Comparison of Kjeldahl and the Elemental Analysis Methods for Determination of Nitrogen Content in Raw Natural Rubber

Ning Li Qi; Pu Wang Li; Xian Hai Zeng; Hong Hai Huang; Zi Ming Yang; Xiao Gong

doi:10.4028/www.scientific.net/AMR.815.722

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 815Comparison of Kjeldahl and the Elemental Analysis...

Comparison of Kjeldahl and the Elemental Analysis Methods for Determination of Nitrogen Content in Raw Natural Rubber

Abstract:

The nitrogen in raw natural rubber is mainly derived from crude protein of latex. In this study, the nitrogen content of six kinds of raw natural rubber was analyzed for evaluating Kjeldahl and elemental analysis methods. The nitrogen content ranged from 0.43% to 0.66% for Kjeldahl methods and from 0.45% to 0.75% for elemental analysis method. There was no significant difference between the two methods. The coefficient of variation was below 1%. The data of nitrogen content showed a simple linear correlation (r=0.9937) between the two methods. It was concluded that the elemental analysis method could replace Kjeldahl method in nitrogen analysis of raw natural rubber.

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Progress in Materials Science and Engineering: ICMSE 2013

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Periodical:

Advanced Materials Research (Volume 815)

Pages:

722-726

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.815.722

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Online since:

October 2013

Authors:

Ning Li Qi, Pu Wang Li, Xian Hai Zeng, Hong Hai Huang, Zi Ming Yang, Xiao Gong

Keywords:

Elemental Analysis Method, Kjeldahl Method, Nitrogen, Raw Natural Rubber

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References

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