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Recognition and determination of multi-metal ions based on silver nanoclusters capped by polyethyleneimine with different molecular weights
Qu, Fei1,2; Zhang, Qiandian1,2; You, Jinmao1,2,3
2015
发表期刊NEW JOURNAL OF CHEMISTRY
卷号39期号:12页码:9293-9298
文章类型Article
摘要Ag nanoclusters templated by hyperbranched polyethyleneimine (PEI) with different molecular weights have been developed as a new fluorescent platform for the sensitive and selective recognition of Hg2+, Cu2+, Co2+ and Ni2+ based on fluorescence quenching of the Ag nanoclusters. This sensing system shows good linear ranges and lower detection limits: the linear ranges are 0.1 nM to 10 mu M for Hg2+, 0.1 nM to 20 mu M for Cu2+, 1 nM to 20 mu M for Co2+, and 1 nM to 30 mu M for Ni2+; the limits of detection for Hg2+, Cu2+, Co2+, and Ni2+ are estimated to be 35 pM, 28 pM, 0.33 nM, and 0.30 nM, respectively. In addition, the different molecular weights of PEI reveal little effect on the sensitivity and linear ranges of detection. Most importantly, by adding different masking agents, the presence of Hg2+, Cu2+, Co2+ and Ni2+ could be selectively quantified without interference from other metal ions, for instance thymine was used for masking Hg2+, potassium pyrophosphate for masking Cu2+, nitrilotriacetic acid for masking Co2+ and dimethylglyoxime for masking Ni2+. On this basis, not only the content of a single type of metal ion but also the total amount of metal ions could be readily detected, which would further improve the convenience and practicability of metal ion sensors. Furthermore, this sensing system has been applied successfully for the detection of Hg2+, Cu2+, Co2+ and Ni2+ in real water samples.
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c5nj01867f
关键词[WOS]STABILIZED AG NANOCLUSTERS ; SELECTIVE DETECTION ; COLORIMETRIC DETECTION ; ROOM-TEMPERATURE ; AQUEOUS-SOLUTION ; SENSITIVE DETECTION ; FACILE SYNTHESIS ; TURN-ON ; HG-II ; FLUORESCENT
收录类别SCI
语种英语
项目资助者National Natural Science Foundation of China(21405093) ; Scientific Research Foundation of Qufu Normal University(BSQD20130117)
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000365222000029
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/6524
专题中国科学院西北高原生物研究所
作者单位1.Qufu Normal Univ, Key Lab Life Organ Anal, Qufu 273165, Shandong, Peoples R China
2.Qufu Normal Univ, Key Lab Pharmaceut Intermediates & Anal Nat Med, Qufu 273165, Shandong, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Peoples R China
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GB/T 7714
Qu, Fei,Zhang, Qiandian,You, Jinmao. Recognition and determination of multi-metal ions based on silver nanoclusters capped by polyethyleneimine with different molecular weights[J]. NEW JOURNAL OF CHEMISTRY,2015,39(12):9293-9298.
APA Qu, Fei,Zhang, Qiandian,&You, Jinmao.(2015).Recognition and determination of multi-metal ions based on silver nanoclusters capped by polyethyleneimine with different molecular weights.NEW JOURNAL OF CHEMISTRY,39(12),9293-9298.
MLA Qu, Fei,et al."Recognition and determination of multi-metal ions based on silver nanoclusters capped by polyethyleneimine with different molecular weights".NEW JOURNAL OF CHEMISTRY 39.12(2015):9293-9298.
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