Detection of Cd(II) ions by a self-tuning method using quantum dot fluorescence sensing

Pan, Yu‐Chen; Xiao, Wensong; Fan, Ming; Chen, Wenxin; Xu, Shuhong

doi:10.1088/2053-1591/aa8925

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Even if the accumulated Cd 2+ content in the body is very low, it can still result in several health problems, including potentially fatal diseases, such as diabetes, cancer, and chondropathy [3]. Currently, there are several efficient methods to detect Cd 2+ : atomic absorption spectrometry (AAS) [4], inductively coupled plasma mass spectrometry (ICP-MS) [5], atomic fluorescence spectrophotometry (AFS) [6], the electrochemical method [7,8], and the fluorescence probe method [9][10][11]. Compared to the fluorescent probe technique, AAS, AFS, and ICP-MS need complex and expensive instruments, complicated sample preparation, and the electrochemical method, which has the disadvantage of poor selectivity.…”

Section: Introductionmentioning

confidence: 99%

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

Sadia

Khan

et al. 2023

Molecules

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Herein, a novel optical chemosensor, (CM1 = 2, 6-di((E)-benzylidene)-4-methylcyclohexan-1-one), was designed/synthesized and characterized by 1H-NMR and FT-IR spectroscopy. The experimental observations indicated that CM1 is an efficient and selective chemosensor towards Cd2+, even in the presence of other metal ions, such as Mn2+, Cu2+, Co2+, Ce3+, K+, Hg2+,, and Zn2+ in the aqueous medium. The newly synthesized chemosensor, CM1, showed a significant change in the fluorescence emission spectrum upon coordination with Cd2+. The formation of the Cd2+ complex with CM1 was confirmed from the fluorometric response. The 1:2 combination of Cd2+ with CM1 was found optimum for the desired optical properties, which was confirmed through fluorescent titration, Job’s plot, and DFT calculation. Moreover, CM1 showed high sensitivity towards Cd2+ with a very low detection limit (19.25 nM). Additionally, the CM1 was recovered and recycled by the addition of EDTA solution that combines with Cd2+ ion and, hence, frees up the chemosensor.

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Section: Introductionmentioning

confidence: 99%

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

Sadia

Khan

et al. 2023

Molecules

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“…Currently, there are several effective techniques to detect Cd 2+ : atomic absorption spectrometry (AAS) [ 8 ], atomic fluorescence spectrophotometry (AFS) [ 9 ], inductively coupled plasma mass spectrometry (ICP-MS) [ 10 ], the electrochemical method [ 11 , 12 ], and the fluorescence probe method [ 13 , 14 , 15 ]. Compared to the fluorescent probe method, AAS cannot be used for simultaneous analysis of multiple elements, as AFS and ICP-MS require expensive and complex instruments, complex sample preparation, and the electrochemical method, which has the disadvantage of poor selectivity.…”

Section: Introductionmentioning

confidence: 99%

Detection of Cd2+ in Aqueous Solution by the Fluorescent Probe of CdSe/CdS QDs Based on OFF–ON Mode

Wang

Gao

Wang

et al. 2022

Toxics

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The detection of heavy metals in aqueous solutions has always attracted much attention from all over the world. A fluorescent probe of CdSe/CdS core-shell quantum dots (QDs) was designed to detect trace Cd2+ in aqueous solutions using the OFF–ON mode rapidly and efficiently, likely based on adsorption and desorption reactions between ethylenediaminetetraacetic acid disodium salt (EDTA) and CdSe/CdS QDs. In the OFF mode, the optical shielding function of EDTA results in fluorescence quenching owing to the strong adsorption ability of EDTA with Cd2+ on the sites of CdSe/CdS QDs surface. In the ON mode, the introduction of Cd2+ promotes the desorption of EDTA from the EDTA-CdSe/CdS QDs and restores the fluorescence intensity. There were two linear response ranges which were 0.1–20 µmol/L and 20–90 µmol/L for the EDTA-CdSe/CdS system to detect Cd2+. The detection limit was 6 nmol/L, and the standard deviation was below 4% for the detection of Cd2+ concentration in tap water.

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A fluorescent probe for Cd²⁺ detection based on the aggregation-induced emission enhancement of aqueous Zn–Ag–In–S quantum dots

Chang

Wei

et al. 2019

Anal. Methods

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Detection of Cd(II) ions by a self-tuning method using quantum dot fluorescence sensing

Cited by 3 publications

References 11 publications

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

Detection of Cd2+ in Aqueous Solution by the Fluorescent Probe of CdSe/CdS QDs Based on OFF–ON Mode

A fluorescent probe for Cd²⁺ detection based on the aggregation-induced emission enhancement of aqueous Zn–Ag–In–S quantum dots

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Detection of Cd(II) ions by a self-tuning method using quantum dot fluorescence sensing

Cited by 3 publications

References 11 publications

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

Detection of Cd2+ in Aqueous Solution by the Fluorescent Probe of CdSe/CdS QDs Based on OFF–ON Mode

A fluorescent probe for Cd2+ detection based on the aggregation-induced emission enhancement of aqueous Zn–Ag–In–S quantum dots

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A fluorescent probe for Cd²⁺ detection based on the aggregation-induced emission enhancement of aqueous Zn–Ag–In–S quantum dots