Journal ArticleDOI
Aptamer conjugated silver nanoparticles for the colorimetric detection of arsenic ions using response surface methodology
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In this article, aptamer conjugated silver nanoparticles (Apt-SNPs) were synthesized and studied for colorimetric sensing of As(III) ions in solution.Abstract:
In this study, aptamer conjugated silver nanoparticles (Apt-SNPs) were synthesized and studied for colorimetric sensing of As(III) ions in solution. As(III) ions specifically interact with Apt-SNPs to form As(III)–Apt-SNPs and cause a remarkable decrease in the absorbance peak of silver nanoparticles at 403 nm, which enables the determination of As(III) with high selectivity and sensitivity. A three-factor, central composite design (CCD) optimization method combined with response surface methodology (RSM) was employed to maximize the efficiency of arsenic detection. The significance of the independent variables and their interactions were tested using the analysis of variance (ANOVA). The linear dynamic range of the colorimetric Apt-SNP based optical sensor covered a large variation of As(III) concentration from 50 to 700 μg L−1 and a detection limit of 6 μg L−1 was obtained. Moreover, this assay was able to detect As(III) ions with high sensitivity and revealed to have remarkable potential applications.read more
Citations
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Journal ArticleDOI
Arsenic sensor development based on modification with (E)-N′-(2-nitrobenzylidine)-benzenesulfonohydrazide: a real sample analysis
Mohammed M. Rahman,Mohammad Musarraf Hussain,Mohammad Musarraf Hussain,Muhammad Nadeem Arshad,Md. Rabiul Awual,Abdullah M. Asiri +5 more
TL;DR: In this article, the NBBSH/GCE sensor exhibited enhanced sensing performances such as sensitivity, limit of detection (LOD), linear dynamic range (LDR), and long-term stability towards selective arsenic ions.
Journal ArticleDOI
Nanomaterial-based aptamer sensors for arsenic detection
TL;DR: The recent development and applications of aptamer sensors (aptasensors) based-on nanomaterial for arsenic detection are reviewed, in particular with emphasis on the works using optical and electrochemical technologies.
Journal ArticleDOI
Label-free signal-on aptasensor for sensitive electrochemical detection of arsenite
Lin Cui,Jie Wu,Huangxian Ju +2 more
TL;DR: A signal-on aptasensor was fabricated for highly sensitive and selective electrochemical detection of arsenite with a label-free Ars-3 aptamer self-assembled on a screen-printed carbon electrode (SPCE) via Au-S bond, showing excellent specificity against other heavy metal ions.
Journal ArticleDOI
A simple and sensitive fluorimetric aptasensor for the ultrasensitive detection of arsenic(III) based on cysteamine stabilized CdTe/ZnS quantum dots aggregation.
TL;DR: The interference effect of a wide variety of cations and anions was investigated, and the obtained results confirm high selectivity of the aptasensor for As(III) detection.
Journal ArticleDOI
Selective Fluorogenic Sensing of As(III) Using Aptamer-Capped Nanomaterials
Mar Oroval,Carmen Coll,Andrea Bernardos,María D. Marcos,Ramón Martínez-Máñez,Dmitry G. Shchukin,Félix Sancenón +6 more
TL;DR: A novel sensing nanoprobe for the selective and sensitive detection of As( III) based on the combination of aptamers with mesoporous silica nanoparticles has been developed and the efficiency of the sensor is demonstrated in environmental conditions, showing a great potential in As(III) monitoring assays.
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