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Rock phosphate as a novel solid-phase extraction adsorbent for analysis of oxalic acid in plant xylem saps by RP-HPLC

Citation

Ni, L and Wei, W and Wang, Y and Cui, J and Wei, Z, Rock phosphate as a novel solid-phase extraction adsorbent for analysis of oxalic acid in plant xylem saps by RP-HPLC, Journal of Liquid Chromatography and Related Technologies, 36, (3) pp. 274-287. ISSN 1082-6076 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Taylor & Francis Group, LLC

Official URL: http://www.tandfonline.com/loi/ljlc20#.U-A2i_mSx8E

DOI: doi:10.1080/10826076.2011.653852

Abstract

A simple and effective method for elimination the interference from nitrate ions on oxalic acid in RP-HPLC by solid-phase extraction with rock phosphate was developed. Rock phosphate is a cost-effective and environmentally friendly mineral material; it exhibited good adsorption ability for oxalic acid, other than nitrate ions, malic, or citric acid; therefore, rock phosphate could be used as an excellent solid-phase extractor for solving interference from nitrate ions on oxalic acid in RP-HPLC. The optimum experimental conditions for the separation and determination of organic acids were studied. After the interference was eliminated, oxalic acid was determined by RP-HPLC at the optimum chromatographic conditions with an average recovery ranging between 96.2% and 100.2%; the relative standard deviations (RSD) were less than 3.0%. This method was successfully applied to determine the oxalic acid in xylem sap of pokeweed.

Item Details

Item Type:Refereed Article
Keywords:nitrate, oxalic acid, rock phosphate, RP-HPLC, separation, solid-phase extraction
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Wei, Z (Professor Zhenggui Wei)
ID Code:91130
Year Published:2013
Web of Science® Times Cited:1
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2014-05-08
Last Modified:2014-08-05
Downloads:0

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