title: [The Study on the Characteristics of Organic Pollution in Typical Herbicide Plant Wastewater].
abstract: Herbicide wastewater is one of tne industrial wastewater, it has high salt content, poor biodegradability, biodegradable characteristics. Nitrogen-containing organic compounds are dominated in dissolved organic matter and dissolved organic matter of wastewater, BOD: COD = 0.045, C:N:P = 692:426:1. Applying static headspace, purg and trap, solid-phase extraction, solid-phase microextraction and liquid-liquid extraction as pretreatment methods combined with gas chromatography/mass spectrometry (GC/MS), which qualitatively analyzed the organic components of the Atrazine, acetochlor herbicide production wastewater and researched the UV spectrum, three-dimensional fluorescence spectroscopy of the wastewater and its major pollutants. The study of GC/MS indicated that Wastewater contained chlorinated hydrocarbons, BTEX and triazines, amides herbicides etc. 38 kinds of volatile and semi-volatile organic compounds, atrazine and acetochlor herbicides accounted for 87. 99%. Affected monocyclic or heterocyclic substances, the ultraviolet absorption spectrum of the wastewater in 210-230 and 250-270 nm in that the amino group lead to the UV absorption red shift 20 nm. Wastewater generated 5 fluorescence peak in λ(ex)/λ(em) = 200-280/300-400 nm, such as a(225/305 nm), b(265/365 nm), c(275/305 nm), d(285/390 nm), e(320/375 nm). Based on three-dimensional fluorescence results of the different functional groups of the characteristics organic, fluorescent area of unsaturated bond is in λ(ex)/λ(em) = 215-230/290-340 nm, the main contribution of the fluorescent substance in the region were olefins, benzene, heterocyclic in the wastewater; fluorescent area of Phenolic hydroxyl and carbonyl is in λ(ex)/λ(em) = 270/300 nm, the main contribution of the fluorescent substance in the region were phenols, ketones.
authors.forename: Yu-hui
authors.initials: YH
authors.lastname: Chen
authors.forename: Hong-bo
authors.initials: HB
authors.lastname: Xi
authors.forename: Dong
authors.initials: D
authors.lastname: Yu
authors.forename: Yue-xi
authors.initials: YX
authors.lastname: Zhou
authors.forename: Xue-min
authors.initials: XM
authors.lastname: Chen
authors.forename: Xiao-yong
authors.initials: XY
authors.lastname: Fu
mesh_terms: D001280:Atrazine; D005453:Fluorescence; D008401:Gas Chromatography-Mass Spectrometry; D006540:Herbicides; D059625:Liquid-Liquid Extraction; D052617:Solid Phase Microextraction; D013050:Spectrometry, Fluorescence; D014052:Toluidines; D055549:Volatile Organic Compounds; D062065:Wastewater / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*
chemical_list: D001280:Atrazine; D006540:Herbicides; D014052:Toluidines; D055549:Volatile Organic Compounds; D062065:Wastewater; D014873:Water Pollutants; C043377:acetochlor