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Novel Three-dimensional Sensor for Rapid Detection of Pb(II) and Cd(II) in Edible Mushrooms |
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| Authors: | Jiaqi Yin Guanglei Chu Yue Wang Hongguo Zhai Bao Wang Xia Sun Yemin Guo Yanyan Zhang |
| Affiliation: | 1. School of Agricultural Engineering and Food Science, Shandong University of Technology, No.12 Zhangzhou Road, Zibo, 255049 Shandong Province, China Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Trace ability, No. 12 Zhangzhou Road, Zibo, 255049 Shandong Province, China. Zibo City Key Laboratory of Agricultural Product Safety Trace ability.;2. School of Agricultural Engineering and Food Science, Shandong University of Technology, No.12 Zhangzhou Road, Zibo, 255049 Shandong Province, China |
| Abstract: | A sensing platform was developed based on the molybdenum disulfide-reduced graphene oxide (MoS2-RGO). The flower-like MoS2-RGO nanocomposite had a large number of active sites such as oxygen-containing groups and highly reactive sulfur that contributed to the adsorption and preconcentration of heavy metal ions (HMIs). MoS2-RGO was synthesized by one-step reduction method. Under optimized conditions, the limits of detection (LODs) for Pb(II) and Cd(II) was 0.13 μg/L and 0.59 μg/L with a linear range of 4.1–207.2 μg/L and 2.2–112.4 μg/L, respectively. The modified sensors had been successfully applied to detect Pb(II) and Cd(II) in three kinds of edible mushrooms. |
| Keywords: | MoS2-RGO Edible mushrooms Simultaneous detection Pb(II) Cd(II) |