A Dip-and-Read Test Strip for the Determination of Mercury(II) Ion in Aqueous Samples Based on Urease Activity Inhibition

Shi, Guoqing; Jiang, Guibin

doi:10.2116/analsci.18.1215

Cited by 27 publications

(12 citation statements)

References 27 publications

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“…As the standard of Hg 2+ ions in the industrial waste water is 50 μg/L (50 ppb), TPE-S can be utilized to monitor the concentration of Hg 2+ ions in the waste water for on-site inspections. Actually, some wonderful works of strip based platforms had reported for the determination of mercury ions with high sensitivity by using enzyme, DNA or oligonucleotides 31 32 33 . However, since the biomacromolecules were fragile, the strips were unstable for storage and too sensitive to heat, UV radiation, strong acid and base, in addition to their expensive cost, complicated fabrication, and boring test procedure.…”

Section: Resultsmentioning

confidence: 99%

A relay strategy for the mercury (II) chemodosimeter with ultra-sensitivity as test strips

Ruan

Lǐ

et al. 2015

Sci Rep

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A relay strategy has been proposed to design a new Hg2+ chemodosimeter (TPE-S), by coupling Hg2+-promoted deprotection reaction with ketone-enol isomerization, realizing the multistage amplifying effect. Changes in both of color and fluorescence could occur immediately, and TPE-S displayed high selectivity for Hg2+, other metal ions (Ag+, Fe3+, Cu2+, Pb2+, Co2+, Cr3+, Al3+, Cd2+, Mg2+, Mn2+, Ba2+, Fe2+, Ca2+, Ni2+, Zn2+, Li+, K+ and Na+) gave nearly no disturbance to the sensing process. When fabricated as test strips similar to pH-indicator papers, immediate color change from colorless to purple could be visually observed by naked-eyes without the aid of any additional equipment, with the detection limit as low as 1 × 10−7 M (Hg2+ in aqueous solution). Due to its easy synthesis, high selectivity and sensitivity, combined with the portable test strips, TPE-S could be developed as a convenient and cost-effective tool for the detection of Hg2+ in on-site inspections.

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Section: Resultsmentioning

confidence: 99%

A relay strategy for the mercury (II) chemodosimeter with ultra-sensitivity as test strips

Ruan

Lǐ

et al. 2015

Sci Rep

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show abstract

“…Besides the natural occurring of arsenic, the chromated copper arsenate (CCA) wood has posed potential serious treat to the environment [150,151]. Although, the EPA banned the sell of CCA treated wood on December 31 2003 in residential use, boardwalks, fences or play ground equipment, the industrial use is still allowed, leaving carpenters, linemen and the environment at risk [152,153].…”

Section: Heavy Metal Detectionmentioning

confidence: 99%

Recent advances in wide bandgap semiconductor biological and gas sensors

Pearton

Ren

Wang

et al. 2010

Progress in Materials Science

262

118

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“…[3,4] Therefore, the extensive use of mercury compounds in industry is of major concern: they are environmental pollutants, and a simple, sensitive method for detecting them is required. [5] There are several, luminescent, [6][7][8][9][10][11][12][13][14][15] chemical, [16][17][18][19] electrochemical, [20][21][22] and biosensor-based [23] analytical methods for detecting mercury that have been reported in the past few years. Most of these systems have limitations, which include interference from other metal ions, and the need to use organic or aqueous organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective and Reversible Optical, Colorimetric, and Electrochemical Detection of Mercury(II) by Amphiphilic Ruthenium Complexes Anchored onto Mesoporous Oxide Films

Nazeeruddin

Censo

Humphry‐Baker

et al. 2006

Adv Funct Materials

164

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The colorimetric, fluorimetric, and electrochemical detection of mercury ions by functionalized ruthenium sensitizers in aqueous and non‐aqueous solutions and on anchored TiO2 films are investigated. Mercury ions coordinate reversibly to the ruthenium sensitizers, inducing a color change and increasing the phosphorescence intensity significantly. The electrochemical data of the adsorbed sensitizer on TiO2 films show a reversible couple, owing to the percolation through electronic couplings between –NCS ligands of neighboring molecules; upon exposure to a Hg2+‐containing solution, the electrical signal is appreciably reduced. The detection limit for mercury(II) ions using UV‐vis spectroscopy in homogeneous aqueous solutions is estimated to be ∼ 20 ppb. The results presented herein have important implications in the development of reversible colorimetric, fluorimetric, and electrochemical on–off sensors based on nanocrystalline semiconductor films for the simple, swift, and selective detection of mercury ions in solution.

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A Dip-and-Read Test Strip for the Determination of Mercury(II) Ion in Aqueous Samples Based on Urease Activity Inhibition

Cited by 27 publications

References 27 publications

A relay strategy for the mercury (II) chemodosimeter with ultra-sensitivity as test strips

A relay strategy for the mercury (II) chemodosimeter with ultra-sensitivity as test strips

Recent advances in wide bandgap semiconductor biological and gas sensors

Highly Selective and Reversible Optical, Colorimetric, and Electrochemical Detection of Mercury(II) by Amphiphilic Ruthenium Complexes Anchored onto Mesoporous Oxide Films

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