摘要
在酸性介质中,双酚A对羟基自由基氧化结晶紫的反应具有抑制作用,据此建立了分光光度法测定痕量双酚A的新方法。在最佳实验条件下测量结晶紫580nm处的吸光度变化值,得到方法的线性范围是0.015—0.25μg/mL,相关系数为0.9994,检出限和定量下限分别为3.3、11.0ng/mL。应用此法测定了6种样品中双酚A的含量,回收率在91%—118%之间,相对标准偏差为1.3%—6.8%。该方法简便快速,结果稳定准确。
A new spectrophotometric method for the determination of trace bisphenol A was established based on inhibitory effect of bisphenol A on the oxidation of crystal violet with peroxyl radical produced from Fenton reaction [Fe（ II ） ＋H2O2] in hydrochloric acid medium. The absorption change of crystal violet was measured under the optimum experimental conditions at 580nm. The detection limit and the quantification limit for bisphenol A was 3.3ng · mL-1 and 11. 0ng · mL-1, respectively; and the linear range was 0. 015-0. 25ug · mL-1 （r= 0. 9994）. The proposed method was used for the determination of bisphenol A in 6 samples with recoveries of 91%-118% ,and the RSD was 1.3 %-6.8 % （n = 6）. This method is simple, fast,reliable and accurate.
出处
《光谱实验室》
CAS
CSCD
北大核心
2010年第6期2222-2226,共5页
Chinese Journal of Spectroscopy Laboratory
基金
国家质检总局科技计划项目(2009QK324)
