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sklademVydáno: 2006-10-31
BS ISO 9028:2006 Rubber. Dissolution by acid digestion

BS ISO 9028:2006

Rubber. Dissolution by acid digestion

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Označení normy:BS ISO 9028:2006
Počet stran:12
Vydáno:2006-10-31
ISBN:0 580 49438 7
Status:Standard
Popis

BS ISO 9028:2006


This standard BS ISO 9028:2006 Rubber. Dissolution by acid digestion is classified in these ICS categories:
  • 83.060 Rubber

This International Standard specifies methods for disintegration of raw rubber and rubber products by nitric acid or by a mixture of nitric and sulfuric acids. This International Standard is generally applicable, but is essential where potentially volatile elements or combinations of elements are present (i.e. As, Sb, Bi, and Zn + Cl, Cu + Cl and Pb + Cl). It is useful in these cases because lower temperatures are involved which result in less loss by volatilization.

These methods will be used in order to produce solutions for the determination of metals, for example as traces, if the application of ISO 247 is not advisable. These methods prevent loss of volatile metal derivatives and the formation of insoluble metal silicates (which may result during dry ashing of halogenated rubbers containing zinc or of rubbers filled with silica).