作　　者： ; ; ; ;

机构地区： 华南理工大学轻工与食品学院制浆造纸工程国家重点实验室

出　　处： 《应用化学》 2011年第4期471-477,共7页

摘　　要： 以十七烷酸为内标试剂,用甲基叔丁基醚对水样进行液-液萃取后,用三甲基氯代硅烷和N-O-双-(三甲基硅烷基)三氟乙酰胺进行硅烷化处理,以吡啶为溶剂,用GC-MS仪对造纸厂二次纤维造纸车间的污水样进行定性和相对含量分析,检出约50种有机污染物。主要是植物原料的小分子溶出物、树脂酸、脂肪酸及各种化学添加剂。树脂酸在制浆污水中的含量较大,主要来自造纸原料和松香施胶剂;脂肪酸、芳香酸及其衍生物主要存在于澄清白水和混合污水中,主要来源于二次纤维浆、造纸原料与各种添加剂;相对而言,最终进入污水处理厂前的混合污水中有机物质种类最多;真空泵密封水中有机污染物的种类最少,主要是难降解性的芳香类化合物。讨论了不同生产工段污水中各种有机污染物质的差异和来源及对环境的危害性。 Gas chromatography-mass spectrometry（GC-MS） was employed for the determination of organic pollutants in recirculating water of a paper-recycling industry.Origins of the detected organics and potential pollutions on the environment and human being were discussed.Their contents in water at different production stages were compared.Water samples were first pre-treated by liquid-liquid extraction using methyl tert-butylether（MTBE） with the presence of heptadecanoic acid（C17） as the internal standard.They were then treated by bis（trimethylsilyl）trifluoroacetamide（BSTFA） and trimethylchlorosilane（TMCS） in pyridine,followed by GC-MS analysis for the detection of respective trimethylsilyl esters formed at different stages.Using this approach,nearly 50 kinds of organic chemicals,such as resin acids,fatty acids,additives and their ramifications were detected in the processed water.And the resin acids were mainly existed in pulping water,which may come from secondary fibers and sizing agents.The fatty acids,aromatic acids and their derivatives,which may come from secondary fibers,impurities and additives,such as printing ink,plastic matters,surface active agents,were mainly existed in the white water and mixed water coming out of the mill.It was found that the mixed water contained most kinds of organic chemicals while the vacuum pumping water contained the least organic chemicals.The main chemicals contained in vacuum water were aromatic acids.There are large mounts of fatty acids,aromatic acids and theirs derivations in the wastewater of each papermaking processes,most of them are brought by the adding of secondary fiber and other additives.These organics are harmful to the environment,and difficult to be eliminated by sedimentation and flocculation.Therefore,in order to reduce the pollution of the organic pollutants in effluent wastewater,it is necessary to avoid adding phthalic acid and ester of phthalic acid.The addition of additives of long chain fatty acids and aromatic compound should be mini

关 键 词： 二次纤维 造纸污水 有机污染物

领　　域： [理学] [理学]