Abstract
N-1-Naphthylphtalamic acid (naptalam) and its degradation products, 1-naphthylamine and N-(1-naphthyl) phthalimide were simultaneously determined in river water by two independent mass spectrometric (MS) methods. These were negative ion MS (NIMS) and programmable temperature vaporizer gas chromatography mass spectrometry (PTV-GC MS) with electron impact ionization (positive ions). Prior to the NIMS analysis, the samples were preconcentrated by solid phase extraction (SPE) of C18 membrane discs. The PTV-GC MS studies were performed without any preconcentration procedure. Selected ion monitoring (SIM) and internal standardization with naphthalene were applied in both methods. The limits of determination (LOD) of NIMS studies were 230, 270 and 260 ng L–1 for naptalam, 1-naphthylamine and N-(1-naphthyl) phthalimide, respectively, with relative standard deviation (RSD) < 1% (n = 5) and of PTV-GC MS 17, 11 and 15 ng L–1 (RSD < 0.7%, n = 5). The LOD, linearity, RSD and time required for these methods are far better than for HPLC analyses.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 23 May 2000 / Revised: 21 August 2000 / Accepted: 29 August 2000
Rights and permissions
About this article
Cite this article
Ghassempour, A., Arshadi, M. & Asghari, F. Determination of the pesticide naptalam and its degradation products by positive and negative ion mass spectrometry. Fresenius J Anal Chem 369, 176–183 (2001). https://doi.org/10.1007/s002160000589
Issue Date:
DOI: https://doi.org/10.1007/s002160000589