Within this work, an innovative ionic liquid-coated sulphonyl silanized graphene oxide-supported fizzy capsule-enhanced ionic liquid distributive solid-phase micro-extraction (MGO@SOH-IL-DSPM) was successfully prepared for enriching and extracting lead [Pb(II)], cadmium [Cd(II)], and cobalt [Co(II)] ions from water samples. The MGO@SOH hybrid was investigated using Fourier transform infrared (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscope (SEM), Zeta potential and surface area. Exploration and optimization were conducted on various parameters including solution pH, dosages of extractant, volume of ionic liquid, and the type and concentration of eluent. The optimized experimental conditions for achieving high extraction efficiencies of the targeted metals were determined as follows: a mixture of NaCO and NaHPO (0.12 g) each, at a 1:1 M ratio); utilization of 0.03 g of MGO@SOH nanocomposites; addition of 10 μL of ionic liquid as the extractant; pH adjustment to approximately 5 for Pb(II), and 4.18 for both Co(II) and Cd(II); and elution using HNO as the eluent (at a concentration of 1.5 M, with a volume of 3 ml). Under the ideal circumstances, the extraction yield efficiencies of the target metal ions in four authentic water samples were in the range (96.09 % − 100 %) for Cd(II), (99.99 % − 102 %) for Pb(II), and (99.99 % − 103 %) for Co(II), the RSDs were lower than 1.7 %. The content of Cd(II), Pb(II), and Co(II) ions in four actual samples of water were determined within the range of 1.25 – 3.75 μg/L, 6 – 15 μg/L, and 29.15 – 70 μg/L, respectively.

中文翻译：

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重金属提取的变革策略：用于水生环境中分布式固相微萃取的离子液体增强碳酸胶囊


在这项工作中，成功制备了一种创新的离子液体涂层磺酰基硅烷化氧化石墨烯负载的泡沫胶囊增强离子液体分布固相微萃取（MGO@SOH-IL-DSPM），用于富集和提取铅[Pb(II) )]、水样中的镉 [Cd(II)] 和钴 [Co(II)] 离子。使用傅里叶变换红外 (FTIR)、X 射线衍射 (XRD)、热重分析 (TGA)、扫描电子显微镜 (SEM)、Zeta 电位和表面积对 MGO@SOH 杂化物进行研究。对溶液pH、萃取剂用量、离子液体体积、洗脱液种类和浓度等参数进行探索和优化。确定实现目标金属高萃取效率的优化实验条件如下：Na2CO3和Na2HPO4（各0.12g，比例为1:1M）的混合物；使用0.03克MGO@SOH纳米复合材料；加入10μL离子液体作为萃取剂；将 Pb(II) 的 pH 调整至大约 5，将 Co(II) 和 Cd(II) 的 pH 调整至 4.18；以HNO为洗脱液(浓度1.5M，体积3ml)洗脱。在理想情况下，4个真实水样中目标金属离子的萃取效率范围为：Cd(II)、Pb(II)、Pb(II)和Pb(II)的提取效率分别为(96.09 % − 100 %)和(99.99 % − 102 %)。对于 Co(II) (99.99 % − 103 %)，RSD 低于 1.7 %。 4个实际水样中Cd(II)、Pb(II)、Co(II)离子含量测定范围为1.25~3.75μg/L、6~15μg/L、29.15~70μg/L。 /L，分别。