A novel sensor for visual and selective detection of Hg²⁺ based on functionalized doped quantum dots

Abstract

In this paper, a novel analytical platform for the visual, sensitive and reliable analysis of mercury ions (Hg2+) is fabricated based on functionalized doped quantum dots. We synthesized new specific...

A fluorescent probe based on aptamer gold nanoclusters for rapid detection of mercury ions

“…[51][52][53][54] Spinach and crawsh were selected as the food samples to be evaluated in the present study. Different concentrations (5,15,30,60, and 100 nM) of Hg 2+ were spiked into the spinach and crawsh samples for detection. As presented in Table 2, the recovery values were in the range of 91.99%∼108.06%, and the RSD value was less than 5.16%.…”

“…Hg 2+ ions combine strongly with the -SH groups in the protein structure, causing permanent damage to the central nervous system, which leads to various diseases, such as Hydrargyria, Acrodynia, and Minamata. [1][2][3][4][5] Therefore, it is particularly important to monitor the levels of mercury ions in food to prevent damage to human health. The FAO/WHO-established permissible limit for mercury in food is a tentative tolerable weekly intake (PTWI) of 0.3 mg g −1 , while the US Environmental Protection Agency (EPA) has mandated an upper limit of 2 ppb (10 nM) for Hg 2+ ions.…”