Department of Chemistry, Ilam Branch, Islamic Azad University, Ilam, Iran.
Department of Chemistry, Ilam Branch, Islamic Azad University, Ilam, Iran.
Anal Chim Acta. 2022 Apr 29;1204:339262. doi: 10.1016/j.aca.2021.339262. Epub 2021 Nov 30.
In this study, a simple one-step method was applied for extraction and determination of lead and cadmium. The significant variables in extraction and pre-concentration were identified using analysis of variance and their behavior was modeled. Dual-template imprinted polymer was synthesized on modified Mesoporous silica structures coated with FeO magnetic nanoparticles. The optimum condition was 6.12 for pH, 40.62 mg for the polymer amount and 17.38 for the ultrasonic time. Concentration range, correlation coefficient, limit of detection and relative standard deviation for lead were reported to be 0.5-950, 0.9988, 0.35 μg L and 3.5%, respectively. For cadmium the above mentioned figure of merits were 0.3-980, 0.9969, 0.15 μg L and 2.4%, respectively. The adsorption capacities for lead and cadmium were reported to be 10.28 and 10.38, while their imprinting factors were 5.89 and 6.36, respectively.
在这项研究中，应用了一种简单的一步法来提取和测定铅和镉。通过方差分析确定了提取和预浓缩中的显著变量，并对其行为进行了建模。在涂有 FeO 磁性纳米粒子的改性介孔硅结构上合成了双模板印迹聚合物。最佳条件为 pH 6.12、聚合物用量 40.62 mg 和超声时间 17.38 min。报道了铅的浓度范围、相关系数、检测限和相对标准偏差分别为 0.5-950、0.9988、0.35 μg/L 和 3.5%。对于镉，上述优点分别为 0.3-980、0.9969、0.15 μg/L 和 2.4%。铅和镉的吸附容量分别为 10.28 和 10.38，其印迹因子分别为 5.89 和 6.36。
