一种用于高效液相色谱法分析干罗勒中异菌脲的光催化净化方法。

A clean-up method by photocatalysis for HPLC analysis of iprodione in dry basil.

作者信息

Maeda Osamu, Oikawa Chie, Shiomi Nobuo, Toriba Akira, Hayakawa Kazuichi

机构信息

House Food Analytical Laboratory Inc. Chiba 284-0033, Japan.

出版信息

Anal Sci. 2008 Aug;24(8):1053-5. doi: 10.2116/analsci.24.1053.

DOI:10.2116/analsci.24.1053

PMID:18689949

Abstract

Titanium dioxide was used as a photocatalyst to decompose interfering substances for a quantitative analysis of a fungicide (iprodione) in dry basil by HPLC. A quartz vial containing basil extract and titanium dioxide was irradiated with black light. The interfering substances were almost completely decomposed by 180 min of irradiation, whereas 88.3% of iprodione remained. The recovery of iprodione was 102.6% by the proposed method in basil extracts. This may have been due to different decomposition rates of the analyte and interfering substances.

摘要

二氧化钛被用作光催化剂来分解干扰物质，以便通过高效液相色谱法对干罗勒中的杀菌剂（异菌脲）进行定量分析。将含有罗勒提取物和二氧化钛的石英小瓶用黑光照射。照射180分钟后，干扰物质几乎完全分解，而异菌脲仍有88.3%残留。在所提出的方法中，罗勒提取物中异菌脲的回收率为102.6%。这可能是由于分析物和干扰物质的分解速率不同所致。