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Textile Research Journal
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The Determination of Phosphorus in Fire-Resistant Textiles by Cool-Flame Emission Spectroscopy

W.N. Elliott

Quality Assurance Directorate (Materials), Royal Arsenal East, London SE18 6TD, UK

C. Heathcote

Quality Assurance Directorate (Materials), Royal Arsenal East, London SE18 6TD, UK

R.A. Mostyn

Quality Assurance Directorate (Materials), Royal Arsenal East, London SE18 6TD, UK

The phosphorus content of fire-resistant textiles is determined by measurement of the emission intensity at 528 nm of the HPO molecular species, produced by aspiration of an aqueous sample extract into a cool hydrogen-nitrogen diffusion flame. In the case of durable flame-retardant agents, a preliminary fusion of the textile with potassium hydroxide is necessary, followed by an ion-exchange treatment of the extract; non-durable flame-retardants are determined directly, after water extraction of the material and ion-exchange separation.

Key Words: Fire-resistant textiles. Ftame-retardants—durable • non-durable. Phosphorus • phosphorus compounds. Spectros copy. Flame emission. Molecular emission. Cool-flame. Ion-exchange. Potassium hydroxide fusion.

Textile Research Journal, Vol. 42, No. 2, 86-88 (1972)
DOI: 10.1177/004051757204200203
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