Diffuse reflectance spectroscopic analysis of barium sulfate as a reflection standard within 173–2500 nm: From pure to sintered form

Poh, Abdul Halim and Jamaludin, Mohd Fadzil and Fadzallah, Iman Aris and Nik Ibrahim, Nik Muhd Jazli and Yusof, Farazila and Adikan, Faisal Rafiq Mahamd and Moghavvemi, Mahmoud (2019) Diffuse reflectance spectroscopic analysis of barium sulfate as a reflection standard within 173–2500 nm: From pure to sintered form. Journal of Near Infrared Spectroscopy, 27 (6). pp. 393-401. ISSN 0967-0335

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Official URL: https://doi.org/10.1177/0967033519868241

Abstract

The use of barium sulfate (BaSO4) as a low-cost reflectance standard has been documented for some time. In its pure salt form, the optical characteristics do have advantages compared to laboratory-grade sintered polytetrafluoroethylene (PTFE). However, its practical use has little advantage against the stability of PTFE. In this paper, a process of producing pelletized BaSO4, and characterization of its optical reflectance properties is reported. In its sintered form, data-driven analysis shows that BaSO4 is a commendable low-cost, high-reflection and a high-consistency material. The current sintered forms, though crude, registers a relatively stable texture to withstand minor mechanical stress, while having up to an average 92% reflectivity across the UV-VIS-NIR range (173–2500 nm) compared to a PTFE reflection standard. © The Author(s) 2019.

Item Type: Article
Uncontrolled Keywords: Reflectance standard; barium sulfate; ultraviolet; visible; near infrared; PTFE
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 12 Feb 2020 01:25
Last Modified: 12 Feb 2020 01:25
URI: http://eprints.um.edu.my/id/eprint/23750

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