In this work, Amberlite IRC-50 cation exchanger has been chemically functionalized with 8-hydroxyquinoline chelator to enhance its sorption capacity and selectivity toward transition metals. The resin characterized with X-ray photoelectron spectroscopy (XPS), attenuated total reflection infrared spectroscopy (ATR-IR), scanning electron microscope (SEM), and elemental analysis. Under optimum conditions, the sorption capacity values for Mn (II), Cu(II), Co(II) and Ni(II) ions have been increased by 50% or more in comparison with plain resin. The calibration curves for the studied ions were linear over the concentration range from 0 (blank) to 50 ng/ml. with R2 from 0.994–0.999. The LOD values for Mn(II), Cu(II), Co(II) and Ni(II) were 0.024, 0.035, 0.048, and 0.058 ng ml⁻¹ respectively. The sorbent worked well as an efficient SPE material for the studied ions from groundwater real samples prior to their analysis by ICP-MS. The acceptable recovery and accuracy values prove its competence to extract these metals from groundwater matrices.

在这项工作中，Amberlite IRC-50阳离子交换剂已经用8-羟基喹啉螯合剂进行了化学功能化，以增强其吸附能力和对过渡金属的选择性。该树脂具有X射线光电子能谱（XPS），衰减全反射红外光谱（ATR-IR），扫描电子显微镜（SEM）和元素分析的特征。在最佳条件下，与普通树脂相比，Mn（II），Cu（II），Co（II）和Ni（II）离子的吸附容量值增加了50％或更多。在从0（空白）到50 ng / ml的浓度范围内，所研究离子的校准曲线是线性的。R2在0.994-0.999之间。Mn（II），Cu（II），Co（II）和Ni（II）的LOD值为0.024、0.035、0.048和0.058 ng ml ^-1分别。在通过ICP-MS分析地下水真实样品中的离子之前，该吸附剂作为有效的SPE材料非常有效。可接受的回收率和准确度值证明了其从地下水基质中提取这些金属的能力。