检出限
吸附
水溶液中的金属离子
朗缪尔吸附模型
线性范围
傅里叶变换红外光谱
化学
X射线光电子能谱
核化学
分析化学(期刊)
离子
荧光
萃取(化学)
色谱法
化学工程
物理化学
有机化学
量子力学
物理
工程类
作者
Weitao Li,Zhengjie Hu,Jie Meng,Xuan Zhang,Wei Gao,Mingli Chen,Jianhua Wang
标识
DOI:10.1016/j.jhazmat.2020.125021
摘要
A novel dual functional composite (MOFL-TpBD) was prepared through solvothermal methods, with excellent Pb2+ ions separation and stable 2,4,6-Trinitrophenol (TNP) fluorescence detection performance. MOFL-TpBD was characterized by FTIR, XRD, XPS, SEM and TGA et al. The prepared material was used to extract Pb2+ ions, with an adsorption capacity of 21.74 mg g−1 calculated by Langmuir isotherm model. The limit of detection was 0.32 μg L−1, along with a linear range from 0.7 to 12 μg L−1 and a precision of 5.4% (1 μg L−1, n = 9), respectively, where MOFL-TpBD was adopted as adsorbent for Pb2+ ions preconcentration. The practical samples and reference water sample were measured by the provided method, with the satisfactory recoveries (91–110%) and reliable analytical results. MOFL-TpBD was capable of fluorescent sensing of TNP, with a linear range from 0.01 to 1 mM and a limit of detection of 3.52 μM, respectively, and a precision of 3.29% was obtained (0.2 mM, n = 11). Meanwhile, the recoveries ranged from 91% to 108% in analysis of TNP for the practical samples. The designed material provided a potential candidate material for the detection of heavy metal ions and explosives in environmental water samples.
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