气候变化领域集成服务门户(CCPortal): Ultrasensitive and highly selective detection of strontium ions

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DOI	10.1038/s41893-023-01095-8
	Ultrasensitive and highly selective detection of strontium ions
	Feng, Lijuan; Wang, Hui; Liu, Tingting; Feng, Tiantian; Cao, Meng; Zhang, Jiacheng; Liu, Tao; Guo, Zhanhu; Galiotis, Costas; Yuan, Yihui; Wang, Ning
发表日期	2022
ISSN	2398-9629
页码	11
英文摘要	Strontium-90 is one of the most frequently released radioactive products in waste discharged from nuclear reactors. With a long half-life and chemical similarity to calcium, this radioisotope takes hundreds of years to decay to negligible levels and can accumulate in the food chain and bones, resulting in serious health hazards. As a result, there is growing interest in its fate and dispersion in the environment. However, the identification of Sr-90 remains a challenge due to the absence of characteristic energy rays signifying its presence. Here we show a biosensor that enables the detection of Sr2+ ions in an ultrasensitive and highly selective manner. Our approach takes advantage of a fluorogenic dye, thioflavin T, which triggers the folding of DNA to form guanine-quadruplex structures. Owing to the high binding affinity of this DNA structure, on exposure to a trace amount of Sr2+ ions, thioflavin T is readily replaced, leading to attenuation of the fluorescence intensity and a detection limit of 2.11 nM. Our work could contribute to the sustainability of nuclear power by providing a technological solution to monitor the transportation of radioactive strontium pollution in the environment, a notable advance, especially after the recent Fukushima nuclear incident. Dealing with radioactive pollution first requires the detection of radioactive species released to the environment. Here the authors show an ultrasensitive and selective way to detect Sr-90, one of the most frequently discharged products from nuclear reactors.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000956684200001
来源期刊	NATURE SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272767
作者单位	Hainan University; Northumbria University; University of Patras
推荐引用方式 GB/T 7714	Feng, Lijuan,Wang, Hui,Liu, Tingting,et al. Ultrasensitive and highly selective detection of strontium ions[J],2022:11.
APA	Feng, Lijuan.,Wang, Hui.,Liu, Tingting.,Feng, Tiantian.,Cao, Meng.,...&Wang, Ning.(2022).Ultrasensitive and highly selective detection of strontium ions.NATURE SUSTAINABILITY,11.
MLA	Feng, Lijuan,et al."Ultrasensitive and highly selective detection of strontium ions".NATURE SUSTAINABILITY (2022):11.