Spatial and vertical distributions of sedimentary halogenated polycyclic aromatic hydrocarbons in moderately polluted areas of Asia

Ohura, Takeshi; Sakakibara, Hiroyuki; Watanabe, Izumi; Shim, Won Joon; Manage, P.M.; Guruge, Keerth S.

doi:10.1016/j.envpol.2014.10.028

Cited by 45 publications

(16 citation statements)

References 43 publications

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“…The second largest contributor was 1-ClPy, compositions of which were 16% (6–31%) at the industrial site and 15% (8–25%) at the residential site. Such orders of ClPAH magnitude have been observed not only for particles in urban air1617 but also in sediments2627 and fly ash samples of waste incineration23. However, those in particles in urban streets and road tunnels showed a very different pattern, in which Cl 2 Py and 1-ClPy were relatively abundant components in a total of nine targeted ClPAHs20.…”

Section: Resultsmentioning

confidence: 94%

Source apportionment of chlorinated polycyclic aromatic hydrocarbons associated with ambient particles in a Japanese megacity

Kamiya

Iijima

Ikemori³

et al. 2016

Sci Rep

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Chlorinated polycyclic aromatic hydrocarbons (ClPAHs) are novel species of environmental contaminants whose possible sources remain unclear. The occurrence of ClPAHs within total suspended particles (TSP) is compared with weekly air samples at two sites of differing characteristics (industrial and residential) in the megacity of Nagoya, Japan. Samples were collected over 12 months during 2011–2012. All 24 species of targeted ClPAHs were detected at both industrial and residential sites, where mean concentrations of total ClPAHs in TSP were 20.7 and 14.1 pg/m3, respectively. High concentrations at the industrial site were frequently observed during winter, suggesting potent seasonal ClPAH sources there. Positive matrix factorization modeling of particulate ClPAH source identification and apportioning were conducted for datasets including ClPAHs, PAHs, elements and ions, plus elemental carbons in TSP. Eight factors were identified as possible ClPAH sources, with estimates that the dominant one was a specific source of ClPAH emission (31%), followed by traffic (23%), photodegradable and semi-volatile species (18%), long-range transport (11%), and industry and oil combustion (10%). Source contributions of ClPAHs differed substantially from those of PAHs. This suggests specific and/or potent ClPAH sources in the local area, and that the production mechanisms between ClPAHs and PAHs are substantially different.

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Section: Resultsmentioning

confidence: 94%

Source apportionment of chlorinated polycyclic aromatic hydrocarbons associated with ambient particles in a Japanese megacity

Kamiya

Iijima

Ikemori³

et al. 2016

Sci Rep

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“…(DMA) 2 [Y 9 (µ 3 -OH) 8 (µ 2 -OH) 3 BTB 6 ] n ·(solv) x (DMA = dimethylamine cation and BTB = 1,3,5-benzene(tris)benzoate), (gea-MOF-1), was a novel rare earth (RE) Nonanuclear MOF with an unusual gea topology. It could be used as adsorbent material for efficiency removing cationic dye MB + .…”

Section: Anionic Metal-organic Framework For High-efficiency Pollutanmentioning

confidence: 99%

“…2f Meanwhile, RE(III)-based MOFs are outstanding candidates as fluorescence probes materials for heavy metal ions sensing. 12 Porous materials (DMA) 2 [Y 9 (µ 3 -OH) 8 (µ 2 -OH) 3 BTB 6 ] n ·(solv) x (DMA = dimethyl amine cation and BTB = 1,3,5benzene(tris)benzoate) gea-MOF-1 were synthesized according to the previously reported lietrature 13 and confirmed by Powder X-ray diffraction (PXRD) patterns (Fig. S1, ESI †).…”

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confidence: 99%

Anionic metal–organic framework for high-efficiency pollutant removal and selective sensing of Fe(iii) ions

2016

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“…Mean concentrations of XPAHs in Tokyo Bay sediment core and Saginaw River watershed sediment reported by Horii et al [6] were 584 pg/g dry wt and 1,140 pg/g dry wt, respectively. Ohura et al [7] reported that the mean concentrations of XPAHs in sediment of Yellow Sea, Negombo, and Kandy were 764 pg/g dry wt, 808 pg/g dry wt, and 1,210 pg/g dry wt, respectively. These concentrations reported were comparable to those in this study.…”

Section: Concentration Of Xpahs In Surface Soils and River Sedimentsmentioning

confidence: 99%

“…Chlorinated or brominated PAHs (halogenated PAHs; XPAHs) are compounds whose one to several hydrogen atoms are substituted to chlorine or bromine atoms of parent PAHs that have been detected in the environment such as urban air [1][2][3][4], road tunnels [5], sediment [6,7], snow [8] and soil [9]. Horii et al [10] have showed that several XPAHs elicit dioxin-like activities comparable to those of several mono-ortho polychlorinated biphenyl (PCB) congeners.…”

Section: Introductionmentioning

confidence: 99%

Halogenated Polycyclic Aromatic Hydrocarbons in Soil and River Sediment from E-waste Recycling Sites in Vietnam

Wang

Miyake

Amagai

et al. 2016

J. of Wat. & Envir. Tech.

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We have determined halogenated polycyclic aromatic hydrocarbons (XPAHs) in 40 samples of surface soil (n = 32) and river sediment (n = 8) collected around the E-waste recycling area in Bui Dau, northern Vietnam. Thirty-one target compounds including 21 chlorinated PAHs (ClPAHs) and 10 brominated PAHs (BrPAHs) were quantified by gas chromatography-high resolution mass spectrometry (HRGC-HRMS). The highest concentrations of XPAHs in surface soils (3,960 pg/g dry wt) and river sediments (3,930 pg/g dry wt) were detected from samples near an open burning site and an E-waste recycling workshop. Composition ratios of BrPAHs to total XPAHs in this study were higher than those in fly ash of waste incinerators (12% and 29%), because E-waste in this study contained a large amount of brominated flame retardants (BFRs). These results suggested that XPAHs occurred in Ewaste recycling activities and they contaminated the surrounding soil and sediment. A large number of peaks of unidentified isomers of XPAHs, such as X n Phe/Ant (n = 1 − 4) were observed based on the isotope patterns of molecular ions [M, M+2, M+4] by HRGC-HRMS analyses. These unidentified isomers should be an important factor in the risk assessment for XPAHs.

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Spatial and vertical distributions of sedimentary halogenated polycyclic aromatic hydrocarbons in moderately polluted areas of Asia

Cited by 45 publications

References 43 publications

Source apportionment of chlorinated polycyclic aromatic hydrocarbons associated with ambient particles in a Japanese megacity

Source apportionment of chlorinated polycyclic aromatic hydrocarbons associated with ambient particles in a Japanese megacity

Anionic metal–organic framework for high-efficiency pollutant removal and selective sensing of Fe(iii) ions

Halogenated Polycyclic Aromatic Hydrocarbons in Soil and River Sediment from E-waste Recycling Sites in Vietnam

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