除草剂废水作为难处理的工业废水之一, 具有含盐量高、 可生化性差、 难生物降解等特点。 该废水含有的溶解性有机物与难溶解性有机物均以含氮有机物为主, BOD∶COD=0.045, C∶N∶P=692∶426∶1。 实验采用吹扫捕集、 静态顶空、 固相微萃取、 固相萃取、 液液萃取与气相色谱/质谱联用, 定性分析了莠去津、 乙草胺除草剂生产废水中主要有机污染物, 并研究了废水及主要污染物的紫外吸收光谱、 三维荧光光谱。 定性结果显示, 废水中含有氯代烃、 苯系物和均三嗪类、 酰胺类除草剂等38种挥发性、 半挥发性有机物, 其中莠去津、 乙草胺等除草剂占87.99%。 受单环或杂环类物质的影响, 废水在波长210～230和250～270 nm范围内有紫外吸收, 且氨基基团导致其紫外吸收红移20 nm。 废水在λex/λem=200～280/300～400 nm产生了5个荧光峰a(225/305 nm), b(265/365 nm), c(275/305 nm), d(285/390 nm), e(320/375 nm)。 不同官能团特征有机物三维荧光结果显示, λex/λem=215～230/290～340 nm附近区域为不饱和键荧光区, 废水中该区域主要荧光贡献物质为烯烃、 苯环、 杂环; λex/λem=270/300 nm附近区域为酚羟基、 羰基荧光区, 废水中该区域主要荧光贡献物质为苯酚类、 酮类。

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 λex/λem=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 λex/λem=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 λex/λem=270/300 nm, the main contribution of the fluorescent substance in the region were phenols, ketones.