胶束增稳室温磷光法测定加标菠萝罐头样品中1-萘乙酸的方法

Method for the Quantitative Determination of 1-Naphthaleneacetic Acid in Spiked Canned Pineapple Samples by Micelle-Stabilized Room Temperature Phosphorescence.

机构信息

Department of Analytical Chemistry, Faculty of Sciences, University of Granada, E-18071 Granada, Spain.

出版信息

J Agric Food Chem. 1998 Feb 16;46(2):561-565. doi: 10.1021/jf9704266.

Abstract

This paper presents a convenient method for the determination of 1-naphthaleneacetic acid (NAA) plant growth regulator in spiked canned pineapple samples by micellar-stabilized room temperature phosphorescence with sodium dodecyl sulfate as a micellar medium, thallium nitrate as an external heavy atom, and sodium sulfite as an oxygen scavenger. A multivariate optimization approach using the type of central composite blocked cube-star design was carried out. The analytical curve of NAA gives a linear dynamic range of 70-500 ng mL(-)(1) with a detection limit of 21 ng mL(-)(1) and precision of 2.37% (n = 7). A mean recovery value of 98.6% was obtained for 250 ng mL(-)(1) NAA in the pineapple samples.

摘要

本文提出了一种简便的方法，以十二烷基硫酸钠为胶束介质、硝酸铊为外部重原子、亚硫酸钠为除氧剂，采用胶束增稳室温磷光法测定加标菠萝罐头样品中的1-萘乙酸（NAA）植物生长调节剂。采用中心复合区组立方星设计类型进行了多变量优化。NAA的分析曲线线性动态范围为70 - 500 ng mL⁻¹，检测限为21 ng mL⁻¹，精密度为2.37%（n = 7）。菠萝样品中250 ng mL⁻¹ NAA的平均回收率为98.6%。