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- W2319774448 abstract "It is critically important to accurately determine histidine since it is an indicator for many diseases when at an abnormal level. Here, an inexpensive and simple method using an amine-functionalized magnetic nanoparticle-based Ni2+–histidine affinity pair system was developed for highly sensitive and selective detection of histidine in human urine by photochemical vapor generation atomic spectrometry. Ni2+ was first bound to the amine groups of the amine-functionalized magnetic nanoparticles and then liberated to solution via the highly specific interaction between the histidine and Ni2+ in the presence of histidine. The liberated histidine–Ni2+ complex was exposed to UV irradiation in the presence of formic acid to form gaseous nickel tetracarbonyl, which was separated from the sample matrix and determined by atomic absorption/fluorescence spectrometry. Compared to other methods, this approach promises high sensitivity, simplicity in design, and convenient operation. The need for organic solvents, enzymatic reactions, separation processes, chemical modification, expensive instrumentations, and sophisticated and complicated pretreatment is minimized with this strategy. A limit of detection of 1 nM was obtained and provided tens-to-hundreds of fold improvements over that achieved with conventional methods. The protocol was evaluated by analysis of several urine samples with good recoveries and showed great potential for practical application." @default.
- W2319774448 created "2016-06-24" @default.
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- W2319774448 date "2013-12-06" @default.
- W2319774448 modified "2023-09-26" @default.
- W2319774448 title "Recyclable Decoration of Amine-Functionalized Magnetic Nanoparticles with Ni<sup>2+</sup> for Determination of Histidine by Photochemical Vapor Generation Atomic Spectrometry" @default.
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- W2319774448 doi "https://doi.org/10.1021/ac403378d" @default.
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