Development of gold nanoparticle-based rapid detection kit for melamine in milk products.
作者： Qingqing Zhou , Nan Liu , Zhiwei Qie , Ying Wang , Baoan Ning
DOI: 10.1021/JF202919A
关键词: Sodium borohydride 、 Analytical chemistry 、 Mass spectrometry 、 Particle size 、 Melamine 、 Nanoparticle 、 Transmission electron microscopy 、 Adsorption 、 Working range 、 Chemistry 、 Chromatography
摘要: A reliable and sensitive kit for the rapid detection of melamine (Mel) was developed. The is based on gold nanoparticle (Au NP) probe includes a standard colorimetric card. Au NPs were prepared by sodium borohydride reduction characterized transmission electron microscopy, which revealed particle sizes approximately 5 nm. performance in terms aggregation kinetics, cross-reactivity, anti-interference, sample pretreatment investigated. card then fabricated chromatic aberration series Mel-spiked milk reacts with nm NPs. working range 1-120 mg/L, its visibly more comparison As low as 1 mg/L Mel levels can be determined, assay taking only about 10 min, including pretreatment. stored year at room temperature. Samples also detected kit, yielding results close to those obtained high-performance liquid chromatography/mass spectrometry. Thus, applicable qualitative semiquantitative field detection, well naked-eye screening without aid any instrumentation.
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