Roushani Mahmoud, Abbasi Shahryar, Khani Hossein
Department of Chemistry, Ilam University, Ilam, Iran,
Environ Monit Assess. 2015 Sep;187(9):601. doi: 10.1007/s10661-015-4820-z. Epub 2015 Aug 29.
We describe a nanosized Hg(II)-imprinted polymer that was prepared from methacrylic acid as functional monomer, ethyleneglycol dimethacrylate as cross-linker, 2,2'-azobisisobutyronitrile (AIBN) as radical initiator, 2, 2'-di pyrydyl amine as a specific ligand, and Hg (II) as the template ions by precipitation polymerization method in methanol as the progeny solvent. Batch adsorption experiments were carried out as a function of pH, Hg (II) imprinted polymer amount, adsorption and desorption time, volume, and concentration of eluent. The synthesized polymer particles were characterized physically and morphologically by using infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, and scanning electron microscopic techniques. The maximum adsorption capacity of the ion-imprinted and non-imprinted sorbent was 27.96 and 7.89 mg g(-1), respectively. Under optimal conditions, the detection limit for mercury was 0.01 μg L(-1) and the relative standard deviation was 3.2 % (n = 6) at the 1.00 μg L(-1). The procedure was applied to determination of mercury in fish and water samples with satisfactory results.
我们描述了一种纳米尺寸的汞（II）印迹聚合物，它是由甲基丙烯酸作为功能单体、乙二醇二甲基丙烯酸酯作为交联剂、2,2'-偶氮二异丁腈（AIBN）作为自由基引发剂、2,2'-二吡啶胺作为特异性配体以及汞（II）作为模板离子，通过沉淀聚合法在甲醇作为子代溶剂的条件下制备而成。进行了批量吸附实验，考察了pH值、汞（II）印迹聚合物用量、吸附和解吸时间、洗脱剂体积和浓度等因素的影响。通过红外光谱、热重分析、X射线衍射和扫描电子显微镜技术对合成的聚合物颗粒进行了物理和形态表征。离子印迹和非印迹吸附剂的最大吸附容量分别为27.96和7.89 mg g(-1)。在最佳条件下，汞的检测限为0.01 μg L(-1)，在1.00 μg L(-1)时相对标准偏差为3.2%（n = 6）。该方法应用于鱼类和水样中汞的测定，结果令人满意。
