NWIPB OpenIR
Recognition and determination of multi-metal ions based on silver nanoclusters capped by polyethyleneimine with different molecular weights
Qu, Fei ; Zhang, Qiandian ; You, Jinmao
2015
发表期刊NEW JOURNAL OF CHEMISTRY
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.
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/48250
专题中国科学院西北高原生物研究所
推荐引用方式
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.
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.
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 (2015).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Qu, Fei]的文章
[Zhang, Qiandian]的文章
[You, Jinmao]的文章
百度学术
百度学术中相似的文章
[Qu, Fei]的文章
[Zhang, Qiandian]的文章
[You, Jinmao]的文章
必应学术
必应学术中相似的文章
[Qu, Fei]的文章
[Zhang, Qiandian]的文章
[You, Jinmao]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。