【摘要】 取含分散染料的废水样品5.00mL,用由正丙醇200μL和硫酸铵2.75g组成的萃取剂体系进行双水相超声提取21min。离心5min后,分取上层有机相50μL,吹氮蒸干。用CH₃CN-H₂O（7+3）混合液100μL溶解残渣。此溶液引入作为固定相的Zorbax Eclipse XDB-CN色谱柱,并用0.1%（体积分数）甲酸溶液和乙腈（3+7）混合液为流动相进行梯度洗脱。用MS/MS测定其中7种分散染料的含量。质谱分析中采用电喷雾离子源及多反应监测模式。所测定的7种分散染料的质量浓度在一定范围内与其峰面积呈线性关系,7种染料的检出限（3S/N）在3.3～57ng·L^-1之间。以印染废水样品为基质,按标准加入法进行回收试验,测得回收率在80.0%～116%之间,测定值的相对标准偏差（n=5）在1.2%～10%之间。更多还原

【Abstract】 5.00 mL of the wastewater sample were taken and extracted ultrasonically for 21 min by biaqueous phase extraction with extractant system composed of 200μL of n-propanol and 2.75 g of（NH₄）₂SO₄.After centrifuging for 5 min,50μL of the upper organic phase was taken and evaporated to dryness by N₂-blowing.The residue was dissolved with 100μL of CH₃CN-H₂O（7+3）mixture,and the solution was then separated by HPLC using Zorbax Eclipse XDB-CN column as stationary phase and a mixture of 0.1%（φ）formic acid solution and acetonitrile（3+7）was used as mobile phase for elution.MS/MS with ESI,MRM was adopted for determination of the 7 disperse dyes.As shown by the results,linear relationships between values of peak area and mass concentration of the 7 disperse dyes were found in definite ranges,with detection limits（3 S/N）in the range of 3.3-57 ng·L^-1.Test for recovery by standard addition method was made using wastewater from printing and dyeing process as matrix,giving results in the range of 80.0%-116%,and RSDs（n=5）ranged from 1.2% to10%.更多还原