• Title/Summary/Keyword: Persistent Organic Pollutants

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Concentration Variations of Persistent Organic Pollutants in Gosan, Jeju during the Polluted Period in November 2001 and the Yellow Sand Period in Spring 2002 (2001년 11월 오염시기와 2002년 봄 황사시기 제주도 고산에서의 잔류성 유기오염물질 농도 변화)

  • 김영성;김진영;김연제;문길주;문광주;한진석;김상우;윤순창;권성안
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.5
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    • pp.469-490
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    • 2003
  • Atmospheric concentrations of persistent organic pollutants (POPs) were measured at Gosan, Jeju in November 2001 and spring 2002, each time for two weeks. Primary target pollutants were organochlorine pesticides, coplanar polychlorinated biphenyls (co- PCBs), and dioxin/furans listed in the Stockholm Convention adopted in May 2001. Polycyclic aromatic hydrocarbons (PAHs) were also measured in order to understand the overall characteristics of the POPs distribution as well as PM$_{2.5}$, a potent carrier of POPs. In the latter part of the measurement period of November 2001, almost every pollutant of combustion origin including dioxin/furans went high probably due to influence of emissions in the nearby area. The characteristics of atmospheric environment at Gosan in this period were rather close to urban areas far from those of a background area. A severe dust storm swept for three days at the end of the measurement period of spring 2002. However, changes in pollutant concentrations were relatively small except PM$_{10}$. Nevertheless, increases in particulate PAHs and OCDD (octachlorinated dibenzo-p-dioxins), mostly present in fine particles, were observed. Trends in organochlorine pesticide variations were mixed although possible volatilization of DDT residues from soil was inferred from the measurements of spring 2002.2.2.

Electro-Oxidation in Combination with Biological Processes for Removal of Persistent Pollutants in Wastewater: A Review

  • Navarro-Franco, Javier A.;Garzon-Zuniga, Marco A.;Drogui, Patrick;Buelna, Gerardo;Gortares-Moroyoqui, Pablo;Barragan-Huerta, Blanca E.;Vigueras-Cortes, Juan M.
    • Journal of Electrochemical Science and Technology
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    • v.13 no.1
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    • pp.1-18
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    • 2022
  • Persistent organic pollutants (POPs) and emerging pollutants (EP) are characterized by their difficulty to be removed through biological oxidation processes (BOPs); they persist in the environment and could have adverse effects on the aquatic ecosystem and human health. The electro-oxidation (EO) process has been successfully used as an alternative technique to oxidize many kinds of the aforementioned pollutants in wastewater. However, the EO process has been criticized for its high energy consumption cost and its potential generation of by-products. In order to decrease these drawbacks, its combination with biological oxidation processes has been reported as a solution to reduce costs and to reach high rates of recalcitrant pollutants removal from wastewaters. Thus, the location of EO in the treatment line is an important decision to make, since this decision affects the formation of by-products and biodegradability enhancement. This paper reviews the advantages and disadvantages of EO as a pre and post-treatment in combination with BOPs. A perspective of the EO scale-up is also presented, where hydrodynamics and the relationship of A/V (area of the electrode/working volume of the electrochemical cell) experiments are examined and discussed.

Persistent Organic Pollutants (POPs) Residues in Greenhouse Soil and Strawberry Organochlorine Pesticides (딸기 시설재배지 토양 및 농산물 중 잔류성유기오염물질(POPs)의 잔류량 - 유기염소계 농약)

  • Lim, Sung-Jin;Oh, Young-Tak;Jo, You-Sung;Ro, Jin-Ho;Choi, Geun-Hyoung;Yang, Ji-Yeon;Park, Byung-Jun
    • Korean Journal of Environmental Agriculture
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    • v.35 no.1
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    • pp.6-14
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    • 2016
  • BACKGROUND: Residual organochlorine pesticides (OCPs) are chemical substances that persist in the environment, bioaccumulate through the food web, and pose a risk of causing adverse effect to human health and the environment. They were designated as persistent organic pollutants (POPs) by Stockholm Convention. Greenhouse strawberry is economic crop in agriculture, and its cultivation area and yield has been increased. Therefore, we tried to investigate the POPs residue in greenhouse soil and strawberry.METHODS AND RESULTS: Extraction and clean-up method for the quantitative analysis of OCPs was developed and validated by gas chromatography (GC) with electron capture detector (ECD). The clean-up method was established using the modified quick, easy, cheap, effective, rugged, and safe(QuEChERS) method for OCPs in soil and strawberry. Limit of quantitation (LOQ) and recovery rates of OCPs in greenhouse soil and strawberry were 0.9-6.0 and 0.6-0.9 μg/kg, 74.4-115.6 and 75.6-88.4%, respectively. The precision was reliable sincerelative standard deviation (RSD) percentage (0.5-3.7 and 2.9-5.2%) was below 20, which was the normal percent value. The residue of OCPs in greenhouse soil was analyzed by the developed method, and dieldrin, β-endosulfan and endosulfan sulfate were detected at 1.6-23, 2.2-28.4 and 1.8-118.6 μg/kg, respectively. Those in strawberry were not detected in all samples.CONCLUSION: Dieldrin, β-endosulfan and endosulfan sulfate in a part of investigated greenhouse soil were detected. But those were not detected in investigated greenhouse strawberry. These results showed that the residue in greenhouse soil were lower level than bioaccumulation occurring.

Characteristics of Persistent Organochlorinate Pollutants at Gosan (고산에서 잔류성 유기염소계 오염물질의 농도 특성)

  • 김정아;김용표;김영성
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.291-292
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    • 2003
  • 잔류성 유기오염물질(POPs; Persistent Organic Pollutants)은 환경 내에서 분해가 느려 잔류성이 높고, 생체 지질에 축적되는 독성이 강한 특성이 있다. 따라서 스톡홀름 협약(2001년 5월 23일)에서 12종의 POPs 물질에 대해 국제적 사용금지 및 관리가 결정되었다. POPs는 대부분 반휘발성(semi-volatile) 이어서 대기 중 장거리 이동되어 배출지와 다른 곳에 침적되는 것이 보고되어있다. 이러한 물질들의 대기 중 잔류량과 기체상과 입자상의 분포 특성을 살펴서 환경 내 이동성을 파악하는 것은 인체위해성 수준을 알아내는데 중요한 자료이다. (중략)

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Concentration Variations of Persistent Organic Pollutants in Ambient Air of Gosan, Jeju in November 2001 (2001년 11월 제주도 고산에서의 대기 중 잔류성 유기오염물질 농도 변화)

  • 김영성;김진영;진현철;문길주;김연제;한진석;김영준;김상우;윤순창
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2002.04a
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    • pp.83-84
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    • 2002
  • 우리 사회가 중국으로부터 오염물질 이동을 주목하기 시작한 것은 국지 오염 중심의 아황산가스, 먼지 등 1차 오염이 어느 정도 해결된 1990년대 초반 이후이다. 1992년 환경부 선도기술개발사업으로 산성비 감시 및 예측기술개발이 시작되고 1995년부터 국립환경연구원 주도로 배경농도 지역에서 미세입자 측정이 진행되면서 국내의 장거리 이동대기오염물질 연구는 점차 자리를 잡게 되었다. (중략)

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Characteristics and Status of Toxic Trace Substances in Ambient Air (대기 중 미량독성 유해물질의 특성과 현황)

  • 김영성;김영주;임은정
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2002.04a
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    • pp.133-134
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    • 2002
  • 미량독성 유해물질은 크게 중금속 성분과 잔류성 유기오염물질 (POPs, persistent organic pollutants)로 나눌 수 있다. 아직은 우리 사회의 관심이 직접 주변에서 확인할 수 있는 국내 배출에 머물고 있으나 미량독성 유해물질로 분류되는 많은 물질들이 분해가 어렵고 대기 중 체류시간이 길어 장거리 이동의 가능성이 매우 크다. 실제 오염물질 배출이 거의 없는 북극의 북극곰, 물개, 물고기에서도 미량독성 유해물질 검출이 보고되고 있는데, 다른 지역에서 배출된 독성물질들이 침적과 휘발을 반복하며 이동하는 가운데 기온이 낮은 극지방에 축적됨으로써 나타난 현상이다. (중략)

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Risk analysis of dioxin in human breast milk

  • Choi, Shin-Ai;Han, Jee-Yeun;Park, Jong-Sei
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.160.1-160.1
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    • 2003
  • Persistent organic pollutants (POPs) have spread throughout the global environment to threaten human health and damage ecosystems. with evidence of POPs contamination in wildlife, human blood. and breast milk documented worldwide. Breast milk is an ideal medium for assessing exposures to POPs. POPs enter humans largely as contaminants of dietary animal products, where they sequester in adipose tissue, serum, and breast milk and equilibrate at similar levels on a fat weight basis. (omitted)

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Treatment Technologies for Removal of Polybrominated Diphenyl Ethers (PBDEs) from Wastewater (하·폐수내 브롬화 디페닐 에테르(Polybrominated Diphenyl Ether, PBDEs)의 분포 및 제거기술 동향)

  • Kim, Minhee;Hyun, Seunghun;Lee, Won-Seok
    • Journal of Korean Society on Water Environment
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    • v.33 no.6
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    • pp.754-768
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    • 2017
  • Polybrominated diphenyl ethers (PBDEs) are a group of industrial aromatic organobromine chemicals that have been used since the 1970s as flame retardants in a wide range of consumer products and articles, including plastics, computers, textiles and upholstery. Commercial PBDEs were added to Annex A of the Stockholm Convention as persistent organic pollutants in May 2009. PBDEs are still frequently found in sludge and effluent from wastewater treatment plants, even though commercial PBDEs were prohibited or voluntarily phased out several years ago. Conventional wastewater treatment processes are not designed to effectively remove PBDEs. This indicates that there is an urgent need for new developments and improvements to enhance upon the treatment techniques which are currently available. Several studies have suggested the potential removal and degradation technologies for PBDEs in wastewater. In this study, the concentrations and compositional profiles of PBDE congeners in sludge and effluent are investigated by analyzing the relevant literature data in relation to their usage patterns in commercial products in North America and South Korea. The strengths and weaknesses of the current PBDEs removal techniques (i.e., biodegradation, zero-valent iron, photolysis, sorption, etc.) are discussed critically. In addition, future research direction regarding the treatment and removal of PBDEs from wastewater is also suggested, based on the literature review.

Analytical trend of perfluorinated compounds in environmental and biota samples (환경 및 생체시료 중 과불화 화합물의 분석 동향)

  • Lee, Won-Woong;Chang, Won-Hee;Pyo, Hee-Soo;Kang, Tae-Seok;Hong, Jong-Ki
    • Analytical Science and Technology
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    • v.23 no.4
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    • pp.331-346
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    • 2010
  • Perfluorinated compounds have characteristics of resistance to heat, acidic, basic conditions and also resist water, oil, grease, pollutant. Futhermore they are used by various industrial material, nowadays, they produced in large scale for indutrial and commercial areas. However, they also resist metabolizing and degrading in environmental system (plant, animal, even human body). Moreover, in animal's bodies, PFCs can be accumulated in organ (eg; liver) and lead to liver cell necrosis even oncogenesis. Perfluorinated compounds are newly registered as new persistent organic pollutants (POPs) on Stockholm convention in 2009. Therefore necessity for analytical methodology for determination of PFCs in various environmental samples is even more increased. This study discussed sample preparation and instrumental conditions for the analysis of PFCs in environmental and biota samples.

Identification of Hepatotoxicity Related Genes Induced by Hexachlorobenzne (HCB) in Human Hepatocellular Carcinoma (HepG2) Cells

  • Kim, Youn-Jung;Choi, Han-Saem;Song, Mee;Song, Mi-Kyung;Ryu, Jae-Chun
    • Molecular & Cellular Toxicology
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    • v.5 no.3
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    • pp.179-186
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    • 2009
  • Hexachlorobenzene (HCB) is a bioaccumulative, persistent, and toxic pollutant. HCB is one of the 12 priority of Persistent Organic Pollutants (POPs) intended for global action by the United Nations Environment Program (UNEP) Governing Council. POPs are organic compounds that are resistant to environmental degradation through chemical, biological, and photolytic processes. Some of HCB is ubiquitous in air, water, soil, and biological matrices, as well as in major environmental compartments. HCB has effects on various organs such as thyroid, bone, skin, kidneys and blood cells and especially, revealed strong toxicity to liver. In this study, we identified genes related to hepatotoxiciy induced by HCB in human hepatocellular carcinoma (HepG2) cells using microarray and gene ontology (GO) analysis. Through microarray analysis, we identified 96 up- and 617 down-regulated genes changed by more than 1.5-fold by HCB. And after GO analysis, we determined several key pathways which known as related to hepatotoxicity such as metabolism of xenobiotics by cytochrome P450, complement and coagulation cascades, and tight junction. Thus, our present study suggests that genes expressed by HCB may provide a clue for hepatotoxic mechanism of HCB and gene expression profiling by toxicogenomic analysis also affords promising opportunities to reveal potential new mechanistic markers of toxicity.