Silver nanoparticles as colorimetric probe for selective determination of Hg2+ from milk samples with ultrasound-assisted extraction protocol
Corresponding Author
Pranali Nikam
Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal, 132001 Haryana, India
Author for correspondence. E-mail: [email protected]
Contribution: Conceptualization, Methodology, Software, Data curation, Investigation, Validation, Formal analysis, Visualization, Writing - original draft, Writing - review & editing
Search for more papers by this authorRaman Seth
Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal, 132001 Haryana, India
Contribution: Conceptualization, Supervision, Writing - review & editing, Visualization, Funding acquisition, Project administration, Resources
Search for more papers by this authorRajan Sharma
Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal, 132001 Haryana, India
Contribution: Software, Resources, Writing - review & editing, Data curation, Conceptualization
Search for more papers by this authorCorresponding Author
Pranali Nikam
Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal, 132001 Haryana, India
Author for correspondence. E-mail: [email protected]
Contribution: Conceptualization, Methodology, Software, Data curation, Investigation, Validation, Formal analysis, Visualization, Writing - original draft, Writing - review & editing
Search for more papers by this authorRaman Seth
Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal, 132001 Haryana, India
Contribution: Conceptualization, Supervision, Writing - review & editing, Visualization, Funding acquisition, Project administration, Resources
Search for more papers by this authorRajan Sharma
Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal, 132001 Haryana, India
Contribution: Software, Resources, Writing - review & editing, Data curation, Conceptualization
Search for more papers by this authorAbstract
The present investigation demonstrates a simple, sensitive and selective colorimetric probe for the detection of Hg2+ in milk samples employing redox interaction of Hg2+ ions with citrate-stabilised silver nanoparticles, inducing colour change from yellow to colourless. Milk samples were pretreated by ultrasound assistance in acidic media. The detection limit (LOD) was 6.17 ppb using UV–Visible spectrophotometer with linear correlation (R2 = 0.9901) at 10–2000 ppb solution of Hg2+ ions. Developed probe was highly selective to Hg2+ over different interfering metal ions and can be effectively employed to identify Hg2+ in milk samples.
CONFLICT OF INTEREST STATEMENT
No.
Open Research
DATA AVAILABILITY STATEMENT
The data reported in present study are available on request from the corresponding authors.
Supporting Information
| Filename | Description |
|---|---|
| idt13071-sup-0001-Figures.docxWord 2007 document , 200.7 KB | Figure S1 DLS measurements of hydrodynamic size distribution of (a) Native AgNPs (b) AgNPs containing Hg2+ (1 ppm). Figure S2 Zeta potential distribution of (a) Native AgNPs and (b) aggregated AgNPs containing Hg2+ (1 ppm). |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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