铜掺杂ZnSe糖心产精国品免费入口*完整版糖心产精国品免费入口*完整版测定镉(Ⅱ)
Determination of Cadmium(Ⅱ) with Cu-Doped ZnSe Quantum Dots as Fluorescence Probe
摘 要
基于镉(Ⅱ)与ZnSe/Cu糖心产精国品免费入口*完整版之间的荧光猝灭作用,提出了用ZnSe/Cu糖心产精国品免费入口*完整版作为糖心产精国品免费入口*完整版测定镉的方法。通过微波辅助加热,在水溶液中合成了巯基丙酸修饰的ZnSe/Cu糖心产精国品免费入口*完整版。用荧光光谱、紫外光谱研究了ZnSe/Cu糖心产精国品免费入口*完整版与镉(Ⅱ)的相互作用。在pH为7.4的三羟甲基氨基甲烷-盐酸缓冲溶液和1.5×10-4mol·L-1 ZnSe/Cu糖心产精国品免费入口*完整版溶液中测定镉(Ⅱ)。镉(Ⅱ)的质量浓度在0.025~0.40 mg·L-1范围与ZnSe/Cu糖心产精国品免费入口*完整版荧光猝灭强度呈线性关系,方法的检出限(3s/k)为0.021 6 mg·L-1。方法应用于水样的测定,回收率为98.0%,102%。对0.15 mg·L-1镉(Ⅱ)标准溶液测定11次,测定值的相对标准偏差为6.7%。
糖心产精国品免费入口*完整版
镉(Ⅱ)
Quantum dots
糖心产精国品免费入口*完整版
Cd(Ⅱ)
Abstract
A method for determination of cadmium(Ⅱ) with Cu-doped ZnSe quantum dots (ZnSe/Cu QDs) as fluorescence probe was proposed based on the fluorescence quenching effect of ZnSe/Cu QDs with cadmium(Ⅱ). ZnSe/Cu QDs modified with mercaptopropionic acid was synthesized with microwave-assisted heating in water solution. Interaction between ZnSe/Cu QDs and cadmium(Ⅱ) was investigated by fluorescence spectra and UV spectra. Cadmium(Ⅱ) was determined in Tris-HCl buffer solution of pH 7.4 and 1.5×10-4mol·L-1 ZnSe/Cu QDs solution. Linear relationship between values of fluorescence quenching intensity of ZnSe/Cu QDs and mass concentration of cadmium(Ⅱ) was obtained in the range of 0.025-0.40 mg·L-1, with detection limit (3s/k) of 0.021 6 mg·L-1. The proposed method was used to determination of water samples with values of recovery of 98.0% and 102%. Precision of the method was tested with 0.15 mg·L-1 cadmium(Ⅱ) standard solution for 11 determination, value of RSD found was 6.7%.
中图分类号 O657.32
所属栏目 工作简报
基金项目 广西自然科学基金项目(2011GXNSFA018045);广西研究生教育创新计划项目(2009105960703M17)
收稿日期 2013/11/26
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备注糖心产精国品免费入口*完整版(1957-),女,山东邹城人,教授,博士,研究方向为环境分析化学。
引用该论文: HOU Ming,YAN Xiao-ya. Determination of Cadmium(Ⅱ) with Cu-Doped ZnSe Quantum Dots as Fluorescence Probe[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2014, 50(12): 1508～1512
糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版. 铜掺杂ZnSe糖心产精国品免费入口*完整版糖心产精国品免费入口*完整版测定镉(Ⅱ)[J]. 理化检验－化学分册, 2014, 50(12): 1508～1512
被引情况:
【1】 张雪梅,陈 飞,崔书亚,何志坚,杜军良, "功能化温控离子液体萃取-火焰原子吸收光谱法测定痕量镉",理化检验－化学分册 51, 1501-1504(2015)
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【20】 LIU Jun-xiao, CHEN Hui, LIN Zhen, et al. Preparation of surface imprinting polymer capped Mn-doped ZnS quantum dots and their application for chemiluminescence detection of 4-nitrophenol in tap water［J］. Analytical Chemistry, 2010,82(17):7380-7386.
【21】 陈启凡,杨冬芝,徐淑坤,等.微波辐射法制备水溶性CdTe糖心产精国品免费入口*完整版及其光谱学研究［J］.光谱学与光谱分析, 2007,27(4):650-653.
【22】 沈坤,糖心产精国品免费入口*完整版,那佳.微波辐射法制备水溶性CdTe/ZnS糖心产精国品免费入口*完整版及其与司帕沙星的作用［J］.分析试验室, 2011,30(1):5-9.
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【24】 杨淑平,金鑫,郑佳,等.高性能CdTe/CdS核壳型糖心产精国品免费入口*完整版的制备及应用于小麦面粉中呕吐毒素的荧光免疫检测研究［J］.化学学报, 2011,69(6):687-692.
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【26】 戚丽,吴芳英.ZnS:Mn糖心产精国品免费入口*完整版作为荧光离子探针测定痕量铜(Ⅱ)［J］.南昌大学学报:理科版, 2012,36(1):50-53.
【27】 杨曼曼,杨频,张立伟.荧光法研究咖啡酸类药物与白蛋白的作用［J］.科学通报, 1994,39(1):31-35.
【2】 张明英,宋娟.5-Br-DMPAP-OP双波长吸光光度法测定微量锌镉［J］.理化检验-化学分册, 1994,30(5):292-293.
【3】 HASAN C, MEHMET E K. Determination of cadmium levels in agricultural areas of carsamba and Bafra plains［J］. Environ Monit Assess, 2007,132(1/3):165-169.
【4】 陈秋生,刘烨潼,张强,等.电感耦合等离子体质谱法同时测定葡萄中40种痕量元素［J］.理化检验-化学分册, 2013,49(6):686-690.
【5】 陈芙,方军,吴升海.基于阳极溶出伏安法(HM-3000P)测定食品中镉的应用［J］.现代科学仪器, 2013(1):16-18.
【6】 JOHNSON D K. A fluorescence polarization immunoassay for cadmium(Ⅱ)［J］. Anal Chim Acta, 1999,399(1/2):161-172.
【7】 DARWISH I A, BLAKE D A. Development and validation of a one-step immunoassay for determination of cadmium in human serum［J］. Analytical Chemistry, 2002,74(1):52-58.
【8】 KHOSRAVIANI M, PAVLOV A R, FLOWERS G C, et al. Detection of heavy metals by immuno-assay: optimization and validation of a rapid, portable assay for ionic cadmium［J］. Environ Sci Technol, 1998,32(1):137-142.
【9】 BLAKE D A, JONES R M, BLAKEII R C. Antibody-based sensors for heavy metal ions［J］. Biosensors and Bioelectronics, 2001,16(9/12):799-809.
【10】 LI Hai-bing, ZHANG Yan, WANG Xiao-qiong. l-Carnitine capped quantum dots as luminescent probes for cadmium ions［J］. Sensors and Actuators B: Chemical, 2007,127(2):593-597.
【11】 HUANG Feng-hua, CHEN Guo-nan. Preparation and application ofl-cysteine-modified CdSe/CdS core/shell nanocrystals as a novel fluorescence probe for detection of nucleic acid［J］. Spectrochimica Acta Part A, 2008,70(2):318-323.
【12】 糖心产精国品免费入口*完整版,那佳,沈坤.CdTe/CdS糖心产精国品免费入口*完整版糖心产精国品免费入口*完整版测定司帕沙星含量［J］.化学学报, 2010,68(14):1437-1442.
【13】 杜保安,刘澄,曹雨虹,等.CdTe糖心产精国品免费入口*完整版作糖心产精国品免费入口*完整版检测微量铅的方法研究［J］.光谱学与光谱分析, 2013,33(5):1266-1269.
【14】 GAO Xue, WANG Chao, NIU Lu, et al. Aqueous synthesis of Cu-doped ZnSe quantum dots［J］. Journal of Luminescence, 2011,131(7):1300-1304.
【15】 ZHANG Ya-ping, SHEN Yu-hua, WANG Xiu-fang, et al. Enhancement of blue fluorescence on the ZnSe quantum dots doped with transition metal ions［J］. Materials Letters, 2012,78:35-38.
【16】 XIE Rui-shi, ZHANG Xing-quan, LIU Hai-feng, et al. Facile and large-scale synthesis of water-soluble Fe:ZnSe semiconductor nanocrystals［J］. Materials Letters, 2013,100:47-50.
【17】 WANG Chao, GAO Xue, MA Qiang, et al. Aqueous synthesis of mercaptopropionic acid capped Mn2+-doped ZnSe quantum dots［J］. Journal of Materials Chemistry, 2009,19:7016-7022.
【18】 TU Ren-yong, LIU Bian-hua, WANG Zhen-yang, et al. Amine-capped ZnS-Mn2+ nanocrystals for fluorescence detection of trace TNT explosive［J］. Analytical Chemistry, 2008,80(9):3458-3465.
【19】 HE Yu, WANG He-fang, YAN Xiu-ping. Exploring Mn-doped ZnS quantum dots for the room-temperature phosphorescence detection of enoxacin in biological fluids［J］. Analytical Chemistry, 2008,80(10):3832-3837.
【20】 LIU Jun-xiao, CHEN Hui, LIN Zhen, et al. Preparation of surface imprinting polymer capped Mn-doped ZnS quantum dots and their application for chemiluminescence detection of 4-nitrophenol in tap water［J］. Analytical Chemistry, 2010,82(17):7380-7386.
【21】 陈启凡,杨冬芝,徐淑坤,等.微波辐射法制备水溶性CdTe糖心产精国品免费入口*完整版及其光谱学研究［J］.光谱学与光谱分析, 2007,27(4):650-653.
【22】 沈坤,糖心产精国品免费入口*完整版,那佳.微波辐射法制备水溶性CdTe/ZnS糖心产精国品免费入口*完整版及其与司帕沙星的作用［J］.分析试验室, 2011,30(1):5-9.
【23】 YANG Ping, LU Meng-kai, ZHOU Guang-jun, et al. Photoluminescence characteristics of ZnS nanocrystallites co-doped with Co2+ and Cu2+［J］. Inorganic Chemistry Communications, 2001,4(12):734-737.
【24】 杨淑平,金鑫,郑佳,等.高性能CdTe/CdS核壳型糖心产精国品免费入口*完整版的制备及应用于小麦面粉中呕吐毒素的荧光免疫检测研究［J］.化学学报, 2011,69(6):687-692.
【25】 ALI E M, ZHENG Yuan-gang, YU H H, et al. Ultrasensitive Pb2+ detection by glutathione-capped quantum dots［J］. Analytical Chemistry, 2007,79(24):9452-9458.
【26】 戚丽,吴芳英.ZnS:Mn糖心产精国品免费入口*完整版作为荧光离子探针测定痕量铜(Ⅱ)［J］.南昌大学学报:理科版, 2012,36(1):50-53.
【27】 杨曼曼,杨频,张立伟.荧光法研究咖啡酸类药物与白蛋白的作用［J］.科学通报, 1994,39(1):31-35.
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