ArticleAnalytical biochemistry1995
A lifetime-based fluorescence resonance energy transfer sensor for ammonia.
Article in Analytical biochemistry, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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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.
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.
Who cites it
4 citing papers in PubMed.
- Spectroscopic Investigation of DCCH and FTSC as a potential pair for Förster Resonance Energy Transfer in different solvents.PloS one · 2020Article
- Fast responsive, optical trace level ammonia sensor for environmental monitoring.Chemistry Central journal · 2012Article
- A fluorescence lifetime-based solid sensor for water.Analytica chimica acta · 1997Article
- Long-lifetime metal-ligand pH probe.Analytical biochemistry · 1997Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
A lifetime-based optical NH3 sensor based on the principle of fluorescence resonance energy transfer was developed. The sensor consisted of sulforhodamine 101 as the donor, bromocresol green as the acceptor, ethyl cellulose as the polymer support, and tributyl phosphate as the plasticizer. When the concentration of NH3 changed, it caused a change in the decay time of the SR101, which was measured by phase-modulation fluorometry. At 100 MHz, increasing the concentration of NH3 from 0 to 175 ppm resulted in a decrease in phase angle of about 31 degrees and an increase in modulation of about 18%. Oxygen and carbon dioxide did not interfere with the sensor. However, a 30% relative humidity could cause a downward shift of the response by 5 degrees, while additional increase in the relative humidity to 100% showed little further effect. For a film thickness of 40 microns, the typical response and recovery times for 90% of total signal change were 1 and 2.5 min, respectively. The phase angle measurements for the same sample were reproducible for 5 days, with no special care of the film sample.
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Registered trials
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