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Purity Determination and Uncertainty Evaluation of Acrylonitrile by Gas Chromatography and Differential Scanning Calorimetry

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Abstract

Methods of gas chromatography and differential scanning calorimetry (DSC) were used to determine the purity of acrylonitrile. In the method of gas chromatography, the organic impurities were determined using benzene as external standard, the contents of moisture were determined using the Karl Fisher method, and the inorganic elements were determined using ICP-MS method. The purity determined using gas chromatography was 99.32% (g/g) with an extended uncertainty of 0.42% (k = 2), and that determined using DSC method was 98.88% (g/g) with an extended uncertainty of 1.07% (k = 2). The uncertainty evaluation of purity demonstrated that the accuracy of the gas chromatography method is better than that of DSC method.

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Acknowledgements

This work was supported by the Science and Technology Plan Projects of General Administration of Quality Supervision, Inspection and Quarantine (2014QK114). The authors would like to thank Jinan Deyang Special Gas Co., LTD for their support during this study.

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Authors and Affiliations

  1. Shandong Institute of Metrology, No. 28, East Qianfoshan Road, Jinan, 250014, Shandong Province, People’s Republic of China

    Sisi Xu, Bo Guo, Feng Sui, Aihua Xu, Peng Zheng, Sen Zhang, Qingbo Huang, Fengli Li, Yun Wang, Yunxin He & Qing Yu

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  1. Sisi Xu
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  2. Bo Guo
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  3. Feng Sui
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  11. Qing Yu
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Correspondence to Sisi Xu.

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Xu, S., Guo, B., Sui, F. et al. Purity Determination and Uncertainty Evaluation of Acrylonitrile by Gas Chromatography and Differential Scanning Calorimetry. MAPAN 33, 253–260 (2018). https://doi.org/10.1007/s12647-018-0262-8

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  • DOI: https://doi.org/10.1007/s12647-018-0262-8

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