نتایج جستجو برای: chemiluminescence properties

تعداد نتایج: 874400  

Journal: :Journal of bioluminescence and chemiluminescence 1997
A Navas Díaz J A González García J Lovillo

The chemiluminescence of the luminol-H2O2-horseradish peroxidase system is increased by fluorescein. Fluorescein produces an enhancement of the luminol chemiluminescence similar to that of phenolphthalein, by an energy transfer process from luminol to fluorescein. The maximum intensity and the total chemiluminescence emission (between 380 and 580 nm) of luminol with fluorescein was more than th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1981
J P Hamman H H Seliger G H Posner

The metabolism of 7,8-dihydroxy-7,8-dihydrobenzo[a]pyrene results primarily in the ultimate carcinogenic metabolite of benzo[a]pyrene, 7,8-dihydroxy-9,10-oxy-7,8,9,10-tetrahydrobenzo[a]pyrene and to a lesser extent 7,8-dihydroxy-9,10-dioxetane-7,8,9,10-tetrahydrobenzo[a]pyrene, from which chemiluminescence is observed. This specific microsomal chemiluminescence has been used to establish that t...

Journal: :Analysis & sensing 2021

Chemiluminescence (CL) is a very promising method for applications in analytic chemistry and biological systems due to the elimination of external light source, which could reduce autofluorescence interference improve signal-to-noise ratio (SNR) tissue penetration depth. The fluorescent dyes, chemiluminescent initiator, reaction temperature are three crucial factors that determine chemiluminesc...

Journal: :Nanoscale 2013
Gabriela Marzari Gustavo M Morales M Sergio Moreno D I Garcia-Gutierrez Fernando Fungo

The particular properties of carbon nanoparticles (CNPs) have generated great interest in biomedicine, bioanalysis and optoelectronics. However, an association between the CNPs' physicochemical properties with their molecular and morphological characteristics is, even today, a topic of discussion. In this work, we use a simple method of synthesis with the ultimate aim of elucidating the structu...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2003
Kazuhiko Tsukagoshi Masayuki Tahira Riichiro Nakajima

We developed an FIA system equipped with a chemiluminescence detector using a mixed chemiluminescence reagent of luminol and 1,10-phenanthroline for the detection of metal ions and metal complexes. The carrier, mixed chemiluminescence reagent comprising luminol, 1,10-phenanthroline, and cethyltrimethylammonium bromide, and H2O2 solutions were fed by corresponding pumps at a definite flow rate. ...

Journal: :Japanese journal of pharmacology 1993
I Ohoi K Sone H Tobari E Kawano K Nakamura

We have developed a simple and reproducible method employing chemiluminescence to measure oxygen-derived free radicals generated in oxygenated myocardium. Isolated perfused rat hearts were frozen in liquid nitrogen during the control perfusion (non-ischemia), after 30 min of global ischemia (ischemia), or after 20 min of reperfusion following 30-min global ischemia (reperfusion). The frozen hea...

Journal: :Fertility and sterility 2009
Reda Mahfouz Rakesh Sharma Jakob Lackner Nabil Aziz Ashok Agarwal

OBJECTIVE To examine simultaneously the levels of hydrogen peroxide (H(2)O(2)) and superoxide (O(2)(-*)) using chemiluminescence and flow cytometry. DESIGN Prospective laboratory study. SETTING Reproductive research lab in a tertiary hospital. PATIENT(S) Semen samples from 18 healthy male volunteers. INTERVENTION(S) Sperm preparation and measurement of reactive oxygen species (ROS) by c...

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