The persistent reports on the indiscriminate contamination of foodstuffs with inedible chemicals for economic gains and the high cost of the existing analytical methods for their detection make it necessary to develop simple and cheaper methods for the immediate detection of those toxic substances. Here, we report a fast and highly sensitive electrochemiluminescence (ECL) method for the detection of foodstuffs adulteration with an industrial bleaching agent-rongalite (RGL) for the first time. Under the optimal conditions, the ECL intensity of the tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)₃²⁺) increases linearly with the concentration of RGL in the range of 1 μM to 1000 μM with a limit of detection of 0.57 μM (S/N = 3). The developed method has shown excellent selectivity in the presence of co-existing interfering species. The application of the ECL method in this contribution can be extended to other foodstuffs that might be adulterated with RGL other than the one (tofu) investigated here.

关于为获取经济利益而对食品进行不可食的化学物质的不加选择的污染的持续报道，以及用于检测它们的现有分析方法的高成本，使得有必要开发一种简单且便宜的方法来立即检测这些有毒物质。在这里，我们首次报告了一种快速，高度灵敏的电化学发光（ECL）方法，用于首次使用工业漂白剂-白锌矿（RGL）检测食品掺假。在最佳条件下，三（2,2'-联吡啶）钌（II）（Ru（bpy）₃ ²⁺）随RGL浓度在1μM至1000μM范围内线性增加，检出限为0.57μM（S / N = 3）。在存在共存干扰物种的情况下，开发的方法显示出极好的选择性。ECL方法在此方面的应用可以扩展到其他可能掺入RGL的食品，而不是此处研究的一种（豆腐）。