A novel fluorescent carbon dots (CDs) have been prepared for the quantitative determination of iron(III) (Fe³⁺) and hypochlorite (ClO⁻) ions separately. Firstly, CDs were successfully synthesized using a hydrothermal treatment which is a green and simple method from cranberry as a novel natural resource. They were precisely characterized using advanced instruments. Secondly, CDs were separately studied by absorption and fluorescence spectroscopy as a fluorescence sensor for various metal cations and anions, respectively. As a result of spectroscopic data, it was showed that CDs were effectively quenched with Fe³⁺ ions among various cations and ClO⁻ ions among various anions, respectively. The fluorescence intensities of CDs were quenched by forming a non-radiative complex between Fe³⁺ and CDs, and LOD for Fe³⁺ was calculated as 0.75 nM in the range of 1.6 nM to 22.8 nM. Furthermore, their fluorescence intensities are quenched by oxidizing of the hydroxyl groups on surface of CDs with ClO⁻ ions, which have strong oxidant properties, and a detection limit (LOD) for ClO⁻ was calculated as 1.60 nM in the range of 9.9 nM to 78.0 nM. Also, the proposed method to detect Fe³⁺ and ClO⁻ ions was successfully applied in real natural spring and tap water samples. All data showed that these novel CDs could be used as a highly selective and sensitive, and instantaneously responsive “turn-off” fluorescence sensor for Fe³⁺ and ClO⁻ ions.

已经制备了一种新型荧光碳点 (CD)，用于分别定量测定铁 (III) (Fe ³⁺ ) 和次氯酸盐 (ClO ^- ) 离子。首先，使用水热处理成功地合成了 CD，这是一种绿色且简单的方法，从蔓越莓作为一种新型自然资源。使用先进的仪器对它们进行精确表征。其次，通过吸收光谱和荧光光谱分别研究了 CDs 作为各种金属阳离子和阴离子的荧光传感器。光谱数据的结果表明，CDs 被各种阳离子和 ClO ^{- 中的}Fe ³⁺离子有效猝灭^。各种阴离子中的离子。CD的荧光强度通过形成铁之间的非辐射复合猝灭³⁺和CD，并用于LOD的Fe ³⁺在1.6以下的范围内计算为0.75 nM至22.8纳米。此外，它们的荧光强度通过用 ClO ^-离子氧化CD 表面的羟基而淬灭，ClO ^-离子具有强氧化性，计算出ClO ^-的检测限 (LOD) 为1.60 nM，范围为 9.9 nM 至78.0 纳米。此外，建议的检测 Fe ³⁺和 ClO ^{- 的方法}离子已成功应用于真实天然泉水和自来水样品中。所有数据都表明，这些新型 CD 可用作 Fe ³⁺和 ClO ^-离子的高选择性和灵敏性、即时响应“关闭”荧光传感器。