A fluorescent sensor with high selectivity for Ca2+ against Mg2+ in seawater

Liu, Daying; Qi, Jing; Yu, Zhiqiang; Liu, Xiaoyan; Yang, Renwei; Yang, Haitao; Chang, Hexi; He, Hong; Yang, Guangming

doi:10.1039/c4ay00312h

Cited by 7 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, capillary electrophoresis and fluoremetry have been proposed for determination of Ca 2+ in seawater. 5,6 However, these methods suffer from some problems of expensive instruments and complex operation procedures. Ion-selective electrodes (ISEs) have been proved to provide simple, inexpensive and continuous measurements of Ca 2+ in seawater.…”

mentioning

confidence: 99%

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca²⁺ in Seawater

Yin

Han

Ding

et al. 2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

The detection of Ca 2+ in seawater is of critical importance to understand the growth of marine organisms and the circulation of the ocean ecosystem. This paper reports an integrated screen-printed potentiometric strip based on an all-solid-state Ca 2+ -selective polymeric membrane indicator electrode and an all-solid-state reference electrode for determination of Ca 2+ in seawater, for which the conductive carbon ink-based substrate was pretreated by the physical and electrochemical methods. The proposed pretreatment procedures are found to improve the electro-transfer kinetics, decrease the electron-transfer resistances and increase the double layer capacitance of the screen-printed carbon electrode, which are favorable for constructing the all-solid-state Ca 2+ -ISEs without the additional materials as solid contacts. The proposed screen-printed potentiometric strip shows a stable linear potential response in the range of 1.0 × 10 −5 − 0.1 M with a slope of 26.7 ±1.3 mV/dec (n = 3) in the presence of 0.5 M NaCl. Additionally, the prepared potentiometric strip was used to investigate the vertical distributions of Ca 2+ in seawater, and the results are consistent with those by inductively coupled plasma-optical emission spectrometry. This work indicates that the proposed potentiometric strip can be used as an alternative tool for on-site and rapid detection of Ca 2+ for marine monitoring.

show abstract

mentioning

confidence: 99%

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca²⁺ in Seawater

Yin

Han

Ding

et al. 2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“… Number Name K d , µM Selectivity to Ca 2+ against Mg 2+ , Zn 2+ and Na + λ em , nm pH Stability in cell environment Turn-on sensor (ON)/Turn-off (OFF) Ref. 18 BAPTA sensor family 0.15; ~0.70 a Selective Fluorophore dependent Cytosolic d Stable ON 192 19 – 256 b Selective 488 – – ON 161 20 BCaM 90 Selective 450 Cytosolic d Stable ON 193 21 Bichromophore 14.8 Selective 436 – – ON 194 22 Calix[4]arene 121 b Selective 510 – – ON 162 23 – 2400 Selective 550 8.1 – ON 163 24 PIAQ–AC 5a 0.309 b Not selective 515 – – ON 164 25 PIAQ–AC 5b 0.069 b Not selective 515 – ...…”

Section: Calcium Chemosensorsmentioning

confidence: 99%

“…A selection is shown in Fig. 7a : the binaphthyl derivative 19 161 reported by Wang et al, 20 (BCaM) 193 , bichromophore 21 194 , anthraquinone-modified calix[4]arene 22 162 , the chemosensor 23 163 . Unfortunately, proper selectivity does not guarantee good sensitivity, and the calcium-binding K d of these sensors are not low enough for in vitro investigations.…”

Section: Calcium Chemosensorsmentioning

confidence: 99%

Combining nitric oxide and calcium sensing for the detection of endothelial dysfunction

Andreeva,

Ehlers,

R. C.

et al. 2023

Commun Chem

View full text Add to dashboard Cite

Cardiovascular diseases are the leading cause of death worldwide and are not typically diagnosed until the disease has manifested. Endothelial dysfunction is an early, reversible precursor in the irreversible development of cardiovascular diseases and is characterized by a decrease in nitric oxide production. We believe that more reliable and reproducible methods are necessary for the detection of endothelial dysfunction. Both nitric oxide and calcium play important roles in the endothelial function. Here we review different types of molecular sensors used in biological settings. Next, we review the current nitric oxide and calcium sensors available. Finally, we review methods for using both sensors for the detection of endothelial dysfunction.

show abstract

“…Ion-selective electrodes (ISEs) are a simple, fast, and inexpensive tool for detection of Ca 2+ in seawater, − as compared to the traditional titration method and the expensive instrument-dependent techniques, such as ICP-AES (inductively coupled plasma-atomic emission spectrometry), ICP-MS (inductively coupled plasma mass spectrometry), capillary electrophoresis, and fluorometry. ,− More importantly, ISEs are a promising tool for providing real-time, in situ detection of Ca 2+ in seawater. , It is known that most of the reported Ca 2+ -ISEs are operated at room temperature, and the potentiometric responses conform to the Nernst equation under zero-current conditions. According to the theoretical slope of 29.6 mV/dec at 25 °C, a potential change of 1 mV may lead to an 8% deviation in the activity of Ca 2+ .…”

mentioning

confidence: 99%

Near-Infrared Laser Irradiation-Modulated High-Temperature Solid-Contact Ion-Selective Electrodes: Potentiometric Detection of Ca²⁺ in Seawater

Guo,

Yin,

Ding

et al. 2023

ACS Sens.

View full text Add to dashboard Cite

The high-temperature potentiometry operated by nonisothermal heating is a promising way to break through the traditional potentiometric responses of ion-selective electrodes (ISEs) at room temperature. Herein, a locally heated strategy through near-infrared region (NIR) laser irradiation upon the photothermal mesoporous carbon material placed between the ion-selective membrane and the glassy carbon substrate is introduced to obtain the high-temperature potentiometric performance of a solid-contact Ca 2+ -ISE for detection of Ca 2+ in seawater. Based on the light-to-heat conversion of the mesoporous carbon-based solid contact, the temperature of the solid-contact Ca 2+ -ISE upon continuous NIR laser irradiation can be increased from room temperature to 60−70 °C, and the slope of the electrode is promoted up to about 30% according to the thermodynamic steady-state potentiometric response. The pulsed potentiometric response of the solid-contact Ca 2+ -ISE upon a pulsed NIR laser irradiation of 5 s also shows a linear change as a function of Ca 2+ activities, and the improved slope from 27.1 ± 0.6 to 38.1 ± 0.9 mV/dec can be obtained under dual control of the temperature of the electrode and the transient current induced by the pulsed NIR laser irradiation. As compared to the traditional potentiometric measurement under zero-current conditions at room temperature, the NIR laser-modulated high-temperature potentiometric response provides an alternative way for measurement of the solidcontact ISEs.

show abstract

A fluorescent sensor with high selectivity for Ca2+ against Mg2+ in seawater

Abstract: A new 4-amino-1,8-naphthalimide-based fluorescent sensor with phenyliminodiethoxyacetic acid as a receptor was synthesized and characterized. It can be used for continuous monitoring of the calcium ion concentration in seawater with high selectivity against magnesium ions.

Cited by 7 publications

References 32 publications

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca²⁺ in Seawater

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca²⁺ in Seawater

Combining nitric oxide and calcium sensing for the detection of endothelial dysfunction

Near-Infrared Laser Irradiation-Modulated High-Temperature Solid-Contact Ion-Selective Electrodes: Potentiometric Detection of Ca²⁺ in Seawater

Contact Info

Product

Resources

About

A fluorescent sensor with high selectivity for Ca2+ against Mg2+ in seawater

Abstract: A new 4-amino-1,8-naphthalimide-based fluorescent sensor with phenyliminodiethoxyacetic acid as a receptor was synthesized and characterized. It can be used for continuous monitoring of the calcium ion concentration in seawater with high selectivity against magnesium ions.

Cited by 7 publications

References 32 publications

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca2+ in Seawater

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca2+ in Seawater

Combining nitric oxide and calcium sensing for the detection of endothelial dysfunction

Near-Infrared Laser Irradiation-Modulated High-Temperature Solid-Contact Ion-Selective Electrodes: Potentiometric Detection of Ca2+ in Seawater

Contact Info

Product

Resources

About

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca²⁺ in Seawater

An Integrated Screen-Printed Potentiometric Strip for Determination of Ca²⁺ in Seawater

Near-Infrared Laser Irradiation-Modulated High-Temperature Solid-Contact Ion-Selective Electrodes: Potentiometric Detection of Ca²⁺ in Seawater