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Title: Gas chromatographic determination of 1.8-naphthalimide, N-hydroxy-1.8- naphthalimide (N,N-naphthaloylhydroxylamine) and the sodium salt of N-hydroxy-1.8-naphthalimide

Author: Melcher, Eckhard; Green, Frederick;

Date: 2003

Source: Thirty-fourth annual meeting of the International Research Group on Wood Preservation : 2003 May 18-23, Brisbane, Queensland, Australia. Stockholm, Sweden : IRG Secretariat, 2003: 11 p.

Publication Series: Miscellaneous Publication

Description: A number of naphthalimide (NI) derivatives are used as efficient laser dyes, in medicine or in transmission electron microscopy. Only N,N- naphthaloylhydroxylamine (NHA) has been shown to be an effective wood preservative against wood decay fungi and termite damage. However, limited information is available concerning the analytical detection of Nl-derivatives in treated timber. There is a clear need for the analytical characterisation; e.g. with regard to the penetration depth or the assessment of retention after leaching. This paper describes the development of a gas chromatographic method for determination of NI and their derivatives in timber. These investigations were carried out by means of direct thermal desorption-gas chromatography-mass spectrometry (TD-GS-MS) using the pure substances in solution, as well as direct analysis of treated southern yellow pine (SYP). It was shown that the identification of NHA in treated SYP is possible using this analytical technique. Furthermore first evidence is given for determining quantitative data. Surprisingly, the chromatograms and especially mass spectra obtained for NHA and the sodium salt of NHA are identical to the mass spectra of NI. The first results show that TD-GC-MS can be an option in determining the retention levels of NI and their derivatives in wood.

Keywords: N-hydroxy-1.8-naphthalimide, N, N-naphthaloylhydroxylamine, gas chromatography, wood preservative

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Melcher, Eckhard; Green, Frederick 2003. Gas chromatographic determination of 1.8-naphthalimide, N-hydroxy-1.8- naphthalimide (N,N-naphthaloylhydroxylamine) and the sodium salt of N-hydroxy-1.8-naphthalimide. Thirty-fourth annual meeting of the International Research Group on Wood Preservation : 2003 May 18-23, Brisbane, Queensland, Australia. Stockholm, Sweden : IRG Secretariat, 2003: 11 p.

 


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