SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 44 ›› Issue (4): 466-473.DOI: 10.1016/j.cjche.2021.08.019

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Theoretical and experimental assessment of a novel method to establish the complete measurement range of the calorimeter and its limit of detection and quantification

Vesna Krsti?   

  1. af005 Mining and Metallurgy Institute Bor, Zeleni Bulevar 35, 19210 Bor, Serbia;
    af010. University of Belgrade, Technical Faculty Bor, VJ 12, 19210 Bor, Republik of Serbia
  • Received:2020-03-04 Revised:2021-07-23 Online:2022-06-18 Published:2022-04-28
  • Contact: Vesna Krsti?,E-mail:vesna.krstic@irmbor.co.rs
  • Supported by:
    The authors gratefully acknowledge the funding by the Ministry of Education and Science, the Republic of Serbia for Registration (No. 451-03-68/2022-14/200052). The author is also grateful to Marjan Gorišek, Jim Fleming and Prof. Nicola Bolton for their overall support and generosity.

Theoretical and experimental assessment of a novel method to establish the complete measurement range of the calorimeter and its limit of detection and quantification

Vesna Krsti?   

  1. af005 Mining and Metallurgy Institute Bor, Zeleni Bulevar 35, 19210 Bor, Serbia;
    af010. University of Belgrade, Technical Faculty Bor, VJ 12, 19210 Bor, Republik of Serbia
  • 通讯作者: Vesna Krsti?,E-mail:vesna.krstic@irmbor.co.rs
  • 基金资助:
    The authors gratefully acknowledge the funding by the Ministry of Education and Science, the Republic of Serbia for Registration (No. 451-03-68/2022-14/200052). The author is also grateful to Marjan Gorišek, Jim Fleming and Prof. Nicola Bolton for their overall support and generosity.

Abstract: For determining the accuracy of a calorimeter over the instrument’s entire measuring range, a novel method has been established. For this new approach, (a) benzoic acid (C6H5CO2H) as a certified reference material (CRM), (b) SiO2 and (c) a mixture of CRM benzoic acid and SiO2 have been used. To illustrate the essential difference between 1) the novel analytical method for control of the entire measurement range and 2) the calorimeter calibration, both applications of benzoic acid (BA) have been demonstrated. An experimental result showed that BA was successfully used to check the whole calorimeter measurement range. The results also showed that the same new method was successfully applied to determine the limit of detection and quantification. A new instrument testing process and a new measurement technique have thus been established. In this way, the cost of using CRM to control the accuracy of measuring the entire measuring range of the calorimeter, as shown in this paper, is minimized. The requirements of the ISO/IEC 17025:2017 standard are satisfied. ISO/IEC 17025:2017, together with ISO 9001:2015 (quality management systems), ISO 14001:2015 (relate to environmental protection) and ISO 45001:2018 (occupational safety), constitute an integrated quality system by which a testing laboratory may also accredit.

Key words: Benzoic acid, Certified reference material, The limit of detection/quantification, Measurement range, Quality control, Calorimeter, Environmental protection

摘要: For determining the accuracy of a calorimeter over the instrument’s entire measuring range, a novel method has been established. For this new approach, (a) benzoic acid (C6H5CO2H) as a certified reference material (CRM), (b) SiO2 and (c) a mixture of CRM benzoic acid and SiO2 have been used. To illustrate the essential difference between 1) the novel analytical method for control of the entire measurement range and 2) the calorimeter calibration, both applications of benzoic acid (BA) have been demonstrated. An experimental result showed that BA was successfully used to check the whole calorimeter measurement range. The results also showed that the same new method was successfully applied to determine the limit of detection and quantification. A new instrument testing process and a new measurement technique have thus been established. In this way, the cost of using CRM to control the accuracy of measuring the entire measuring range of the calorimeter, as shown in this paper, is minimized. The requirements of the ISO/IEC 17025:2017 standard are satisfied. ISO/IEC 17025:2017, together with ISO 9001:2015 (quality management systems), ISO 14001:2015 (relate to environmental protection) and ISO 45001:2018 (occupational safety), constitute an integrated quality system by which a testing laboratory may also accredit.

关键词: Benzoic acid, Certified reference material, The limit of detection/quantification, Measurement range, Quality control, Calorimeter, Environmental protection