Polychlorinated dibenzo-p-dioxins and dibenzofurans in blood and breast milk samples from residents of a schistosomiasis area with Na-PCP application in China

Xiao, Ke; Zhao, Xingru; Liu, Zhengtao; Zhang, Bing; Fang, Liping; Liu, Wenbin; Zheng, Minghui

doi:10.1016/j.chemosphere.2010.02.042

Cited by 15 publications

(7 citation statements)

References 34 publications

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“…3b). It is in line with result observed the coke plants in China ) and in vicinity of the MSWI from areas of Tarragona, Constantí and Montcada in Spain (Domingo et al 2001) and atmospheric ambient in Kaohsiung (Lee et al 2004) and was similar to findings in several other reports (Leung et al 2007;Ma et al 2009;Ren et al 2009;Xu et al 2009;Zhang et al 2009;Xiao et al 2010). 1,2,3,4,6,7,8-HpCDF contributed more than 21 % of the sum of 2,3,7,8-substituted PCDD/Fs in industrial sites and reference sites, respectively.…”

Section: Concentrations Of Pcdd/fs In Soil/sedimentsupporting

confidence: 80%

“…PCDD/Fs are formed in a broad range of activities and processes, which are mainly caused by incomplete combusted processes such as municipal and industrial waste incineration, cement production, iron metallurgy, iron ore sintering plant, house coal burning, agricultural straw open burning, traffic, crematories and forest accidental fires Lee et al 2005; Aries et al 2006;Shih et al 2008;Zhu et al 2008;Ba et al 2009). They also originate from other human activities for the production and use of chlorinated organic compounds, which include the bleaching of pulp paper, the use of pentachlorophenol (PCP), sodium pentachlorophenate (PCP-Na) and 1,3,5-trichloro-2-(4-nitrophenoxy) benzene (CNP) as agrochemicals and application PCP-Na to control the spread of snailborne schistosomiasis (Bao et al 1995;Kiguchi et al 2007;Xiao et al 2010). Identifying the major sources of PCDD/Fs in the environment is generally considered as the preliminary step toward efficiently controlling and reducing PCDD/Fs pollution ).…”

Section: Introductionmentioning

confidence: 99%

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Pollution characteristics and potential health risk of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in soil/sediment from Baiyin City, North West, China

Peng

et al. 2013

Environ Geochem Health

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In order to better understand the environmental behaviors of persistent organic pollutants, the characteristics of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were investigated in twenty-three soil/sediment samples from Baiying City, Northwest China, in 2008. The possible sources and potential health risk of PCDD/Fs were also discussed. The concentrations of PCDD/Fs in nineteen soil samples varied between 20.13 and 496.26 pg/g dry weight (dw.), with an average value of 125.59 pg/g dw. The highest International Toxic Equivalent (I-TEQ) of PCDD/Fs (8.34 pg/g dw.) in soil was found at sample S1 collected from proximity to a copper metallurgy plant. The concentrations of PCDD/Fs in four sediment samples ranged from 37.69 to 491.49 pg/g dw., with an average value of 169.95 pg/g dw. The highest I-TEQ of PCDD/Fs (8.56 pg/g dw.) in sediment was found at sample S12 collected from the East big ditch with waste water discharged into the Yellow River. The results indicated that PCDD/Fs contamination of soil/sediment is originated from three sources: chlorine-containing chemicals, non-ferrous metal industrial PCDD/Fs emission and coal burning. The health risk exposure to PCDD/Fs through soil, dust ingestion and dermal absorption ranged from 0.0006 to 0.0134 pg/kg/day Word Health Organization's toxic equivalent in 1998 (WHO 1998 -TEQ) with mean values 0.0032 pg WHO 1998 -TEQ for adults and varied between 0.0012 and 0.0256 pg/kg/day WHO 1998 -TEQ with mean values 0.006 pg/kg/day WHO 1998 -TEQ for children, respectively. These results indicated that health risk of PCDD/Fs for children should be paid more attention.

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Section: Concentrations Of Pcdd/fs In Soil/sedimentsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Pollution characteristics and potential health risk of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in soil/sediment from Baiyin City, North West, China

Peng

et al. 2013

Environ Geochem Health

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“…Chemical compounds, such as niclosamide and sodium pentachlorophenate, have been field tested and proven effective [40–43], although concerns about the emergence of a resistant snail population remain [44]. However, even if effective in decreasing the host snail population, these synthetic molluscicides can be toxic to other living organisms [45–47] and are transferred up the food web [48,49]. Consequently, increasing efforts have focused on identifying and characterizing plant-derived molluscicides as safer alternatives.…”

Section: Discussionmentioning

confidence: 99%

A Novel Bacterial Pathogen of Biomphalaria glabrata: A Potential Weapon for Schistosomiasis Control?

et al. 2015

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BackgroundSchistosomiasis is the second-most widespread tropical parasitic disease after malaria. Various research strategies and treatment programs for achieving the objective of eradicating schistosomiasis within a decade have been recommended and supported by the World Health Organization. One of these approaches is based on the control of snail vectors in endemic areas. Previous field studies have shown that competitor or predator introduction can reduce snail numbers, but no systematic investigation has ever been conducted to identify snail microbial pathogens and evaluate their molluscicidal effects.Methodology/Principal findingsIn populations of Biomphalaria glabrata snails experiencing high mortalities, white nodules were visible on snail bodies. Infectious agents were isolated from such nodules. Only one type of bacteria, identified as a new species of Paenibacillus named Candidatus Paenibacillus glabratella, was found, and was shown to be closely related to P. alvei through 16S and Rpob DNA analysis. Histopathological examination showed extensive bacterial infiltration leading to overall tissue disorganization. Exposure of healthy snails to Paenibacillus-infected snails caused massive mortality. Moreover, eggs laid by infected snails were also infected, decreasing hatching but without apparent effects on spawning. Embryonic lethality was correlated with the presence of pathogenic bacteria in eggs.Conclusions/SignificanceThis is the first account of a novel Paenibacillus strain, Ca. Paenibacillus glabratella, as a snail microbial pathogen. Since this strain affects both adult and embryonic stages and causes significant mortality, it may hold promise as a biocontrol agent to limit schistosomiasis transmission in the field.

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“…PCDD/F and PCP pollution are still present in several countries in wood treatment areas but also in other areas in Japan and China where PCP was even applied in agriculture. [6,7] The PCDD/F are two families of 75 congeners of polychlorinated dibenzo-p-dioxin (PCDD) and 135 congeners of polychlorinated dibenzofurans. [8] Of these 210 compounds, there are 17 congeners with chlorine atoms at least in positions 2, 3, 7, and 8 of the parent compound.…”

Section: Introductionmentioning

confidence: 99%

Decontamination of metals, pentachlorophenol, and polychlorined dibenzo-p-dioxins and dibenzofurans polluted soil in alkaline conditions using an amphoteric biosurfactant

Reynier

Blais

Mercier

et al. 2013

Environmental Technology

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In this paper, flotation in acidic conditions and alkaline leaching soil washing processes were compared to decontaminate four soils with variable contamination with metals, pentachlorophenol (PCP), and polychlorodibenzo dioxins and furans (PCDD/F). The measured concentrations of the four soils prior treatment were between 50 and 250 mg/kg for As, 35 and 220mg/kg for Cr, 80 and 350mg/kg for Cu, and 2.5 and 30mg/kg for PCP. PCDD/F concentrations reached 1394, 1375, 3730, and 6289ng/kg for F1, S1, S2, and S3 soils, respectively. The tests were carried out with masses of 100g of soil (fraction 0-2 mm) in a 2 L beaker or in a 1 L flotation cell. Soil flotation in sulphuric acid for 1 h at 60 degreeC with three flotation cycles using the surfactant cocamidopropyl betaine (BW) at 1% allows the solubilization of metals and PCP with average removal yields of 85%, 51%, 90%, and 62% for As, Cr, Cu, and PCP, respectively. The alkaline leaching for 2 h at 80 degreeC solubilizes As, Cr, Cu, and PCP with average removal yields of 60%, 32%, 77%, and 87%, respectively. Tests on PCDD/F solubilization with different surfactants were carried out in combination with the alkaline leaching process. PCDD/F removal yields of 25%, 72%, 70%, and 74% for F1, S1, S2, and S3 soils, respectively, were obtained using the optimized conditions.

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Polychlorinated dibenzo-p-dioxins and dibenzofurans in blood and breast milk samples from residents of a schistosomiasis area with Na-PCP application in China

Cited by 15 publications

References 34 publications

Pollution characteristics and potential health risk of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in soil/sediment from Baiyin City, North West, China

Pollution characteristics and potential health risk of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in soil/sediment from Baiyin City, North West, China

A Novel Bacterial Pathogen of Biomphalaria glabrata: A Potential Weapon for Schistosomiasis Control?

Decontamination of metals, pentachlorophenol, and polychlorined dibenzo-p-dioxins and dibenzofurans polluted soil in alkaline conditions using an amphoteric biosurfactant

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