Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China.
School of Basic Medical Sciences, North Sichuan Medical College, Nanchong 637000, China.
Food Chem. 2020 Jul 15;318:126502. doi: 10.1016/j.foodchem.2020.126502. Epub 2020 Feb 28.
A water-soluble, long-term stable, poly(sodium-p-styrenesulfonate)-enhanced and d-penicillamine stabilized argentum nanoclusters (PSS-DPA-AgNCs) was synthesized by a one-step ultraviolet radiation combined with microwave heating method. The effects of different types of polyelectrolytes and energy suppliers on the AgNCs photo-luminescence performance were investigated in detail. The prepared AgNCs are exhibited to be viable fluorescent method for 2-Mercapto-3-butanol (2-M-3-B), 3-Mercapto-2-butanone (3-M-2-B) and silicate (SiO) determinations. The fluorescence (FL) of PSS-DPA-AgNCs is quenched with the addition of 2-M-3-B/3-M-2-B/SiO mainly originating from a static quenching process. The method can monitor 2-M-3-B/3-M-2-B by fluorometry with a linear response in the range of 0.33-90.0/0.33-80.0 μM and a 74/250 nM detection limit (at 3σ/slope). For the SiO assay, corresponding data are 3.33-100.0 μM and 278 nM. Moreover, the proposed method was successfully used for the assays of two food flavors in the steamed bread and soda drinks, and silicate in the mineral water samples respectively.
一种水溶性、长期稳定的聚（苯乙烯磺酸钠）增强和 D-青霉胺稳定的银纳米簇（PSS-DPA-AgNCs）是通过一步紫外辐射结合微波加热法合成的。详细研究了不同类型的聚电解质和能源供应商对 AgNCs 光致发光性能的影响。所制备的 AgNCs 可作为 2-巯基-3-丁醇（2-M-3-B）、3-巯基-2-丁酮（3-M-2-B）和硅酸盐（SiO）测定的可行荧光方法。PSS-DPA-AgNCs 的荧光（FL）随着 2-M-3-B/3-M-2-B/SiO 的加入而被猝灭，主要源于静态猝灭过程。该方法可通过荧光法监测 2-M-3-B/3-M-2-B，线性响应范围为 0.33-90.0/0.33-80.0 μM，检测限为 74/250 nM（在 3σ/斜率处）。对于 SiO 测定，相应的数据分别为 3.33-100.0 μM 和 278 nM。此外，该方法还成功地用于蒸馒头和苏打饮料中两种食品香料以及矿泉水样品中硅酸盐的测定。
