Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 molL Nitric Acid
Joint Authors
Vasileva, Penka
Alexandrova, Teodora
Karadjova, Irina
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A sensitive and selective Hg2+ optical sensor has been developed based on the redox interaction of Hg2+ with starch-coated silver nanoparticles (AgNPs) in the presence of 0.005 mol L−1 HNO3.
The relative intensity of the localized surface plasmon absorption band of AgNPs at 406 nm is linearly dependent on the concentration of Hg2+ with positive slope for the concentration range 0–12.5 μg L−1 and negative slope for the concentration range 25–500 μg L−1.
Experiments performed demonstrated that metal ions (Na+, K+, Mg2+, Ca2+, Pb2+, Cu2+, Zn2+, Cd2+, Fe3+, Co2+, and Ni2+) do not interfere under the same conditions, due to the absence of oxidative activity of these ions, which guarantees the high selectivity of the proposed optical sensor towards Hg2+.
The limits of detection and quantification were found to be 0.9 µg L−1 and 2.7 µg L−1, respectively, and relative standard deviations varied in the range 9–12% for Hg content from 0.9 to 12.5 μg L−1 and 5–9% for Hg levels from 25 to 500 μg L−1.
The method was validated by analysis of CRM Estuarine Water BCR505.
A possible mechanism of interaction between AgNPs and Hg2+ for both concentration ranges was proposed on the basis of UV-Vis, TEM, and SAED analyses.
American Psychological Association (APA)
Vasileva, Penka& Alexandrova, Teodora& Karadjova, Irina. 2017. Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 molL Nitric Acid. Journal of Chemistry،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1172258
Modern Language Association (MLA)
Vasileva, Penka…[et al.]. Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 molL Nitric Acid. Journal of Chemistry No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1172258
American Medical Association (AMA)
Vasileva, Penka& Alexandrova, Teodora& Karadjova, Irina. Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 molL Nitric Acid. Journal of Chemistry. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1172258
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1172258