S, N-doped carbon quantum dots enhanced Luminol-Mn(IV) chemiluminescence reaction for detection of uric acid in biological fluids

2020 ◽  
Vol 156 ◽  
pp. 104841 ◽  
Author(s):  
Tooba Hallaj ◽  
Mohammad Amjadi ◽  
Fatemeh Mirbirang
Keyword(s):  
Quantum Dots ◽  
Uric Acid ◽  
Biological Fluids ◽  
Carbon Quantum Dots

Dual-signal Uric Acid Sensing Based on Carbon Quantum Dots and o-Phenylenediamine

2021 ◽  
pp. 119678
Author(s):  
Chunling Yuan ◽  
Xiu Qin ◽  
Yuanjin Xu ◽  
Rui Shi ◽  
Shiqi Cheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Uric Acid ◽  
Carbon Quantum Dots

scholarly journals Sensitive detection of tamsulosin hydrochloride based on dual-emission ratiometric fluorescence probe consisting of amine-carbon quantum dots and rhodamine B

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Aida Mousavi ◽  
Rouholah Zare-Dorabei ◽  
Seyed Hossein Mosavi
Keyword(s):  
Quantum Dots ◽  
Rhodamine B ◽  
Fluorescence Probe ◽  
Limit Of Detection ◽  
Biological Fluids ◽  
Specific Interaction ◽  
Carbon Quantum Dots ◽  
Dual Emission ◽  
Selective Determination ◽  
The One

AbstractIn this work, amine-carbon quantum dots (CQDs)/rhodamine B (RhB) ratiometric fluorescent (RF) sensor was employed for effective and selective determination of tamsulosin hydrochloride (TMS) based on a dual-emission fluorescence system. Although the function of amine-CQDs is to transfer the specific interaction between TMS and sensor into detectable fluorescence (FL) signals, RhB as a reference unit has been employed to omit internal and external effects. The FL signal was quenched by adding the TMS at 442 nm; nevertheless, it did not change at 569 nm. The material characterization and investigation of the sensing mechanism were done. The optimization of pH, the volumetric ratio of CQDs to RhB, and interaction time parameters were carried out by the one-variable-at-a-time (OVAT) method. The quantitative analysis of the concentration of TMS for this RF sensor in a linear range of 0.446–7.083 μg mL−1 (1.091–17.338 μM) was obtained (R2 = 0.9969, n = 3) under optimum conditions. The limit of detection and quantitation values were estimated to be 0.033 μg mL−1 (0.081 μM) and 0.109 μg mL−1 (0.267 μM), respectively. The repeatability of intra-day and inter-day were less than one percent. This inexpensive RF probe was well applied to determine TMS in biological fluids, and acceptable achievements were obtained.

scholarly journals Sensitive Ratiometric Probing of Tamsulosin Hydrochloride Based On Dual-Emission Fluorescent In Biological Fluids Utilizing Amine-Carbon Quantum Dots And Rhodamine B

2021 ◽  
Author(s):  
Aida Mousavi ◽  
Rouholah Zare-Dorabei ◽  
Seyed Hossein Mosavi
Keyword(s):  
Quantum Dots ◽  
Rhodamine B ◽  
Limit Of Detection ◽  
Biological Fluids ◽  
Specific Interaction ◽  
Carbon Quantum Dots ◽  
Dual Emission ◽  
Selective Determination ◽  
Ft Ir ◽  
The One

Abstract In this work, amine-carbon quantum dots (CQDs)/rhodamine B (RhB) ratiometric fluorescent (RF) sensor was employed for effective and selective determination of tamsulosin hydrochloride (TMS) based on a dual-emission fluorescence system. Although the function of amine-CQDs is to transfer the specific interaction between TMS and sensor into detectable fluorescence (FL) signals, RhB as a reference unit has been employed to omit internal and external effects. The FL signal was quenched by adding the TMS at 442nm; nevertheless, it did not change at 569nm. The material characterization and investigation of the sensing mechanism were done by UV-Vis, fluorimetry, EDS, TEM, FT-IR, and zeta potential analyses. The optimization of pH, the volumetric ratio of CQDs to RhB, and interaction time parameters were carried out by the one-variable-at-a-time (OVAT) method. The quantitative analysis of the concentration of TMS for this RF sensor in a linear range of 0.446-7.083 μg mL-1 was obtained (R2=0.9969, n=3) under optimum conditions. The limit of detection and quantitation values were estimated to be 0.033 μg mL-1 and 0.109 μg mL-1, respectively. Repeatability of intra-day and inter-day were less than one percent. This inexpensive RF probe was well applied to determine TMS in biological fluids, and acceptable achievements were obtained.

Sign in / Sign up

Export Citation Format

Share Document