 70.6-159, 38.6-102 and 9.00-13.5 ng/g lipid in Mussels. Significant seasonal variations in PCBs and OCPs concentrations were observed in the two bivalves, suggesting that the accumulation of PCBs and OCPs in these species is related to their spawning times. The dietary intake of these two bivalves and the resulting lifetime cancer risk (LCR) and non-cancer risk were calculated for the human population. The consumption of these bivalves seemed to be safe in relation to human health with negligible LCR and non-cancer risk.