Resonance Scattering Detection of Trace Hg2+ Using Aptamer-modified AuPd Nanoalloy Probe as Catalyst
Resonance Scattering Detection of Trace Hg2+ Using Aptamer-modified AuPd Nanoalloy Probe as Catalyst
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以适配体修饰的AuPd纳米合金探针为催化剂共振散射检测痕量Hg2
DOI:
10.1002/cjoc.201180314
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发表时间:
2011-08
影响因子:
5.4
通讯作者:
Jiang Zhiliang
中科院分区:
文献类型:
--
作者:
Liu Qingye;Fan Yanyan;Liang Aihui;Jiang Zhiliang
The 5 nm AuPd nanoalloy in mole ratio of Au:Pd=32:1 was prepared, using sodium citrate as the stabilizing agent and NaBH4 as the reductant. The AuPd nanoalloy was modified by the aptamer to prepare an aptamer- AuPd (AptAuPd) probe for resonance scattering (RS) detection of 5.0–1250 nmol/L Hg2+. The AptAuPd-Hg2+ aptamer reaction solution was filtrated by membrane, and the AptAuPd in the filtrate exhibited strong catalytic effect on the slow NiP particle reaction between NiCl2 and NaH2PO2, and the NiP particles showed a RS peak at 508 nm. The RS intensity decreased when Hg2+ concentration increased. The decreased RS intensity was linear to Hg2+ concentration in the range of 0.5–1250 nmol/L. The RS assays were used to determine Hg2+ in real samples, with good results.
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影响因子:
2.7
作者:
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通讯作者:
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影响因子:
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16.6
作者:
Lee, Jae-Seung;Han, Min Su;Mirkin, Chad A.
通讯作者:
Mirkin, Chad A.