Infrared sensors for environmental and biomedical applications

Park, J.; Hodges, Kimari L.; Tumuluri, U.; Zaki, Ahmad; Dussor, J. C.; Daunis, T.; Clark, K. P.; Roodenko, Katy

doi:10.1117/12.2583757

Cited by 5 publications

(3 citation statements)

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“…Assays determine the qualitative and quantitative nature of a sample through its changes in the vibrational state of the molecular bonds that compose the material (Gowen et al, 2015). Due to its quick and straightforward features, infrared spectroscopy has potential for the real-time monitoring and characterization of pollutants in wastewater (Park et al, 2021). The gradual development of IR spectrometers has enabled this technology to perform insitu tests with minimal preparation.…”

Section: Spectroscopic Methods For Polyfluoroalkyl and Perfluoroalkyl...mentioning

confidence: 99%

“…The application of infrared spectroscopy for the detection of PFASs and related contaminants in drinking water have been explored recently. A mixed qualitative and quantitative approach is provided as an example by Park et al (2021), using regression models to correlate obtained spectrums with PFAS as well as assessing the effect of salinity, pH and other water quality parameters in a multivariate model. The obtention of PFA spectra is often not possible by conventional readings, and a mathematical treatment of spectra is needed to overcome the complications in the reduced detection rate of non-treated wastewater samples (Carreres-Prieto et al, 2020).…”

Section: Spectroscopic Methods For Polyfluoroalkyl and Perfluoroalkyl...mentioning

confidence: 99%

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Detection and Tertiary Treatment Technologies of Poly-and Perfluoroalkyl Substances in Wastewater Treatment Plants

Araújo

Rodríguez-Hernández

González-González

et al. 2022

Front. Environ. Sci.

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PFAS are a very diverse group of anthropogenic chemicals used in various consumer and industrial products. The properties that characterize are their low degradability as well as their resistance to water, oil and heat. This results in their high persistence in the environment and bioaccumulation in different organisms, causing many adverse effects on the environment as well as in human health. Some of their effects remain unknown to this day. As there are thousands of registered PFAS, it is difficult to apply traditional technologies for an efficient removal and detection for all. This has made it difficult for wastewater treatment plants to remove or degrade PFAS before discharging the effluents into the environment. Also, monitoring these contaminants depends mostly on chromatography-based methods, which require expensive equipment and consumables, making it difficult to detect PFAS in the environment. The detection of PFAS in the environment, and the development of technologies to be implemented in tertiary treatment of wastewater treatment plants are topics of high concern. This study focuses on analyzing and discussing the mechanisms of occurrence, migration, transformation, and fate of PFAS in the environment, as well the main adverse effects in the environment and human health. The following work reviews the recent advances in the development of PFAS detection technologies (biosensors, electrochemical sensors, microfluidic devices), and removal/degradation methods (electrochemical degradation, enzymatic transformation, advanced oxidation, photocatalytic degradation). Understanding the risks to public health and identifying the routes of production, transportation, exposure to PFAS is extremely important to implement regulations for the detection and removal of PFAS in wastewater and the environment.

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Section: Spectroscopic Methods For Polyfluoroalkyl and Perfluoroalkyl...mentioning

confidence: 99%

Section: Spectroscopic Methods For Polyfluoroalkyl and Perfluoroalkyl...mentioning

confidence: 99%

Detection and Tertiary Treatment Technologies of Poly-and Perfluoroalkyl Substances in Wastewater Treatment Plants

Araújo

Rodríguez-Hernández

González-González

et al. 2022

Front. Environ. Sci.

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“…To overcome the effects of high absorption of mid-IR radiation by water, which limits the usefulness of transmission-based absorption spectroscopy, Max-IR Labs employs a fiber-based evanescent wave absorption sensor technique. 1,2 A multimode silver halide optical fiber with high transmission in the mid-IR range is used to carry the IR signal from source to detector through the analyte solution. Absorption of the evanescent wave, within the volume approximately 3 µm around the fiber, generates the measurement signal.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared spectroscopy-based sensors for inline water and wastewater analysis

Daunis,

Molyneux,

Dussor

et al. 2024

Optical Fibers and Sensors for Medical Diagnostics, Treatment, and Environmental Applications XXIV

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We report on the development of mid-infrared spectroscopy-based sensors for inline water and wastewater analysis. Midinfrared spectroscopy is a powerful tool for chemical identification and quantification. To overcome the limitations of the technique imposed by rapid extinction of the infrared signal in water, we have developed pre-concentration techniques that achieve beyond four orders of magnitude enhancement of measurement sensitivity, along with enhanced selectivity, for analytes. Applications include monitoring of nutrients and metabolites in bioreactor systems for wastewater treatment and industrial processes (e.g. biofuel production), in-line process control in chemical manufacturing, and rapid on-site screening of contaminants in environmental samples for assessment and remediation of environmental contamination sites.

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Dual mode fiber optic high-performance sensor designs for ultra-low concentrations in NIR region

Maurya

Verma

2023

Opt Quant Electron

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Infrared sensors for environmental and biomedical applications

Cited by 5 publications

References 0 publications

Detection and Tertiary Treatment Technologies of Poly-and Perfluoroalkyl Substances in Wastewater Treatment Plants

Detection and Tertiary Treatment Technologies of Poly-and Perfluoroalkyl Substances in Wastewater Treatment Plants

Mid-infrared spectroscopy-based sensors for inline water and wastewater analysis

Dual mode fiber optic high-performance sensor designs for ultra-low concentrations in NIR region

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