Preparation of a Novel Bi-imprinted Adsorbent for Pb(Ⅱ) and Its Application to FAAS Determination of Trace Amount of Lead in Water Sample
摘 要
采用分子印迹技术,以3-疏基丙基三甲氧基硅烷为功能单体,铅离子和十六烷基三甲基溴化铵(CTMAB)为双模板形式络合体系,并加入由四乙氧基硅烷和甲醇所形成的溶胶,用氢氧化钠作催化剂制得铅离子双印迹吸附剂。经红外光谱法和氮气吸附-脱附系统对此吸附剂的结构特征及表面性能进行表征和分析。结果表明:在印迹吸附剂中除去铅(Ⅱ)离子模板后,恢复了-SH官能团;CTMAB的存在具有提高表面积和孔径的倾向。此双印迹吸附剂在静态条件下,对铅(Ⅱ)离子的吸附经10 min,吸附率达95%。吸附容量达545.6 mg·g-1。在镉(Ⅱ)离子共存下,相对选择性系数为192。用0.5 mol·L-1硝酸溶液5 mL即可从吸附剂上洗脱94.4%铅(Ⅱ)。以此吸附剂作为萃取材料分离富集了环境水样中痕量铅(Ⅱ),洗脱后用原子吸收光谱法测定其中铅(Ⅱ)量,测定值的回收率在104%~106%之间。
Abstract
A novel bi-imprinted adsorbent for Pb(Ⅱ) (abbr. as Pb-BIA) was prepared by the molecular imprinting technique using MPS as functional isomer, Pb(Ⅱ)-ion and CTMAB as pattern plates, TEOS (in CH3OH) as sol and NaOH solution as catalyst. Its structural features and surface properties were characterised and studied by FT-IRS and ASAP2010 system. It was shown that in the BIA, Pb(Ⅱ)-pattern plate was removed and functional group of -SH was resumed, and that its surface area and bore diameter were raised by the presence of CTMAB. It was found that under static condition, rate of adsorption of Pb(Ⅱ) by the BIA attained to 95% in 10 min; the maximum adsorption capacity was found to be 545.6 mg·g-1; and the relative selectivity coefficient found was 192 in the presence of Cd(Ⅱ). Rate of desorption of Pb(Ⅱ) from BIA attained to 94.4% when eluted with 5 mL of 0.5 mol·L-1 HNO3 solution. The BIA was used as extractant in SPE for separation and enrichment of traces of Pb(Ⅱ) in an enviromental water sample, and Pb(Ⅱ) was eluted from the column, and determined by FAAS. Values of recovery were found in the range of 104% to 106%.
中图分类号 O657.31
所属栏目 工作简报
基金项目
收稿日期 2013/10/12
修改稿日期
网络出版日期
作者单位点击查看
备注王丽敏(1970-),女,吉林通榆人,副教授,博士,研究方向为环境分析技术和环境化学。
引用该论文: WANG Li-min,LI Ying-hua. Preparation of a Novel Bi-imprinted Adsorbent for Pb(Ⅱ) and Its Application to FAAS Determination of Trace Amount of Lead in Water Sample[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2014, 50(5): 589~593
王丽敏,李英华. 铅离子双印迹吸附剂的制备及其在原子吸收光谱法测定水中痕量铅中的应用[J]. 理化检验-化学分册, 2014, 50(5): 589~593
被引情况:
【1】孙玉凤,张敬瑶, "γ-MnO2的制备及其吸附除铬的性能",理化检验-化学分册 51, 496-501(2015)
【2】万春艳,谢义梅,王蓉,吴少尉, "固相萃取-火焰原子吸收光谱法测定水体中的痕量铁",理化检验-化学分册 51, 1468-1470(2015)
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】PEKER D S K, TURKOGLU O. Dysprosium(Ⅲ) hydroxide coprecipitation system for the separation and preconcentration of heavy metal contents of table salts and natural waters[J]. J Hazard Mater, 2007,143(1/2):555-560.
【2】FARAJZADEH M A, BAHRAM M, ZORITA S, et al. Optimization and application of homogeneous liquid-liquid extraction in preconcentration of copper(Ⅱ) in a ternary solvent system[J]. J Hazard Mater, 2009,161(2/3):1535-1543.
【3】SULEIMAN J S, HU Bin, PENG Han-yong, et al. Separation/preconcentration of trace amounts of Cr, Cu and Pb in environmental samples by magnetic solid-phase extraction with Bismuthiol-II-immobilized magnetic nanoparticles and their determination by ICP-OES[J]. Talanta, 2009,77(5):1579-1583.
【4】CITAK D, TUZEN M. A novel preconcentration procedure using cloud point extraction for determination of lead, cobalt and copper in water and food samples using flame atomic absorption spectrometry[J]. Food and Chemical Toxicology, 2010,48(5):1399-1404.
【5】张海霞,朱彭龄.固相萃取[J].分析化学, 2000,28(9):1172-1180.
【6】蔡亚岐,牟世芬.分子印迹固相萃取及其应用[J].分析测试学报, 2005,24(5):116-121.
【7】黄健祥,胡玉斐,潘家亮,等.分子印迹样品前处理技术的研究进展[J].中国科学(B辑:化学), 2009,39(8):733-746.
【8】杨眉,侯长军,霍丹群,等.分子印迹固相萃取材料在痕量物质检测中的研究进展[J].材料导报, 2012,26(4):69-73.
【9】黄运红,许杨,杜碧柏,等.分子印迹柱-高效液相色谱法测定猪肉中磺胺嘧啶[J].分析化学, 2012,40(7):1011-1018.
【10】韦寿莲,郭小君,汪洪武,等.咖啡因分子印迹固相萃取柱的制备及应用[J].分析化学, 2012,40(7):1071-1075.
【11】林福华,黄晓佳,袁东星,等.双酚A分子印迹聚合物为萃取介质搅拌饼固相萃取的制备及其萃取性能研究[J].分析化学, 2012,40(2):243-248.
【2】FARAJZADEH M A, BAHRAM M, ZORITA S, et al. Optimization and application of homogeneous liquid-liquid extraction in preconcentration of copper(Ⅱ) in a ternary solvent system[J]. J Hazard Mater, 2009,161(2/3):1535-1543.
【3】SULEIMAN J S, HU Bin, PENG Han-yong, et al. Separation/preconcentration of trace amounts of Cr, Cu and Pb in environmental samples by magnetic solid-phase extraction with Bismuthiol-II-immobilized magnetic nanoparticles and their determination by ICP-OES[J]. Talanta, 2009,77(5):1579-1583.
【4】CITAK D, TUZEN M. A novel preconcentration procedure using cloud point extraction for determination of lead, cobalt and copper in water and food samples using flame atomic absorption spectrometry[J]. Food and Chemical Toxicology, 2010,48(5):1399-1404.
【5】张海霞,朱彭龄.固相萃取[J].分析化学, 2000,28(9):1172-1180.
【6】蔡亚岐,牟世芬.分子印迹固相萃取及其应用[J].分析测试学报, 2005,24(5):116-121.
【7】黄健祥,胡玉斐,潘家亮,等.分子印迹样品前处理技术的研究进展[J].中国科学(B辑:化学), 2009,39(8):733-746.
【8】杨眉,侯长军,霍丹群,等.分子印迹固相萃取材料在痕量物质检测中的研究进展[J].材料导报, 2012,26(4):69-73.
【9】黄运红,许杨,杜碧柏,等.分子印迹柱-高效液相色谱法测定猪肉中磺胺嘧啶[J].分析化学, 2012,40(7):1011-1018.
【10】韦寿莲,郭小君,汪洪武,等.咖啡因分子印迹固相萃取柱的制备及应用[J].分析化学, 2012,40(7):1071-1075.
【11】林福华,黄晓佳,袁东星,等.双酚A分子印迹聚合物为萃取介质搅拌饼固相萃取的制备及其萃取性能研究[J].分析化学, 2012,40(2):243-248.
相关信息