Novel structured light-addressable potentiometric sensor array based on PVC membrane for determination of heavy metals

Ha, Da; Hu, Ning; Wu, Chunsheng; Kirsanov, Dmitry; Legin, Andrey; Khaydukova, Maria; Wang, P.

doi:10.1016/j.snb.2012.06.032

Cited by 38 publications

(15 citation statements)

References 15 publications

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“…The deposition of chalcogenide glass films [65,66,67,68,69] can detect metal ions such as Pb 2+ , Fe 3+ , Cd 2+ and Cr 6+ . The detection of inorganic salt ions (e.g., K + , Ca 2+ , Na + , Mg 2+ , Zn 2+ , Li + , NO 3 − , CO 3 2− , and SO 4 2− ) can be achieved by depositing polymer membranes carrying ionophores such as PVC membranes [53,70,71,72,73,74,75,76], silicone rubber membranes [77,78,79,80,81] and photocurable membranes [82]. Immobilization of enzymes [83,84,85,86,87,88,89,90], antibodies [23,91,92] or DNA [93,94,95,96] on the sensing layer enables the detection of biomolecules such as glucose, urea, penicillin G, antigens, immunoglobulins G (IgG) and target DNA, etc.…”

Section: Measurement System Set-upmentioning

confidence: 99%

Recent Developments of High-Resolution Chemical Imaging Systems Based on Light-Addressable Potentiometric Sensors (LAPSs)

Liang

Qiu

Gan

et al. 2019

Sensors

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A light-addressable potentiometric sensor (LAPS) is a semiconductor electrochemical sensor based on the field-effect which detects the variation of the Nernst potential on the sensor surface, and the measurement area is defined by illumination. Thanks to its light-addressability feature, an LAPS-based chemical imaging sensor system can be developed, which can visualize the two-dimensional distribution of chemical species on the sensor surface. This sensor system has been used for the analysis of reactions and diffusions in various biochemical samples. In this review, the LAPS system set-up, including the sensor construction, sensing and substrate materials, modulated light and various measurement modes of the sensor systems are described. The recently developed technologies and the affecting factors, especially regarding the spatial resolution and temporal resolution are discussed and summarized, and the advantages and limitations of these technologies are illustrated. Finally, the further applications of LAPS-based chemical imaging sensors are discussed, where the combination with microfluidic devices is promising.

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Section: Measurement System Set-upmentioning

confidence: 99%

Recent Developments of High-Resolution Chemical Imaging Systems Based on Light-Addressable Potentiometric Sensors (LAPSs)

Liang

Qiu

Gan

et al. 2019

Sensors

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show abstract

“…Ha et al [79] introduced a multi-sensor array based on light addressable potentiometric sensor (LAPS) with polyvinyl chloride (PVC) membrane modification for determination of heavy metal cations. Cross-talk was decreased by heavily doping part of the silicon substrate with boron and fabrication thick oxide formation on its surface.…”

Section: Water Environment Monitoringmentioning

confidence: 99%

Electronic Nose and Electronic Tongue

Zou

Wan

Zhang

et al. 2015

Bioinspired Smell and Taste Sensors

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“…LAPS can be used for many biochemical measurements [6–10]. Because of its powerful capacity of light addressing, LAPS is also applied to multi‐channel measurement [11, 12], and chemical imaging sensor [13, 14].…”

Section: Introductionmentioning

confidence: 99%