Journal
RSC ADVANCES
Volume 3, Issue 48, Pages 25614-25619Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra44346a
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Funding
- National Natural Science Foundation of China [21205020, 20977062, 31071860]
- Special Fund for Agro-scientific Research in the Public Interest of China [200903056]
- National High-Tech Research and Development Plan [2012AA101405]
- Excellent Doctoral Dissertation Cultivation Fund of Shanghai Jiao Tong University [20121517]
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The catalytic activity of higher concentration of hemin can be temporarily inhibited by arsenic-binding aptamers, and it will recover in the presence of As(III) due to the exhaustion of aptamers, so the subsequent TMB molecules can be oxidized thoroughly and cause a remarkable increase of absorbance value at 442 nm, which enables the colorimetric detection of As(III) with high selectivity and a detection limit of 6 ppb.
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