Fluorescence detector
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A high-performance liquid chromatography-fluorescence detection (HPLC-FLD) method for determination of the fluoroquinolones norfloxacin (NOR), ciprofloxacin (CIP), levofloxacin (LEVO), and moxifloxacin (MOXI) in human plasma has been successfully developed. The detection was optimized with a dual wavelength excitation and emission fluorescence detector.
5p vicedric 08-02-2023 3 1 Download
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In this study, structural, thermal, and hydrogen (H2 ) adsorption properties of natural analcime-rich zeolite tuff (A) from Trakya (Turkey) and that of acid-treated forms investigated. Analcime mineral was treated with 0.1, 0.5, 1, 2, and 3 M HCl solutions at 80 °C for 5 h.
12p lyhuyenthu 31-01-2023 8 2 Download
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Fluorescence Nuclear Track Detectors (FNTDs) are part of a new technology developed for particle detection and applicable to personal neutron dosimetry. The objective of this study is to simulate the FNTD fast neutron response to: (i) assess and understand the performance of the existing neutron dosimeter design (Landauer Inc.) and its associated single layer track-spots analysis; and (ii) evaluate the potential information that can be obtained by the analysis of the 3D reconstructed recoil proton trajectories.
13p vironald 15-12-2022 8 3 Download
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Lithium fluoride fluorescent nuclear track detectors (FNTD) irradiated with alpha-particles were subjected to annealing at temperatures ranging up to 400 ◦C. It was found that for the annealing temperatures between 200 ◦C and 300 ◦C the intensity of fluorescent tracks increases.
7p vironald 15-12-2022 9 3 Download
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The purpose of this work is to develop a tool to search for a gradient profile with ternary or binary mixtures in liquid chromatography, that can provide well-resolved chromatograms in the shortest time for multianalyte analysis.
13p vironald 15-12-2022 7 2 Download
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The gross α and β activity concentrations in the thermal waters of Karakaya-Aya¸s, ˙I¸cmece-Aya¸s, Beypazarı (Dutluk-Tahtalı), Haymana, and Kızılcahamam spas in Ankara Province were measured by MPC-9604 multi-detector α/β counting system. Ranges of activity concentrations found were from 0.09 to 2.58 Bq L−1 for gross α and from 0.25 to 2.61 Bq L−1 for gross β. The ranges of minimum detectable concentrations for gross α (0.05–0.41 Bq L−1 ) and for gross β (0.04–0.29 Bq L−1 ) were obtained.
7p langthannam 29-12-2021 7 0 Download
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A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. The analysis was performed in an octadecyl silane column using a solvent system [ACN:water:formic acid (50:50:1.25, v/v/v)] by isocratic elution. The flow rate and injection volume were 1 mL min−1 and 12 µL, respectively.
10p langthannam 29-12-2021 6 0 Download
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The aminated-silica nanoparticles with a positive zeta potential interact with GFP having a negative zeta potential via ionic force. GFP immobilized by the aminated silica nanoparticles greatly enhances (ca. 2 times) the bioluminescence intensity compared to free GFP. The lipase/aminated-silica nanoparticles catalyzed the transesterification reaction of 1-hexanol and ethyl acetate.
7p spiritedaway36 28-11-2021 6 0 Download
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Turkey is the leading country in the world in terms of boron production and sale. Increasing boron production goes along with an increasing generation of boron wastes. The pollution of the soil and the air around the waste piles, as well as the occupation of several square kilometers of ground, are major environmental problems. It is, therefore, very important to make use of the wastes to both protect the environment and create revenue.
10p tudichquannguyet 29-11-2021 5 1 Download
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The trap was then heated to release volatile compounds including ethylmethylmercury into a GC-AFS for separation and detection. The instrumental detection limit was 4.8 pg Hg/L. The method can therefore be applied for the determination of methylmercury in water samples at ultra – trace.
8p elandorr 03-12-2019 20 0 Download
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LIF (laser-induced fluorescence) is a very popular CE detector – These have ~0.01 attomole sensitivity for fluorescent molecules (e.g. derivatized proteins). Direct absorbance (UV-Vis) can be used for organics. For inorganics, indirect absorbance methods are used instead, where a absorptive buffer (e.g. chromate) is displaced by analyte ions – Detection limits are in the 50-500 ppb range. Alternative methods involving potentiometric and conductometric detection are also used – Potentiometric detection: a broad-spectrum ISE – Conductometric detection: like IC...
21p qdung92ct 03-07-2012 63 6 Download