摘要
目的建立一种共振光散射法测定痕量双酚A方法。方法在pH8.0的B-R缓冲溶液中,KIO4-藏红T-双酚A体系发生氧化还原及离子缔合反应,使藏红T在波长332nm和560nm处的共振光散射明显增强,据此建立一种共振光散射法测定样品中痕量双酚A的含量。结果共振光散射增强值(ΔI)与双酚A浓度(ρ)之间呈良好的线性关系。在332nm处,方法的线性范围为1.43×10^(-4)~2.40μg/mL,检出限为0.043μg/L;在560nm处,方法的线性范围为5.70×10^(-4)~3.60μg/mL,检出限为0.17μg/L。结论建立的方法简便快速、灵敏度高,用于塑料薄膜和矿泉水瓶浸提液中双酚A的测定,结果满意。
ObjectiveTo develop a novel resonance light scattering(RLS)method for determination of trace amount of bisphenol A(BPA)MethodsIn pH80Britton Robinson buffer solution,the RLS value of safranine T was significantly enhanced at332nm and560nm due to the redox and ion association reaction in KIO4safranine T BPA system A resonance light scattering method was established for the determination of trace amount of BPA ResultsThere was a good linear relationship between resonance scattering enhancement value(ΔI)and BPA concentration(ρ)At332nm,the linear relationship range of the method was143×10-4-240μg/mL with the detection limit of0043μg/L At560nm,the linear relationship range of the method was570×10-4-360μg/mL with the detection limit of017μg/L ConclusionThe established method was simple,rapid and sensitive Application on food packing and mineral water bottle extracts to determine BPA achieved satisfactory results.
作者
汤健彬
吕昌银
唐宏兵
欧阳运富
石飞云
TANG Jian bin;LV Chang yin;TANG Hong bing;OUYANG Yun fu;SHI Fei yun(Changzhou Municipal Center for Disease Control and Prevention, Changzhou 213022,China)
出处
《江苏预防医学》
CAS
2017年第6期612-613,618,共3页
Jiangsu Journal of Preventive Medicine
基金
常州市科技支撑计划(社会发展)(CE20165042)
关键词
双酚A
藏红T
共振光散射
高碘酸钾
Bisphenol A
Safranine T
Resonance light scattering
Potassium periodate
