School of Material Science and Engineering of Xi'an Jiao Tong University, Xi'an 710049, China; Department of Chemistry, Yanbei Normal Institute, Datong 037000, China.
Talanta. 2004 Jan 9;62(1):207-13. doi: 10.1016/S0039-9140(03)00423-5.
2-Aminoacetylthiophenol (AATP)-modified Amberlite XAD-2 has been synthesized by coupling it through NNNH group. The resulting chelating resin, characterized by elemental analysis, thermogravimetric analysis (TGA) and infrared (IR) spectra, was used to preconcentrate Cd, Hg, Ag, Ni, Co, Cu and Zn ions. Several parameters, such as distribution coefficient and sorption capacity of the chelating resin, pH and flow rates of uptake and striping, volume of sample and eluent, were evaluated. The effects of electrolytes and cations on the preconcentration were also investigated. The recoveries were >96%. The procedure was validated by standard addition and analysis of a standard reference sediment material (GBW 07309 China). The developed method was utilized for preconcentration and determination of Cd, Hg, Ag, Ni, Co, Cu and Zn in tap water, river water and sediment samples by inductively coupled plasma-atomic emission spectrometry (ICP-AES) with satisfactory results. The 3sigma detection limits for Cd, Hg, Ag, Ni, Co, Cu and Zn were found to be 0.10, 0.23, 0.41, 0.13, 0.25, 0.39 and 0.58mugl(-1), respectively. The relative standard deviation of the determination was <10%.
2-氨乙酰硫酚（AATP）修饰的 Amberlite XAD-2 通过 NNNH 基团偶联合成。用元素分析、热重分析（TGA）和红外（IR）光谱对所得螯合树脂进行了表征，用于预浓缩 Cd、Hg、Ag、Ni、Co、Cu 和 Zn 离子。评价了螯合树脂的分配系数和吸附容量、pH 值和上样及洗脱流速、样品和洗脱液体积等参数。还研究了电解质和阳离子对预浓缩的影响。回收率>96%。通过标准加入和对标准参考沉积物材料（中国 GBW 07309）的分析验证了该程序。该方法已用于通过电感耦合等离子体原子发射光谱法（ICP-AES）对自来水中、河水中和沉积物样品中的 Cd、Hg、Ag、Ni、Co、Cu 和 Zn 进行预浓缩和测定，结果令人满意。Cd、Hg、Ag、Ni、Co、Cu 和 Zn 的 3sigma 检测限分别为 0.10、0.23、0.41、0.13、0.25、0.39 和 0.58μg/L。测定的相对标准偏差<10%。
