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采用吹扫捕集-气相色谱/质谱法(P&T-GC/MS),液液萃取-气相色谱/质谱法(LLE-GC/MS)等方法对丙烯酸装置废水中主要特征有机污染物进行了定性、定量分析,研究了废水和各主要特征污染物的三维荧光特性。结果表明,废水中共检出有机酸、苯系物、酯、醛、醇等24种有机污染物,其中含量较大的有乙酸55.13%,丙烯酸23%,甲醛21.81%,甲苯0.03%,4-羟基-2-丁酮0.02%,丙烯酸甲酯0.01%,正丁醇0.01%。丙烯酸废水中含有3个荧光峰,区域IV内的荧光峰(λex/em=290/355 nm)主要由废水中高浓度的丙烯酸产生,区域V内的2个荧光峰(λex/em=390/495 nm,λex/em=295/480nm)由水中的腐殖质产生。丙烯酸抑制了甲苯、甲醛、乙酸等3种荧光物质对丙烯酸废水荧光强度的贡献。4种荧光物质的荧光基团影响力大小:碳碳双键+羧基>苯环>羰基>羧基。
The main characteristics of organic pollutants in the wastewater of acrylic acid plant were characterized by P & T-GC / MS, LLE-GC / MS and so on. , Quantitative analysis of the three-dimensional fluorescence characteristics of wastewater and each of the major characteristics of contaminants. The results showed that 24 kinds of organic pollutants such as organic acids, benzene series, esters, aldehydes and alcohols were detected in wastewater. Among them, acetic acid 55.13%, acrylic acid 23%, formaldehyde 21.81%, toluene 0.03%, 4- 0.02% of hydroxy-2-butanone, 0.01% of methyl acrylate and 0.01% of n-butanol. Acrylic acid wastewater contains three fluorescence peaks, and the fluorescence peak in region IV (λex / em = 290/355 nm) is mainly caused by the high concentration of acrylic acid in wastewater. The two fluorescence peaks in region V (λex / em = 390/495 nm, λex / em = 295 / 480nm) is generated from humus in water. Acrylic acid suppresses the contribution of three kinds of fluorescent substances such as toluene, formaldehyde and acetic acid to the fluorescence intensity of acrylic wastewater. Four kinds of fluorescent substances influence the size of the fluorophores: carbon-carbon double bond + carboxyl> benzene ring> carbonyl> carboxyl.