固相萃取富集-化学发光法测定水环境中痕量双酚A  

Determination of trace bisphenol A by chemiluminescence combining with solid phase extraction

作　　者：张立科[1] 张艳鸽[2] 何琴[1] 

机构地区：[1]许昌学院化学化工学院,河南许昌461000 [2]许昌学院表面微纳米材料研究所,河南许昌461000

出　　处：《化学试剂》2010年第4期334-336,共3页Chemical Reagents

基　　金：河南省教育厅自然科学研究资助计划项目(2010B150031)

摘　　要：在碱性条件下,双酚A对鲁米诺-高锰酸钾化学发光体系有很强的抑制作用,据此,建立了流动注射化学发光法测定双酚A的新方法。方法的线性范围为0.4～100mg/L,检出限(S/N=3,n=3)为0.2mg/L,对10.0mg/L的双酚A标准溶液连续11次测定的相对标准偏差为1.8%。结合固相萃取富集技术,富集倍数达到100倍,方法已用于环境水样中痕量双酚A含量的测定。A mixture of potassium permanganate-luminol in the alkaline solution can create a stable chemiluminescence （CL） signal,and bisphenol A can inhibit the CL signal when it is poured into the mixture.Hereby a method for determination of micro-amounts of bisphenol A with chemiluminescence by flowing injection of the permanganate-luminol mixture was proposed.A linear relationship between the relative CL intensity （△I） and the concentration of bisphenol A was obtained in the range of 0.4～100 mg/L,resulting in a linear regression equation of I=2.8c-0.4 （r=0.999 3） with a detection limit of 0.2 mg/L.The relative standard deviation was less than 1.8% for a solution containing 10 mg/L of bisphenol A （n=11）.Combining with the solid phase extraction （SPE） technique,this method has been applied to determination of bisphenol A in water samples.

关 键 词：双酚A 化学发光 鲁米诺 高锰酸钾 

分 类 号：O657.31[理学—分析化学]