• Title, Summary, Keyword: dioxins

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Polychlorinated Dibenzo-p-dioxins and Polychlorinated Dibenzofurans in Marine Sediments from Mokpo Coastal Water of Korea

  • Moon, Hyo-Bang;Kang, Sung-Kyung;Seo, Won-Ju;Choi, Min-Kyu;Yu, Jun;Choi, Hee-Gu;Park, Jong-Soo
    • Fisheries and aquatic sciences
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    • v.10 no.2
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    • pp.93-101
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    • 2007
  • Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were determined in marine sediments from Mokpo coastal water of Korea. Total and toxic equivalent (TEQ) concentrations of PCDD/Fs ranged from 19.4 to 175pg/g dry weight and ranged from 0.195 to 2.87 pg WHO-TEQ/g dry weight, respectively. These PCDD/F concentrations were below the safety sediment value (20 pg TEQ/g dry weight) of chronic toxicity. A highly significant correlation between the concentrations of PCDD/Fs and total organic carbon (TOC) in marine sediments was observed. Overall PCDD/F concentrations in the sediments were elevated in rivers and at inner locations close to harbors, indicating that these contaminants derived from local discharges of human activities. PCDD/F concentrations measured in our study were lower than those in several industrialized areas in Korea. Nonparametric multidimensional scaling (MDS) ordination showed that combustion processes from industrial complexes are the major source of PCDD/Fs in Mokpo coastal water.

Determination of PCDD/F in Working Clothes of a Municipal Waste Incineration (생활폐기물 소각장 작업복 샘플의 다이옥신 분석)

  • 박순자;신정화;신정숙;정명희;안윤경
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.2
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    • pp.354-363
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    • 2004
  • PCDD/F (Polychlorinated dibenzo-p-dioxins and dibenzofurans) in both of treated fabric and untreated fabric for working clothes of a municipal waste incineration were determinated. The treated fabric for working clothes was developed for less exposure of PCDD/F in municipal waste incinerations. The total concentrations of PCDD/F in some parts such as surface, middle layer, inside for treated and untreated fabric were investigated. The I-TEQ value of surface was 0.23370ng TEQ/g for treated fabric, 0.15355ng $.$ TEQ/g for non-treated fabric. On the other hand, the value of middle layer was 0.00077ng $.$ TEQ/g, 0.00177ng $.$ TEQ/g, respectively. The surface of the treated fabric containing high levels PCDD/F was caused by absorption of them. Therefore, PCDD/F of the treated fabric in middle layer was less I-TEQ value than that of the untreated fabric. The treated fabric makes effect on preventing PCDD/F from permeating into human body.

A Solid-Phase Extraction Method for Analyzing Trace Amounts of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans in Waste Water

  • Park, Deok-Hie;Youn, Yeu-Young;Choi, Jae-Won;Lim, Young-Hee;Cho, Hye-Sung
    • Mass Spectrometry Letters
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    • v.2 no.1
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    • pp.12-15
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    • 2011
  • The Korean government has regulated emission of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in waste water of manufacturing facilities producing chlorinated compounds since 2009. As this regulation is expected to be reinforced in 2013 to 50 pg I-TEQ/L, a large sample volume is required for the analysis of trace amounts of PCDD/Fs in waste water. Liquid-liquid extraction (LLE) is used to extract PCDD/Fs from aqueous samples; however, its low efficiency makes it inadequate for analyzing large sample volumes. Herein, we present a disk-type solid-phase extraction (SPE) method for the analysis of dioxin at a part per quadrillion level in waste water. This SPE system contains airtight glass covers with a decompression pump, which enables continuous semi-automated extraction. Small (0.5 L) and large (7 L) samples were extracted using LLE and SPE methods, respectively. The method detection limits (MDLs) were 0.001.0.25 and 0.015.4.1 pg I-TEQ/L for the SPE and LLE methods, respectively. The concentrations of detected congeners with both methods were similar. However, the concentrations of several congeners that were not detected with the LLE method were quantified using the SPE method.

Determination of PCDD/Fs in Disposable Diaper for Infant (유아용 일회용 기저귀의 다이옥신 분석)

  • Shin Jeoung Hwa;Ahn Yun Gyong;Seo Jung Ju
    • Journal of the Korean Society of Clothing and Textiles
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    • v.29 no.6
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    • pp.814-824
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    • 2005
  • This study analyzed and standardized the harmful substances of organic compounds(dioxins) in disposable diapers for infant's clothing. Commercial samples obtained from Korea, Japan, America and German were determined by HRGC/HRMS. Experimental Methods were consisted of comparision of extracting solvent, analysis of PCDD/Fs, and analysis of PCDD/Fs of extraction in disposable diaper. The results were as follows. No high TEQ values in TCDD(1), PCDD(0.5) and HxCDD(0.1) were found for commercial disposable diapers from country Korea, Japan, U.S.A and German. In extraction for 6hrs experiments, HpCDD and OCDD were detected in disposable diapers of U1, U2 and G2, respectively. In extraction fur 24hrs experiments, HpCDD, OCDD and OCDF were detected in disposable diapers of J3, U1, U2 and U3. So we need to set standards of measurement for harmful materials contained in textile goods. This will make a safe and comfortable clothing environment for all users, regardless of age.

PCDD/Fs Levels and Congener Pattern Characteristics in Stack Gas and Fly Ash from Waste Incinerators, Environmental Media, Food, and Human Tissues: An Overview (국내 폐기물소각시설 배출가스와 소각재, 환경 매질, 식품 및 인체에서 검출된 다이옥신 농도수준 및 이성질체 유형 특성)

  • Kim Su-Jin;Park Soyoung;Choi Seung-Pil;Lee Dong Soo
    • Environmental Analysis Health and Toxicology
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    • v.19 no.1
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    • pp.1-24
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    • 2004
  • Since dioxins became a serious concern in Korea, a significant number of investigations have been conducted to address diverse issues related to dioxins. However, the results have not been organized for ready access and use. The principal purposes of the work were to ⅰ) provide an archive of dioxin researches in Korea and ⅱ) give an overview of dioxin contamination. The focus of this work was placed on the contamination levels and characteristics concerning the waste incinerators emissions, environmental media, and biological samples(fishes/shellfishes, foods, and human body). Principal component analysis was conducted to identify common and/or unique features and the important variables associated with the congener patterns. From a comprehensive search of academic journals, research and monitoring project reports, dissertations, and periodicals of other forms, a total of 115 counts were found that met the purposes of this study. The contamination levels of various samples were summarized and compared to those reported in foreign literatures. The congener patterns varied largely with environmental media and distinguished particularly by OCDD, 1,2,3,4,6,7,8-HpCDF, and OCDF for the samples within the same media. The proximity to emission sources differentiated the congener patterns in air and soil samples by the fraction of OCDD.

Levels of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Soil and Pine needle near Industry Complex in Changwon City

  • Kim Sang-Jo;Kim Sung-Yong;Ok Gon
    • Journal of Environmental Science International
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    • v.14 no.7
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    • pp.629-637
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    • 2005
  • Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were investigated in soil and pine needle samples taken from 16 sites of industrial and residential areas in Changwon, Korea to assess their distribution levels and to suggest the influence of industrial activities, PCDDs/DFs levels in the soil samples ranged from 0.57 to 20.79 pg I-TEQ/g dry weight with a mean value of 4.20 pg I-TEQ/g dry weight. PCDDs/DFs levels in the pine needle samples ranged from 0.39 to 8.75 pg I-TEQ/g dry weight with a mean value of 4.09 pg I-TEQ/g dry weight. In both soil and pine needle samples, the PCDDs/DFs concentrations in the industrial area sites were higher than those in the residential area sites. Homologue profiles in pine needle samples showed different patterns compared with soil samples. Based on the results of principal component analysis (PCA), it was confirmed that pine needles reflected a direct influence from local potential sources of PCDDs/DFs, showing a much higher degree of reflection than in soils. Pine needles are very useful as an indicator for monitoring or estimating the contamination of PCDDs/DFs in other areas which have been impacted by point pollution sources.