A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

Petruci, João Flávio da Silveira; Wilk, A.; Cardoso, Arnaldo Alves; Mizaikoff, Boris

doi:10.1038/s41598-018-23961-8

Cited by 13 publications

(7 citation statements)

References 28 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A direct application of the approach is in the TG-FT-IR experiments shown in this work. Moreover, analysis of gaseous mixture via combination of quantum cascade lasers with substrate-integrated hollow waveguides is experiencing extensive applications in materials science, environmental monitoring, and biomedical diagnosis. − SASS might be applicable to extraction of FT-IR spectra of different components from mixtures. Additionally, SASS may also be useful in various advanced spectroscopic experiments such as time-resolved spectroscopy, NMR-DOSY, and so forth.…”

Section: Discussionmentioning

confidence: 99%

Sample–Sample Correlation Asynchronous Spectroscopic Method Coupled with Multivariate Curve Resolution-Alternating Least Squares To Analyze Challenging Bilinear Data

Guo

Zhang

et al. 2019

Anal. Chem.

View full text Add to dashboard Cite

An approach to construct a secondary asynchronous spectrum via sample–sample correlation (SASS) is proposed to analyze bilinear data from hyphenated spectroscopic experiments. In SASS, bilinear data is used to construct a series of two-dimensional (2D) sample–sample correlation spectra. Then a vertical slice is extracted from each 2D sample–sample correlation spectrum so that a secondary 2D asynchronous spectrum is constructed via these slices. The advantage of SASS is demonstrated by a model system with the following challenging situations: (1) Temporal profiles of different components severely overlap, making spectra of pure components difficult to directly obtain from either original bilinear data or multivariate curve resolution-alternating least squares (MCR-ALS) with non-negativity and unimodality constraints. (2) Every peak in the spectra of the eluted samples contains contributions from at least two components. Hence, two-dimensional correlation spectroscopy (2D-COS) and n-dimensional (nD) asynchronous spectroscopic method developed in our previous work, which previously worked so well, are now invalid. SASS managed to reveal different groups of systematic absences of cross peaks (SACPs) that reflect the lack of spectral contributions of different components at different regions in the second asynchronous spectrum. Spectra of different components can still be faithfully retrieved via MCR-ALS calculation using constraints revealed by different groups of SACPs. The results demonstrate that implicit but intrinsic information revealed by SASS is indispensable in solving challenging bilinear data as the model system. We applied SASS on two real-world examples from thermogravimetry-Fourier transform infrared spectroscopy (TG-FT-IR) experiments of mixtures (H2O/HOD/D2O and H2O/isopropanol/pyridine). FT-IR spectra of different components were successfully recovered. Moreover, FT-IR spectrum of HOD, which is difficult to obtain, was successfully extracted. SASS can be applied in the analysis of gaseous mixtures from TG-FT-IR experiment and a combination of quantum cascade lasers with substrate-integrated hollow waveguides in environmental monitoring and biomedical diagnosis. Furthermore, SASS is also useful in various advanced hyphenated spectroscopic experiments.

show abstract

Section: Discussionmentioning

confidence: 99%

Sample–Sample Correlation Asynchronous Spectroscopic Method Coupled with Multivariate Curve Resolution-Alternating Least Squares To Analyze Challenging Bilinear Data

Guo

Zhang

et al. 2019

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…These overcome the drawbacks of electrochemical techniques. Thus, in [70] the innovative, portable mid-infrared chemical sensor system for quantifying gaseous N 2 O via coupling a substrate-integrated hollow waveguide (iHWG), simultaneously serving as highly miniaturized mid-infrared photon conduit and gas cell to a custom-made preconcentrator, was developed. The N 2 O was collected on a solid sorbent material placed in the preconcentrator, and after being released by thermal desorption was detected with an iHWG-MIR sensor utilizing a compact Fourier transform infrared (FTIR) spectrometer with a DL of 5 ppbv.…”

Section: Total and Mineral Nitrogenmentioning

confidence: 99%

Recent Advances in Chemical Sensors for Soil Analysis: A Review

et al. 2022

View full text Add to dashboard Cite

The continuously rising interest in chemical sensors’ applications in environmental monitoring, for soil analysis in particular, is owed to the sufficient sensitivity and selectivity of these analytical devices, their low costs, their simple measurement setups, and the possibility to perform online and in-field analyses with them. In this review the recent advances in chemical sensors for soil analysis are summarized. The working principles of chemical sensors involved in soil analysis; their benefits and drawbacks; and select applications of both the single selective sensors and multisensor systems for assessments of main plant nutrition components, pollutants, and other important soil parameters (pH, moisture content, salinity, exhaled gases, etc.) of the past two decades with a focus on the last 5 years (from 2017 to 2021) are overviewed.

show abstract

“…By taking advantage of a adsorption/thermal desorption step and a 150 mm straight-line aluminum iHWG, a remarkable detection limit of 5 ppb was achieved, which enabled realworld sample monitoring as the background levels of atmospheric N 2 O is ∼330 ppbv. 57 Besides, Petruci et al 39 proposed an innovative mid-infrared chemical sensor platform for the in situ, real-time, and simultaneous quantification of all relevant nitrogen-based gases (i.e., NO, NO 2 , and N 2 O) by combining a compact FTIR spectrometer with 150 mm straight iHWG as a miniaturized gas cell. The optical platform enabled limits of detection of 10, 1, and 0.5 ppmv of NO, NO 2 , and N 2 O, respectively.…”

Section: Environmental and Agricultural Applicationsmentioning

confidence: 99%

“…A hyphenated preconcentrator-IR-iHWG sensor system was developed for N 2 O sensing using the strong absorption band with boundaries from 2222 to 2177 cm –1 . By taking advantage of a adsorption/thermal desorption step and a 150 mm straight-line aluminum iHWG, a remarkable detection limit of 5 ppb was achieved, which enabled real-world sample monitoring as the background levels of atmospheric N 2 O is ∼330 ppbv . Besides, Petruci et al proposed an innovative mid-infrared chemical sensor platform for the in situ, real-time, and simultaneous quantification of all relevant nitrogen-based gases (i.e., NO, NO 2 , and N 2 O) by combining a compact FTIR spectrometer with 150 mm straight iHWG as a miniaturized gas cell.…”

Section: Applicationsmentioning

confidence: 99%

From Light Pipes to Substrate-Integrated Hollow Waveguides for Gas Sensing: A Review

Barreto

Kokoric²,

Petruci

et al. 2021

ACS Meas. Sci. Au

Self Cite

View full text Add to dashboard Cite

Absorption-based spectroscopy in the mid-infrared (MIR) spectral range (i.e., 2.5–25 μm) is an excellent choice for directly sensing trace gas analytes providing discriminatory molecular information due to inherently specific fundamental vibrational, rovibrational, and rotational transitions. Complimentarily, the miniaturization of optical components has aided the utility of optical sensing techniques in a wide variety of application scenarios that demand compact, portable, easy-to-use, and robust analytical platforms yet providing suitable accuracy, sensitivity, and selectivity. While MIR sensing technologies have clearly benefitted from the development of advanced on-chip light sources such as quantum cascade and interband cascade lasers and equally small MIR detectors, less attention has been paid to the development of modular/tailored waveguide technologies reproducibly and reliably interfacing photons with sample molecules in a compact format. In this context, the first generation of a new type of hollow waveguides gas cellsthe so-called substrate-integrated hollow waveguides (iHWG)with unprecedented compact dimensions published by the research team of Mizaikoff and collaborators has led to a paradigm change in optical transducer technology for gas sensors. Features of iHWGs included an adaptable (i.e., designable) well-defined optical path length via the integration of meandered hollow waveguide structures at virtually any desired dimension and geometry into an otherwise planar substrate, a high degree of robustness, compactness, and cost-effectiveness in fabrication. Moreover, only a few hundred microliters of gas samples are required for analysis, resulting in short sample transient times facilitating a real-time monitoring of gaseous species in virtually any concentration range. In this review, we give an overview of recent advancements and achievements since their introduction eight years ago, focusing on the development of iHWG-based mid-infrared sensor technologies. Highlighted applications ranging from clinical diagnostics to environmental and industrial monitoring scenarios will be contrasted by future trends, challenges, and opportunities for the development of next-generation portable optical gas-sensing platforms that take advantage of a modular and tailorable device design.

show abstract

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

Cited by 13 publications

References 28 publications

Sample–Sample Correlation Asynchronous Spectroscopic Method Coupled with Multivariate Curve Resolution-Alternating Least Squares To Analyze Challenging Bilinear Data

Sample–Sample Correlation Asynchronous Spectroscopic Method Coupled with Multivariate Curve Resolution-Alternating Least Squares To Analyze Challenging Bilinear Data

Recent Advances in Chemical Sensors for Soil Analysis: A Review

From Light Pipes to Substrate-Integrated Hollow Waveguides for Gas Sensing: A Review

Contact Info

Product

Resources

About