摘要
建立了分光光度法测定日化品中三氯生的方法。在酸性条件下,亚硝酸钠和对氨基苯磺酸生成重氮盐,三氯生在碱性条件下与此重氮盐发生偶合反应,形成的黄色偶氮化合物,其在452nm处有最大吸收。三氯生浓度在0.075—30mg/L范围内呈良好的线性关系,检出限为0.075mg/L。本方法成功应用于日化产品中三氯生的测定,与高效液相色谱法相比,结果令人满意。
A selective spectrophotometric method for the determination of triclosan in personal care products was developed based on the reaction of sodium nitrite with p-aminobenzene sulfonie acid in acidic medium to form diazo salt,with which triclosan further formed an azo compound in alkaline medium. The resulting yellow colored product has a maximum absorption at 452nm. A good linear relationship （r=0. 9999） was obtained in the range 0. 075-30mg/L. A detection limit of 0. 075 mg/L was achieved and the relative standard deviation was 0.24% （n= 11） at 14mg/L of triclosan. The method was applied to the analyses of triclosan in daily chemical products and the results were in good agreement with those obtained by high-performance liquid chromatography.
出处
《光谱实验室》
CAS
CSCD
北大核心
2009年第3期487-490,共4页
Chinese Journal of Spectroscopy Laboratory
基金
国家自然科学基金(20345006
20575043)项目资助
关键词
三氯生
日化品
分光光度法
Triclosan
Personal Care Products
Spectrophotometry
