Evidence map›Paper›PMID 29754164›Full record

ArticleMikrochimica acta2018

Time-resolved determination of Fe(II) ions using cysteine-bridged Mn-doped ZnS quantum dots as a phosphorimetric probe.

Wenjie Jing, Yuexiang Lu, Feiyang Wang, Liuying He, Jingwei Sun, Yueying Liu

Abstract read
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In one paragraph

Article in Mikrochimica acta, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.7field-weighted citation impact, top 30% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 15 citations in OpenAlex.

  1. Development of Time-Resolved Luminescence Measurement Instruments for Biosensing and Bioimaging - An Overview.Measurement : journal of the International Measurement Confederation · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Wenjie JingDepartment of Chemistry, Capital Normal University, Xisanhuan North Rd. 105, Beijing, 100048, People's Republic of China.
Yuexiang LuInstitute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, People's Republic of China.
Feiyang WangDepartment of Chemistry, Capital Normal University, Xisanhuan North Rd. 105, Beijing, 100048, People's Republic of China.
Liuying HeDepartment of Chemistry, Capital Normal University, Xisanhuan North Rd. 105, Beijing, 100048, People's Republic of China.
Jingwei SunDepartment of Chemistry, Capital Normal University, Xisanhuan North Rd. 105, Beijing, 100048, People's Republic of China.
Yueying LiuDepartment of Chemistry, Capital Normal University, Xisanhuan North Rd. 105, Beijing, 100048, People's Republic of China. yueyingliu@cnu.edu.cn.ORCID 0000-0001-5335-3334
Capital Normal University · CNKey Laboratory of Nuclear Radiation and Nuclear Energy Technology · CN

Funding

Beijing Natural Science Foundation No. 2162010Scientific Research Project of Beijing Educational Committee No. KM201610028008the National Natural Science Foundation of China No. 21105066the National Natural Science Foundation of China No. 21775087
6 · The paper itself

Abstract

A time-resolved phosphorescence (TRP) is applied to the highly sensitive determination of Fe(II) ions. The method is based on the use of a phosphorescent probe consisting of cysteine-bridged Mn-doped ZnS quantum dots (Mn/ZnS QDs). The presence of cysteine enhances the phosphorescence of the QDs and also increases the efficiency of quenching caused by Fe(II) ions. This results in strongly improved selectivity for Fe(II). The linear response is obtained in the concentration range of 50-1000 nM with a 19 nM detection limit. Phosphorescence is recorded at excitation/emission peaks of 301/602 nm. The interference of short-lived fluorescent and scattering background from the biological fluids is eliminated by using the TRP mode with a delay time of 200 μs. The determination of Fe(II) in human serum samples spiked at a 150 nM level gave a 92.4% recovery when using the TRP mode, but only 52.4% when using steady-state phosphorescence. This demonstrates that this probe along with TRP detection enables highly sensitive and accurate determination of Fe(II) in serum. Graphical abstract Schematic of a novel phosphorescent method for the detection of Fe

Indexed as

Biological fluidsCysteineDelay timeFerrous ionsPhosphorescence assayPhosphorescence probeQuantum dots

Identifiers

PMID29754164
OpenAlexW2800377756

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.