Polymeric sensors containing P-dimethylaminocinnamaldehyde: Colorimetric detection of urea nitrate

Kunduru, Konda Reddy; Basu, Arijit; Abtew, Ester; Tsach, Tsadok; Domb, Abraham J.

doi:10.1016/j.snb.2016.07.057

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…The small physical size of optical fiber allows the development of very small and flexible fiber sensors, and enables the remote in-situ sensing of species in difficult or hazardous environments [ 6 , 7 ]. Optical fiber sensors based on colorimetric technique [ 8 , 9 ] and evanescent wave absorption [ 10 ] for in-situ nitrate detection in water have been proposed. These methods can detect the nitrate concentration in the range from ppb to ppm, but the measurement response time is some tens of minutes.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of the Fiber Laser Sensor System Based on Etched-Bragg Grating Sensing Probe for Determination of the Low Nitrate Concentration in Water

Pham

Bui

Le³

et al. 2016

Sensors

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The necessity of environmental protection has stimulated the development of many kinds of methods allowing the determination of different pollutants in the natural environment, including methods for determining nitrate in source water. In this paper, the characteristics of an etched fiber Bragg grating (e-FBG) sensing probe—which integrated in fiber laser structure—are studied by numerical simulation and experiment. The proposed sensor is demonstrated for determination of the low nitrate concentration in a water environment. Experimental results show that this sensor could determine nitrate in water samples at a low concentration range of 0–80 ppm with good repeatability, rapid response, and average sensitivity of 3.5 × 10−3 nm/ppm with the detection limit of 3 ppm. The e-FBG sensing probe integrated in fiber laser demonstrates many advantages, such as a high resolution for wavelength shift identification, high optical signal-to-noise ratio (OSNR of 40 dB), narrow bandwidth of 0.02 nm that enhanced accuracy and precision of wavelength peak measurement, and capability for optical remote sensing. The obtained results suggested that the proposed e-FBG sensor has a large potential for the determination of low nitrate concentrations in water in outdoor field work.

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Section: Introductionmentioning

confidence: 99%

Characteristics of the Fiber Laser Sensor System Based on Etched-Bragg Grating Sensing Probe for Determination of the Low Nitrate Concentration in Water

Pham

Bui

Le³

et al. 2016

Sensors

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“…From the research on optical detection of IEs from 2010 to 2021 ( Figure ), it can be found that the detection limits of hypochlorite, [ 41–57 ] perchlorate, [ 58–60 ] peroxide, [ 61–77 ] nitrate, [ 78–85 ] and nitrite [ 86–99 ] based on solution reaction are mostly between 10 −5 and 10 −9 M , and it is difficult to achieve higher sensitivity detection by merely optical probes designing. By combining the sensing probes with paper‐based [ 19,100–103 ] and hydrogel‐based [ 28,104–106 ] substrate and optical microscope device, the detection sensitivity has been greatly improved in 2020 and 2021 reaching a level of 10 −15 M. To better improve the detecting sensitivity, optical artificial olfactory system takes chemical sensor array as the detection modules of different IEs, as well as considering the automatic analyte collection with airflow and the ultrasensitive ecognition of optical signals has been explored from the design of different components.…”

Section: From Optical Chemical Sensor To Artificial Olfactory Systemmentioning

confidence: 99%

“…Researches on optical detection of hypochlorite, [ 41–57 ] perchlorate, [ 58–60 ] peroxide, [ 61–77 ] nitrate, [ 78–85 ] and nitrite [ 86–99 ] IEs from 2010 to 2021 and sensors with paper‐based [ 19,100–103 ] and hydrogel‐based [ 28,104–106 ] substrate and optical microscope device. The first Figure from left on bottom reproduced with permission.…”

Section: From Optical Chemical Sensor To Artificial Olfactory Systemmentioning

confidence: 99%

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A March to Shape Optical Artificial Olfactory System toward Ultrasensitive Detection of Improvised Explosives

Zhang

et al. 2022

Advanced Photonics Research

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“…A comparative study on urea hydrolysis when urease is in solution or immobilized on a solid support is of interest, with the aim of determining urease stability and reusability. Among the samples applied, selective urea nitrate in solution was performed in a polymer matrix composed of poly(acrylamide) hydrogel [41], and the employment of portable, low-cost devices for in situ determination of urea has already been addressed in milk [42] and blood [43] matrices.…”

Section: Introductionmentioning

confidence: 99%

NQS-Doped PDMS Solid Sensor: From Water Matrix to Urine Enzymatic Application

et al. 2021

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The development of in situ analytical devices has gained outstanding scientific interest. A solid sensing membrane composed of 1,2-naphthoquinone-4-sulfonate (NQS) derivatizing reagent embedded into a polymeric polydimethylsiloxane (PDMS) composite was proposed for in situ ammonium (NH4+) and urea (NH2CONH2) analysis in water and urine samples, respectively. Satisfactory strategies were also applied for urease-catalyzed hydrolysis of urea, either in solution or glass-supported urease immobilization. Using diffuse reflectance measurements combined with digital image processing of color intensity (RGB coordinates), qualitative and quantitative analyte detection was assessed after the colorimetric reaction took place inside the sensing membrane. A suitable linear relationship was found between the sensor response and analyte concentration, and the results were validated by a thymol-PDMS-based sensor based on the Berthelot reaction. The suggested sensing device offers advantages such as rapidity, versatility, portability, and employment of non-toxic reagents that facilitate in situ analysis in an energy-efficient manner.

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Polymeric sensors containing P-dimethylaminocinnamaldehyde: Colorimetric detection of urea nitrate

Cited by 10 publications

References 14 publications

Characteristics of the Fiber Laser Sensor System Based on Etched-Bragg Grating Sensing Probe for Determination of the Low Nitrate Concentration in Water

Characteristics of the Fiber Laser Sensor System Based on Etched-Bragg Grating Sensing Probe for Determination of the Low Nitrate Concentration in Water

A March to Shape Optical Artificial Olfactory System toward Ultrasensitive Detection of Improvised Explosives

NQS-Doped PDMS Solid Sensor: From Water Matrix to Urine Enzymatic Application

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