Abstract：The cadmium ion imprinted polymer was prepared by precipitation polymerization method, which was then characterized using infrared spectrometer and scanning electron microscopy. The saturated adsorption capacity was 36.10 mg/g. The prepared imprinted polymer was used for the separation and enrichment of cadmium. The determination method of trace cadmium by flame atomic absorption spectrometry (FAAS) was established after separation and enrichment with cadmium ion imprinted polymer. The pH was adjusted to 5.5 with hydrochloric acid. The sample flow rate was controlled at 0.6 mL/min. After washing with 10 mL of water, the cadmium adsorbed on column could be fully eluted with 10.0 mL of 0.5 mol/L hydrochloric acid. The flow rate of eluting solution was controlled at 1.0 mL/min. The content of cadmium in eluant was determined by FAAS. The mass concentration of cadmium in range of 0.50-60.0 μg/L showed good linearity to the absorbance, and the linear correlation coefficient was 0.999 0. The detection limit was 0.18 μg/L. The proposed method was applied to the determination of cadmium in river samples. The determination results were consistent with those obtained by atomic fluorescence spectrometry (AFS). The relative standard deviations (RSD, n=6) were between 1.6% and 2.5%. The recoveries were between 95% and 103%.
王爱香. 镉离子印迹聚合物分离富集-火焰原子吸收光谱法测定痕量镉[J]. 冶金分析, 2016, 36(6): 29-34.
WANG Ai-xiang. Determination of trace cadmium by flame atomic absorption spectrometry after separation and enrichment with cadmium ion imprinted polymer. , 2016, 36(6): 29-34.
李咏梅,王新宇,陈蕾,等.镉-邻菲啰啉-曙红Y-缔合体系光度法测定痕量镉[J].冶金分析,2011,31(9):78-80.LI Yong-mei,WANG Xin-yu,CHEN Lei,et al.Spectrophotometric determination of trace cadmium with cadmium-o-phenanthroline-eosin Y complex system[J].Metallurgical Analysis,2011,31(9):78-80.
[2]
沈昱,吴艳波,刘淑红,等.污水中镉含量的分光光度法测定[J].大连交通大学学报,2016,37(1):78-82.SHEN Yu,WU Yan-bo,LIU Shu-hong,et al.Determination of cadmium insewage by spectrophotometry[J].Journal of Dalian Jiaotong University,2016,37(1):78-82.
[3]
Alieva R A,Gamidov S Z,Chyragov F M,et al.Preconcentration of cadmium and zinc on a chelating sorbent and their determination by flame atomic absorption spectrometry[J].Journal of Analytical Chemistry,2005,60(12):1114-1117.
[4]
王增焕,王许诺. 萃取分离-原子吸收光谱法测定海水中镉铜铅锌铬镍[J].冶金分析,2014,34(2):44-47. WANG Zeng-huan,WANG Xu-nuo.Determination of cadmium,copper,lead,zinc,chromium and nickel in seawater by atomic absorption spectrometry after extraction separation[J].Metallurgical Analysis,2014,34(2):44-47.
[5]
刘彤彤,徐文军,李倩,等.顺序注射氢化物发生-原子荧光光谱法同时测定环境水样中砷和镉[J].广东微量元素科学,2013,20(3):18-23.LIU Tong-tong,XU Wen-jun,LI Qian,et al.Determination of arsenic and cadmium in water by sequential injection hydride generation atom fluorescence spectrometry[J].Guangdong Trace Elements Science,2013,20(3):18-23.
[6]
农云军,谢继丹,黄名湖,等.超声提取-ICP-MS法测定土壤中有效态铅和镉[J].质谱学报,2016,37(1):68-74.NONG Yun-jun,XIE Ji-dan,HUANG Ming-hu,et al.Measurement of available lead and cadmium in soil by ICP-MS with ultrasonic extraction[J].Journal of Chinese Mass Spectrometry Society,2016,37(1):68-74.
[7]
Rajawat D S,Kumar N,Satsangee S P.Trace determination of cadmium in water using anodic stripping voltammetry at a carbon paste electrode modified with coconut shell powder[J].Journal of Analytical Science and Technology,2014,5:19-26.
[8]
邵敏,宋虎跃,沈芳存,等.液滴微萃取-石墨炉原子吸收光谱法测定环境水样中痕量镉[J].冶金分析,2011,31(2):52-55.SHAO Min,SONG Hu-yue,SHEN Fang-cun,et al.Determination of trace cadmium in environmental water samples by graphite furnace atomic absorption spectrometry combined with droplet microextraction[J].Metallurgical Analysis,2011,31(2):52-55.
[9]
刘开宇,朱吉庆.泡沫浮选萃取法分离镉锌[J].中南工业大学学报,2000,31(2):141-144.LIU Kai-yu ,ZHU Ji-qing. Separation of Cd2+/Zn2+ by flotaextraction method[J].Journal of Central South University of Technology,2000,31(2):141-144.
[10]
吴玉萍,夏振远,王东丹,等. 离子交换富集-火焰原子吸收光谱法测定卷烟辅料中镉[J].理化检验:化学分册,2006,42(11):897-899.WU Yu-ping,XIA Zhen-yuan,WANG Dong-dan,et al.FAAS determination of cadmium in supplementary materials of tobacco manufacturing after enrichment by ion exchange[J].Physical Testing and Chemical Analysis Part B: Chemical Analysis,2006,42(11):897-899.
[11]
Ezoddin M,Majidi B,Abdi K,et al.Magnetic graphene-dispersive solid-phase extraction for preconcentration and determination of lead and cadmium in dairy products and water samples[J].Bulletin of Environmental Contamination and Toxicology,2015,95:830-835.
[12]
Bagheri H,Asgharinezhad A A,Ebrahimzadeh H.Determination of trace amounts of Cd,Cu,and Ni in food samples using a novel functionalized magnetic nanosorbent[J].Food Analytical Methods,2016,9(4):876-888.
[13]
郭秀春,周文辉.分子印迹技术研究进展[J].化学研究,2012,23(5):103-110.GUO Xiu-chun,ZHOU Wen-hui.Research progress of molecular imprinting technology[J].Chemical Research,2012,23(5):103-110.
[14]
石莹莹,张强华,熊清平,等.印迹壳聚糖/凹土分离富集-FAAS测定水中痕量镉[J].分析试验室,2011,30(11):56-59.SHI Ying-ying,ZHANG Qiang-hua,XIONG Qing-ping,et al.The determination of a trace amount of Cd in water by FAAS after separation and preconcentration with imprinting of chitosan/attapulgite[J].Chinese Journal of Analysis Laboratory,2011,30(11):56-59.
