AbstractA method is described for the fluorometric determination of hypochlorite. It is making use of molybdenum disulfide quantum dots (MoS2 QDs) as a fluorescent probe. The QDs are prepared by hydrothermal reaction of sodium molybdate with glutathione. They possess diameters typically ranging from 1.4 to 3.8 nm, excellent stability in water, and blue photoluminescence (with excitation/emission peaks located at 315/412 nm and a quantum yield of 3.7%). The fluorescence of the QDs is statically quenched by hypochlorite, and the Stern-Volmer plot is linear. Hypochlorite can be detected in the 5–500 μM concentration range with a 0.5 μM detection limit. The method has been successfully applied to the determination of hypochlorite in spiked samples of tap water, lake water, and commercial disinfectants. Graphical abstractSchematic of a method for the fluorometric determination of hypochlorite using MoS2 quantum dots as a fluorescent probe. It has been applied to hypochlorite assay in spiked samples of tap water, lake water, and commercial disinfectants.

中文翻译：

---

水溶性二硫化钼量子点是一种可行的次氯酸盐荧光探针

摘要介绍了一种荧光法测定次氯酸盐的方法。它利用二硫化钼量子点 (MoS2 QD) 作为荧光探针。通过钼酸钠与谷胱甘肽的水热反应制备量子点。它们的直径通常在 1.4 到 3.8 nm 之间，在水中具有出色的稳定性和蓝色光致发光（激发/发射峰位于 315/412 nm，量子产率为 3.7%）。量子点的荧光被次氯酸盐静态猝灭，Stern-Volmer 图是线性的。次氯酸盐可在 5–500 μM 浓度范围内检测到，检测限为 0.5 μM。该方法已成功应用于自来水、湖水和商业消毒剂加标样品中次氯酸盐的测定。图形摘要使用二硫化钼量子点作为荧光探针荧光测定次氯酸盐的方法示意图。它已应用于自来水、湖水和商业消毒剂的加标样品中的次氯酸盐测定。