Calibration Transfer from Dispersive Instruments to Handheld Spectrometers

Pierna, Juan Antonio Fernández; Vermeulen, Philippe; Lecler, Bernard; Baeten, Vincent; Dardenne, Pierre

doi:10.1366/000370210791414353

Cited by 53 publications

(17 citation statements)

References 14 publications

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“…However, this approach comes with a high cost and overheads, which explains the relatively high purchase prices for these instruments. In some cases using NIR spectroscopy, it is also possible to purchase industry-standard quantitative calibrations and transfer them to a different instrument, 568,569 and calibration transfer methods have been reviewed. 570 Technology-based companies who provide engines to instrument manufacturers can rely on their customer to integrate the product and provide the databases, calibrations, and algorithms required.…”

Section: Applications Development For Portable Spectrometersmentioning

confidence: 99%

Portable Spectroscopy

Crocombe¹

2018

Appl Spectrosc

375

233

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Until very recently, handheld spectrometers were the domain of major analytical and security instrument companies, with turnkey analyzers using spectroscopic techniques from X-ray fluorescence (XRF) for elemental analysis (metals), to Raman, mid-infrared, and near-infrared (NIR) for molecular analysis (mostly organics). However, the past few years have seen rapid changes in this landscape with the introduction of handheld laser-induced breakdown spectroscopy (LIBS), smartphone spectroscopy focusing on medical diagnostics for low-resource areas, commercial engines that a variety of companies can build up into products, hyphenated or dual technology instruments, low-cost visible-shortwave NIR instruments selling directly to the public, and, most recently, portable hyperspectral imaging instruments. Successful handheld instruments are designed to give answers to non-scientist operators; therefore, their developers have put extensive resources into reliable identification algorithms, spectroscopic libraries or databases, and qualitative and quantitative calibrations. As spectroscopic instruments become smaller and lower cost, ''engines'' have emerged, leading to the possibility of being incorporated in consumer devices and smart appliances, part of the Internet of Things (IOT). This review outlines the technologies used in portable spectroscopy, discusses their applications, both qualitative and quantitative, and how instrument developers and vendors have approached giving actionable answers to non-scientists. It outlines concerns on crowdsourced data, especially for heterogeneous samples, and finally looks towards the future in areas like IOT, emerging technologies for instruments, and portable hyphenated and hyperspectral instruments.

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Section: Applications Development For Portable Spectrometersmentioning

confidence: 99%

Portable Spectroscopy

Crocombe¹

2018

Appl Spectrosc

375

233

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“…Moreover, the structural similarities between these instruments and their laboratory/bench top analogues allow for calibration models to be transferred seamlessly from one type to another. [77] It is therefore possible that the future of process monitoring for AD plants lacking sufficient capital for upgrading to state-of-the-art in-line/on-line analysers to some extent can be substituted by such handheld, mobile instruments, e.g. shared between several AD reactors, AD plants, and/or farmers.…”

Section: Handheld and Mobile Process Analysers -Part Of The New Paradmentioning

confidence: 99%

Monitoring of anaerobic digestion processes: A review perspective

Madsen

Holm‐Nielsen

Esbensen

2011

Renewable and Sustainable Energy Reviews

238

122

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The versatility of anaerobic digestion (AD) as an effective technology for solving central challenges met in applied biotechnological industry and society has been documented in numerous publications over the past many decades. Reduction of sludge volume generated from wastewater treatment processes, sanitation of industrial organic waste, and benefits from degassing of manure are a few of the most important applications. Especially, renewable energy production, integrated biorefining concepts, and advanced waste handling are delineated as the major market players for AD that likely will expand rapidly in the near future. The complex, biologically mediated AD events are far from being understood in detail however. Despite decade-long serious academic and industrial research efforts, only a few general rules have been formulated with respect to assessing the state of the process from chemical measurements. Conservative reactor designs have dampened the motivation for employing new technologies, which also constitutes one of the main barriers for successful upgrade of the AD sector with modern process monitoring instrumentation. Recent advances in Process Analytical Technologies (PAT) allow complex bioconversion processes to be monitored and deciphered using e.g. spectroscopic and electrochemical measurement principles. In combination with chemometric multivariate data analysis these emerging process monitoring modalities carry the potential to bring AD process monitoring and control to a new level of reliability and effectiveness. It is shown, how proper involvement of process sampling understanding, Theory of Sampling (TOS), constitutes a critical success factor. We survey the more recent trends within the field of AD monitoring and the powerful PAT/TOS/chemometrics application potential is highlighted. The Danish co-digestion concept, which integrates utilisation of agricultural manure, biomass and industrial organic waste, is used as a case study. We present a first foray for the next research and development perspectives and directions for the AD bioconversion sector.

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“…The proper evaluation of these devices as well as the data transfer from bench-top spectrometers to handheld/ pocket or hyperspectral instruments is a continuous challenge. 3 Furthermore, the prediction of protein content in cereals using NIR spectroscopy has been, for many years, well implemented in the agro-food sector. 4 Classical bench-top NIR instruments are specially dedicated to this task, either at-line or on-line directly in the production chain.…”

Section: Introductionmentioning

confidence: 99%

Performance comparison of bench-top, hyperspectral imaging and pocket near infrared spectrometers: the example of protein quantification in wheat flour

Baeten

Pierna

Vermeulen

et al. 2019

Proceedings of the 18th International Conference on Near Infrared Spectroscopy

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There have been a number of recent developments in NIR technology which may prove to be significant in the near future. The overall objective of this work is to compare the performance of different NIR devices (i.e. bench-top, hyperspectral imaging and pocket NIR spectrometers) for the determination of a classical quality parameter, the protein content. In order to achieve this goal, several studies have been carried out with the different instrumentation on wheat flours (selected as a "homogeneous" product). These studies should determine if NIR hyperspectral imaging and NIR pocket instruments are as efficient as classical NIR bench-top instruments for predicting protein content.

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Calibration Transfer from Dispersive Instruments to Handheld Spectrometers

Cited by 53 publications

References 14 publications

Portable Spectroscopy

Portable Spectroscopy

Monitoring of anaerobic digestion processes: A review perspective

Performance comparison of bench-top, hyperspectral imaging and pocket near infrared spectrometers: the example of protein quantification in wheat flour

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