Issue 23, 2015

A silica coated paper substrate: development and its application in paper spray mass spectrometry for rapid analysis of pesticides in milk

Abstract

A novel silica coated paper substrate is developed through a facile vacuum filtration method by using the commercially available silica particles as the coating material and corn starch as the adhesive agent. Unlike the commercial silica coated paper (namely grade SG81 paper), the resulting paper substrate was covered by a layer of silica particles on the top side of the paper, and no cellulosic fibers were exposed at its surface. After loading a solution sample on its surface, the coated silica particles allowed the target analytes to remain at the top side rather than penetration through the substrate. Owing to this effect and the special interactions with analytes, the as-prepared silica coated paper demonstrated superior performance in the analysis of different pesticides in milk using paper spray mass spectrometry to the uncoated filter paper and grade SG81 paper. Compared to the other two papers, paper spray analysis using the as-prepared paper improved the estimated lower limit of quantitation of seven pesticides (alachlor, acetochlor, pretilachlor, butachlor, metolachlor, napropamid and benzeneacetamide) in milk by a factor of 2 to 19-fold depending on the pesticide. This study offers a novel paper substrate for paper spray in high sensitivity analysis of target analytes in a complex foodstuff matrix without any pretreatment.

Graphical abstract: A silica coated paper substrate: development and its application in paper spray mass spectrometry for rapid analysis of pesticides in milk

Supplementary files

Article information

Article type
Paper
Submitted
04 9 2015
Accepted
09 10 2015
First published
09 10 2015

Analyst, 2015,140, 8048-8056

A silica coated paper substrate: development and its application in paper spray mass spectrometry for rapid analysis of pesticides in milk

Q. Wang, Y. Zheng, X. Zhang, X. Han, T. Wang and Z. Zhang, Analyst, 2015, 140, 8048 DOI: 10.1039/C5AN01823D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements