Rapid Determination of Catecholamines in Urine Samples by Nonaqueous Microchip Electrophoresis with LIF Detection

Author(s):  
Hongmei Hu ◽  
Yuanming Guo ◽  
Tiejun Li
2013 ◽  
Vol 36 (20) ◽  
pp. 3419-3425 ◽  
Author(s):  
Hongmei Hu ◽  
Zhenhua Li ◽  
Xiaoning Zhang ◽  
Chunxiu Xu ◽  
Yuanming Guo

2013 ◽  
Vol 298 (1) ◽  
pp. 439-442
Author(s):  
Silvia Dulanská ◽  
Boris Remenec ◽  
Ján Bilohuščin ◽  
Miroslav Labaška ◽  
Bianka Horváthová ◽  
...  

2017 ◽  
Vol 9 (39) ◽  
pp. 5784-5790 ◽  
Author(s):  
Rosa María González Paredes ◽  
Carmelo García Pinto ◽  
José Luis Pérez Pavón ◽  
Bernardo Moreno Cordero

The development of rapid analytical strategies plays a vital role for the research, discovery and confirmation of analytes that can be sensitive biomarkers.


2019 ◽  
Vol 53 (4) ◽  
Author(s):  
Padmarajaiah Nagaraja ◽  
Naef Ghllab Saeed Al-Tayar ◽  
Anantharaman Shivakumar ◽  
Ashwinee Kumar Shresta ◽  
Avinash K. Gowda

A very simple, sensitive and fairly selective direct spectrophotometric method is presented for the rapid determination of thallium(III) at trace level. The method is based on the oxidation of 2-hydrazono-3-methyl-2,3-dihydrobenzo[d]thiazole hydrochloride (MBTH) by thallium(III) in phosphoric acid medium to form a diazoniumcation, which couples immediately with 10,11-dihydro-5Hdibenzo[b,f]azepine (IDB) at room temperature giving a blue colored species having a maximum absorption at 660 nm. The reaction conditions and other important analytical parameters were optimized.The calibration curve was found to be linear over the range of 0.1-4 μg/mL with molar absorptivity of 4.5 × 104 L mol- cm-1 and Sandell’s sensitivity of 0.00454 μg cm-2. The relative standard deviation and limit of detection have been found to be 0.58% and 0.0147 μg/mL respectively. Almost all common anions and cations are found notto interfering in matrix level of the analytical process. The method has been successfully applied for the determination of thallium(III) in synthetic standard mixtures, water and human urine samples. The performance of proposed method was evaluated in terms of student’s t-test and variance ratio F-test, to find out the significance of proposed method over the reported methods.    


2009 ◽  
Vol 30 (11) ◽  
pp. 1983-1990 ◽  
Author(s):  
Xiaocong Gong ◽  
Qingling Li ◽  
Kehua Xu ◽  
Xin Liu ◽  
Hongmin Li ◽  
...  

2012 ◽  
Vol 295 (3) ◽  
pp. 2189-2192 ◽  
Author(s):  
Silvia Dulanská ◽  
Boris Remenec ◽  
Ján Bilohuštin ◽  
Miroslav Labaška ◽  
Dušan Galanda

2014 ◽  
Vol 217 (8) ◽  
pp. 845-853 ◽  
Author(s):  
Rebecca K. Moos ◽  
Jürgen Angerer ◽  
Jürgen Wittsiepe ◽  
Michael Wilhelm ◽  
Thomas Brüning ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document