Highly sensitive and selective colorimetric detection of dual metal ions (Hg²⁺and Sn²⁺) in water: an eco-friendly approach

Abstract

Synthesis of Ag nanoparticles using Allin based garlic extract for highly sensitive and selective detection of metal ions Hg2+ and Sn2+ in water. The limit of detection (LoD) for Hg2+ and Sn2+ ions were found as 15.7 nM and 11.25 nM respectively.

Green synthesis of Piper chaudocanum stem extract mediated silver nanoparticles for colorimetric detection of Hg 2+ ions and antibacterial activity

“… metal nanoparticles detection method LOD ref. the sodium salt of N-cholyl- L -cysteine-AgNPs colorimetric 8 nM [ 28 ] graphene oxide – AgNPs electrochemical 0.285 µM [ 29 ] lotus root nitrogen-doped carbon dots fluorescence 18.7 nM [ 30 ] Cinnamomum tamala extract – AuNPs colorimetric 0.49 µM [ 31 ] Ziziphus mauritiana leaf – AgNPs colorimetric 0.04 nM [ 12 ] garlic extract – AgNPs colorimetric 15.7 nM [ 32 ] Cochlospermum gossypium bark – AgNPs colorimetric 50 nM [ 33 ] Agaricus Bispores -AgNPs electrochemical 2.1 µM [ 34 ] P. chaudocanum stem – AgNPs colorimetric 23 nM present study …”

A highly selective Hg2+ colorimetric sensor and antimicrobial agent based on green synthesized silver nanoparticles using Equisetum diffusum extract

“…5,6 Among others, colorimetric sensors have attracted considerable attention due to their simplicity, low cost, and ability to provide fast and visible readings for heavy metals detection. [7][8][9] In this regard, plasmonic metal nanomaterials such as silver nanoparticles (AgNPs) have attracted immense attention due to their distinct optical properties stemming from their localized surface plasmon resonance (LSPR), which is responsible for their characteristic color, rendering them promising candidates for the fabrication of colorimetric sensors. [10][11][12] However, many sensing nanoprobes are based on sophisticated synthesis routes of AgNPs, toxic chemicals, or complex composite materials, which would affect the reproducibility and stability of the analytical results.…”

1-Adamantanamine-based triazole-appended organosilanes as chromogenic “naked-eye” and fluorogenic “turn-on” sensors for the highly selective detection of Sn2+ ions

“…14 It can also cause complete post-implantation loss in fetal system via interrupting ossification. 15 Hence, robust systems should be developed for protecting human health and the environment via monitoring the levels of Sn 2+ ions, and this topic has become of interest to chemists working in the field of optical sensing. Previously, several traditional analytical methods, like electrochemical methods, 16 inductively coupled plasma mass spectrometry, 17 chromatography, 18 atomic absorption/ emission spectroscopy, 19 and neutron activation analysis, 20 have been applied to the detection of Sn 2+ ions but these suffer from numerous drawbacks, such as requiring the maintenance of sophisticated instruments, involving time-consuming and tedious analysis, and showing a lack of economy.…”

“…14 It can also cause complete post-implantation loss in fetal system via interrupting ossification. 15…”