Sensitive and selective determination of NO 2 − ion in aqueous samples using modified gold nanoparticle as a colorimetric probe
作者: Yun-Sik NamKown-Chul NohNak-Kyoon KimYeonhee LeeHee-Kyung ParkKang-Bong Lee
作者单位: 1Advanced Analysis Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryangri, Seoul 130-650, Republic of Korea
2Department of Oral Medicine and Oral Diagnosis, School of Dentistry, Seoul National University, 101 Daehak-ro Jongro-gu, Seoul 110-774, Republic of Korea
刊名: Talanta, 2014, Vol.125 , pp.153-158
来源数据库: Elsevier Journal
DOI: 10.1016/j.talanta.2014.02.030
关键词: Nitrite ionGold nanoparticle1-(2-mercaptoethyl)-135-Triazinane-246-trioneColorimetric detection
原始语种摘要: Abstract(#br)A sensitive and selective colorimetric method for determination of nitrite ion in aqueous samples was developed using 1-(2-mercaptoethyl)-1, 3, 5-triazinane-2, 4, 6-trione-functionalized gold nanoparticles (MTT-GNPs). The nitrite ion seems to be used as a “molecular bridge”, which can form NH---N and NH---O hydrogen bonds with the MTT-GNPs, shorten the interparticle distance, and induce the aggregation of the MTT-GNPs. This aggregation results in a dramatic change from wine-red to purple-gray color. Therefore, the concentration of nitrite ion in environmental samples can be quantitatively detected using the MTT-GNPs sensor by the naked eyes or UV–vis spectrometer. Moreover, investigations have revealed the sensitivity of the detection could be clearly improved by modulating...
全文获取路径: Elsevier  (合作)
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影响因子:3.498 (2012)

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