Combined fluorescent measurements, parallel factor analysis and GC-mass spectrometry in evaluating the photodegradation of PAHS in freshwater systems.


:To better understand the transformation and photochemical fate of PAHs in aquatic environments, a custom-designed closed-circuit recirculation photodegradation system, combined with inline semi-continuous fluorescence and absorbance measurements, as well as modelling of excitation-emission (EEM) measurements with parallel factor analysis (PARAFAC), and GC-MS analysis, were combined to create a robust tool for holistically assessing the photodegradation of individual PAHs, their mixtures and photoproduct formation. Selected compounds included in the US EPA priority list, representing 2- to 6-ring compounds, were monitored individually and in mixtures, during 24 h photodegradation experiments. Experiments were conducted in solutions simulating ideal (ultrapure water) and environmentally relevant conditions (1.00 mg L-1 Suwannee River Natural Organic Matter (SRNOM)). The fluorescence, primary PARAFAC components and quantification data obtained by GC-MS, indicated that the decline in parent molecule concentration occurred rapidly within 200 min. The degradation rates of parent PAHs increased with aromaticity (6-ring ≫ 2-ring PAHs) and followed pseudo-first order degradation kinetics. The presence and transformation of degradation products, were captured by PARAFAC. NOM influenced the diversity of photoproducts. From the GC-MS results, photoproducts were only detected in Ant, BAnt and the PAH mixture solutions, but optical property analyses indicated that diverse changes occurred with all PAHs. Spectrometric and chromatographic data demonstrated that parent PAHs and photoproducts co-existed at various stages, which is significant for freshwater systems contaminated with these compounds if photoproducts have higher-toxic potential. These results may be used to model the hazard-potential associated with PAHs present in freshwater systems and understanding the mechanisms that govern their environmental fate.






Seopela MP,Powers LC,Clark C,Heyes A,Gonsior M




Has Abstract


2020-12-21 00:00:00












  • Mineral induced mechanochemical degradation: the imazaquin case.

    abstract::The potential role of mechanochemical processes in enhancing degradation of imazaquin by soil components is demonstrated. The investigated components include montmorillonite saturated with Na(+), Ca(2+), Cu(2+)and Al(3+), Agsorb (a commercial clay mix), birnessite and hematite. The mechanical force applied was manual ...


    pub_type: 杂志文章


    authors: Nasser A,Buchanovsky N,Gerstl Z,Mingelgrin U

    更新日期:2009-03-01 00:00:00

  • Biological indicators capable of assessing thermal treatment efficiency of hydrocarbon mixture-contaminated soil.

    abstract::In China, there are many special sites for recycling and washing the used drums, which release a variety of C5-C40 hydrocarbon mixture into the soil around the site. The remediation of these contaminated sites by thermal treatment is adopted ubiquitously and needs to be assessed. Here we report the feasibility of biol...


    pub_type: 杂志文章


    authors: Wang J,Zhan X,Zhou L,Lin Y

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  • Soil temperature and moisture effects on the persistence of synthetic androgen 17alpha-trenbolone, 17beta-trenbolone and trendione.

    abstract::Trenbolone acetate (TBA) is a synthetic androgenic steroid hormone administered as a subcutaneous implant for growth promotion in beef cattle. The primary metabolite excreted in manure from implanted cattle is 17alpha-trenbolone with lesser amounts of 17beta-trenbolone and trendione also present. At 22 degrees C and f...


    pub_type: 杂志文章


    authors: Khan B,Lee LS

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  • Association of CYP1A1, CYP1B1 and CYP17 gene polymorphisms and organochlorine pesticides with benign prostatic hyperplasia.

    abstract::It is well established that steroidal hormones (testosterone and estrogen) increase benign prostatic hyperplasia (BPH) risk. Cytochrome P450 (CYP) enzymes especially CYP1A1, CYP1B1 and CYP17 metabolize these hormones. Apart from that, several endocrine disrupting organochlorine pesticides (OCPs) are reported to mimic ...


    pub_type: 杂志文章


    authors: Kumar V,Banerjee BD,Datta SK,Yadav CS,Singh S,Ahmed RS,Gupta S

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  • Ambient air pollutants aggravate association of snoring with prevalent hypertension: results from the Henan Rural Cohort.

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    pub_type: 杂志文章


    authors: Zhang H,Li S,Chen G,Abdulai T,Liu X,Wang Y,Liang H,Hou J,Huo W,Mao Z,Wang C,Bie R

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  • Natural variability and correlations in the metabolic profile of healthy Eisenia fetida earthworms observed using ¹H NMR metabolomics.

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    pub_type: 杂志文章


    authors: Whitfield Slund M,Celejewski M,Lankadurai BP,Simpson AJ,Simpson MJ

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  • Structural study on inclusion complexes of cyclodextrins with organophosphorus pesticides by use of rotational strength analysis method.

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    pub_type: 杂志文章


    authors: Ishiwata S,Kamiya M

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  • Biosorption of diethyl phthalate ester by living and nonliving Burkholderia cepacia and the role of its cell surface components.

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    pub_type: 杂志文章


    authors: Luo S,Li L,Chen A,Zeng Q,Xia H,Gu JD

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  • Alkylphenols in adipose tissues of Italian population.

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    pub_type: 杂志文章


    authors: Ferrara F,Ademollo N,Orrù MA,Silvestroni L,Funari E

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    pub_type: 杂志文章


    authors: Sohn S,Kim D

    更新日期:2005-01-01 00:00:00

  • Cytotoxicity and colloidal behavior of polystyrene latex nanoparticles toward filamentous fungi in isotonic solutions.

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    authors: Nomura T,Tani S,Yamamoto M,Nakagawa T,Toyoda S,Fujisawa E,Yasui A,Konishi Y

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    authors: Urani C,Doldi M,Crippa S,Camatini M

    更新日期:1998-12-01 00:00:00

  • Solvent extraction and tandem dechlorination for decontamination of soil.

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    authors: Nam P,Kapila S,Liu Q,Tumiatti W,Porciani A,Flanigan V

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  • Phytotoxicity and phytoremediation of 2,6-dinitrotoluene using a model plant, Arabidopsis thaliana.

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    authors: Yoon JM,Oliver DJ,Shanks JV

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    authors: Herrchen M,Keller D,Lepper P,Mangelsdorf I,Wahnschaffe U

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    authors: Botelho RG,Christofoletti CA,Correia JE,Ansoar Y,Olinda RA,Tornisielo VL

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    authors: Rosenmai AK,Niss F,Mandava G,Lundqvist J,Oskarsson A

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    authors: Zhang H,Wang P,Yu H,Yu K,Cao Z,Xu F,Yang X,Song M,Li Y

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    pub_type: 杂志文章


    authors: Kalčíková G,Zupančič M,Jemec A,Gotvajn AŽ

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  • Antioxidant responses of triangle sail mussel Hyriopsis cumingii exposed to harmful algae Microcystis aeruginosa and high pH.

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    pub_type: 杂志文章


    authors: Liu Y,Li L,Zheng L,Fu P,Wang Y,Nguyen H,Shen X,Sui Y

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    pub_type: 杂志文章


    authors: Parente TE,De-Oliveira AC,Silva IB,Araujo FG,Paumgartten FJ

    更新日期:2004-03-01 00:00:00

  • Adsorption-oxidation of hydrogen sulfide on activated carbon fibers: effect of the composition and the relative humidity of the gas phase.

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    pub_type: 杂志文章


    authors: Bouzaza A,Laplanche A,Marsteau S

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  • Optimization of chelators to enhance uranium uptake from tailings for phytoremediation.

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    pub_type: 杂志文章


    authors: Jagetiya B,Sharma A

    更新日期:2013-04-01 00:00:00

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    pub_type: 杂志文章


    authors: Gu Z,Chen W,Li Q,Zhang A

    更新日期:2019-01-01 00:00:00

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    pub_type: 杂志文章,评审


    authors: Everaert K,Baeyens J

    更新日期:2002-01-01 00:00:00

  • Defluorination by ion exchange of SO42- on alumina surface: Adsorption mechanism and kinetics.

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    pub_type: 杂志文章


    authors: He Y,Huang L,Song B,Wu B,Yan L,Deng H,Yang Z,Yang W,Wang H,Liang Z,Luo J

    更新日期:2021-01-19 00:00:00

  • Environmental release of dioxins from reservoir sources during beach nourishment programs.

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    pub_type: 杂志文章


    authors: Tondeur Y,Vining B,Mace K,Mills W,Hart J

    更新日期:2012-07-01 00:00:00

  • Mycelium growth and degradation of creosote-treated wood by basydiomycetes.

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    pub_type: 杂志文章


    authors: Galli E,Brancaleoni E,Di Mario F,Donati E,Frattoni M,Polcaro CM,Rapanà P

    更新日期:2008-07-01 00:00:00

  • Alum sludge as an efficient sorbent for hydrogen sulfide removal: Experimental, mechanisms and modeling studies.

    abstract::This paper firstly reported a systematic study of using alum sludge (waterworks residue) for H2S adsorption. Various trials were performed at ambient temperature in a fixed bed column to study the effects of H2S flow rate, sorbent bed depth on the alum sludge adsorption efficiency of H2S. The Breakthrough Curves were ...


    pub_type: 杂志文章


    authors: Ren B,Lyczko N,Zhao Y,Nzihou A

    更新日期:2020-06-01 00:00:00

  • Eliminating interference from iron(III) for ultraviolet absorbance measurements of dissolved organic matter.

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    pub_type: 杂志文章


    authors: Doane TA,Horwáth WR

    更新日期:2010-03-01 00:00:00