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Functionalization of silver nanoparticles with mPEGylated luteolin for selective visual detection of Hg²⁺ in water sample
- Qing, Weixia, Zhao, Mengnan, Kou, Conghui, Lu, Minghua, Wang, Yong
- RSC advances 2018 v.8 no.51 pp. 28843-28846
- aluminum, aqueous solutions, barium, cadmium, calcium, color, colorimetry, copper, lead, luteolin, magnesium, manganese, mercury, metal ions, nanosilver, nickel, potassium, sodium, strontium, tap water, zinc
- A novel colorimetric sensor based on mPEGylated luteolin-functionalized silver nanoparticles (mPEGylated luteolin-AgNPs) in an aqueous solution was prepared. The mPEGylated luteolin-AgNP solution was utilized to detect Hg²⁺ with high sensitivity and selectivity in the presence of other metal cations including Na⁺, K⁺, Mg²⁺, Zn²⁺, Ni²⁺, Mn²⁺, Ba²⁺, Pb²⁺, Sr²⁺, Ca²⁺, Cd²⁺, Al³⁺ and Cu²⁺. The solution could be induced to aggregate, and a color change from yellow-brown to colorless was observed in the presence of Hg²⁺. Meanwhile, the sensor was successfully used to detect Hg²⁺ in tap water with satisfactory recovery ranges using the standard addition method.