Erciyes University, Faculty of Science, Chemistry Department, Kayseri, Turkey.
J Trace Elem Med Biol. 2013 Apr;27(2):85-90. doi: 10.1016/j.jtemb.2012.07.007. Epub 2012 Sep 13.
An on-line flow injection pre-concentration-flame atomic absorption spectrometry method was developed to determine trace zinc in water (tap, dam, and well water), biological (hair and nail), and liver samples. As a solid phase extractant, a synthesized new chelating resin, poly(2-thiozylmethacrylamide-co-divinylbenzene-co-2-acrylamido-2-methyl-1-propane sulfonic acid) was used. The resin was characterized by Fourier transform infrared spectroscopy, elemental analysis, and surface area by nitrogen sorption. A pre-concentration factor of 40-fold for a sample volume of 12.6 mL was obtained by using the time-based technique. The detection limit for the pre-concentration method was found to be 2.2 μg L(-1). The precision (as RSD,%) for 10 replicate determinations at the 0.04 μg mL(-1) Zn concentration was 1.2%. The calibration graph using the pre-concentration system for zinc was linear with a correlation coefficient of 0.998 in the concentration range from 0.005 to 0.05 μg mL(-1). The applicability and accuracy of the developed method were estimated by the analysis spiked water, biological, liver samples (83-105%), and also certified reference material TMDA-70 (fortified lake water) and SPS-WW1 Batch 111-Wastewater. The results were in agreement with the certified values.
一种在线流动注射预浓缩-火焰原子吸收光谱法被开发用于测定水中（自来水、河水和井水）、生物（头发和指甲）和肝样中的痕量锌。作为一种固相萃取剂，使用了一种合成的新型螯合树脂，聚（2-巯基乙酰胺基甲基丙烯酰胺-co-二乙烯基苯-co-2-丙烯酰胺基-2-甲基-1-丙磺酸）。树脂通过傅里叶变换红外光谱、元素分析和氮气吸附表面积进行了表征。通过基于时间的技术，对于 12.6 mL 的样品体积，可获得 40 倍的预浓缩因子。发现预浓缩方法的检测限为 2.2 μg L(-1)。在 0.04 μg mL(-1) Zn 浓度下进行 10 次重复测定的精密度（以 RSD，%表示）为 1.2%。使用预浓缩系统对锌进行的校准曲线在 0.005 至 0.05 μg mL(-1) 的浓度范围内具有 0.998 的相关系数。通过分析加标水、生物、肝样（83-105%）以及认证参考物质 TMDA-70（富营养化湖水）和 SPS-WW1 Batch 111-废水来评估所开发方法的适用性和准确性。结果与认证值一致。
