【摘要】 用正相色谱 质谱联用法 (NPLC MS)分离分析高聚合度的NPnEO(n >2 ) ,用气相色谱 质谱联用方法 (GC MS)测定其中的NP ,NP1EO和NP2EO浓度 ,对NPnEO在城市污水处理厂的迁移转化行为进行了研究 .在污水处理厂的进水中 ,检测出NP和NPnEO (n =1～ 2 3 ) ,总浓度为 1 74nmol/L ,其中NP2EO的浓度最高 ,为89 6nmol/L ;其次分别为NP(4 2 2nmol/L)和NP1EO(1 2 2nmol/L) ;出水中同样检测出NP和NPnEO(n =1～1 8) ,其中NP2EO的浓度最高 ,为 3 7 2nmol/L ;其次分别为NP(6 64nmol/L)和NP1EO(0 1 3 5nmol/L) .在城市污水处理过程中 ,NPnEO从高聚合度降解成低聚合度 ,NP和NPnEO的总去除率为 71 % .另外 ,NP和NPnEO在污泥及污泥过滤水中的分配表明污泥对NPnEO有明显的吸附作用 ,并近似符合Dubinin Astakhov等温吸附更多还原

【Abstract】 The concentrations of individual NP n EO ( n >2) were separated and analyzed by normal phase liquid chromatograph mass spectrometry (NPLC MS), and those of NP, NP1EO and NP2EO were determined by GC MS. NP and NP n EO ( n =1～23) were found in the influent water, and the concentration of total NP n EO was 174nmol/L. Of NP n EO, the abundance of NP2EO (89 6 nmol/L) was the highest, and next was NP (42 2 nmol/L) followed by NP1EO (12 2 nmol/L) 71% NP and NP n EO were removed by sewage treatment process and the adsorption on sludge contributed to the removal for these compounds. It was found that the adsorption of NP n EO on sludge followed the Dubinin Astakhov model, assuming each NPEO were with similar adsorption potential.更多还原