A Nanosilver Resonance Rayleigh Scattering Method for the Determination of Trace Cysteine
Keyword(s):
Using PEG-10000 and sodium citrate as stabilizer, and NaBH4 as reducer, a stable nanosilver (AgNPs) sol was prepared. In pH 6.6 phosphate buffer solution containing NaCl, the AgNPs were aggregated to large particles, which lead to resonance Rayleigh scattering (RRS) peak at 350 nm enhancement. Upon addition of cysteine, the peak decreased. The decreased value ΔI is linear to cysteine concentration in the range of 5.0×10-8-6.0×10-7 mol/L. Thus, a new RRS method was proposed for detection of cysteine.
2010 ◽
Vol 20
(12)
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pp. 1552-1556
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2010 ◽
Vol 55
(8)
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pp. 693-700
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2019 ◽
Vol 220
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pp. 117100
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2020 ◽
Vol 412
(5)
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pp. 1087-1096
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