Colorimetric Detection of Iodine Ion Based on Its Inhibition Effect on Peroxidase-Like Activity of Platinum Nanoparticles
10.11895/j.issn.0253-3820.171220
- VernacularTitle:基于对铂纳米粒子过氧化物模拟酶活性的抑制检测碘离子
- Author:
Xia Li LU
1
;
Yang WANG
;
Xiao Xiao LIN
;
Yao Xin LI
;
Na Meng XIN
Author Information
1. 山东师范大学生命科学学院
- Keywords:
Platinum nanoparticles;
Peroxidase mimics;
Iodine ion;
Catalytic activity
- From:
Chinese Journal of Analytical Chemistry
2018;46(1):94-99
- CountryChina
- Language:Chinese
-
Abstract:
As an important inorganic element, iodine not only plays an important role in human growth and metabolism, but also has an irreplaceable role in the chemical engineering, medicine, food and other fields.Thus the detection of iodine ion is of important significance.In this work, colorimetric recognition and sensing of iodine ion with high sensitivity was proposed based on target induced shielding of the peroxidase-like activity of bare platinum nanoparticles ( PtNPs ).This assay exhibited simplicity and cost-effectiveness.The recognition of iodine ion by bare PtNPs could be fulfilled in a few seconds and the assay could be accomplished within 10 min.The detection range for iodine ion was 20 nmol/L-5.0 μmol/L and the detection limit was 8 nmol/L ( S/N = 3 ).Furthermore, the new assay system did not require surface modification of nanoparticles, nor complex organic synthesis.This assay was successfully applied to detection of iodine concentration in real salt and water samples, exhibiting promising application prospects.
