Rapid determination of 90Sr in urine samples using AnaLig® Sr-01

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


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

2012 ◽  
Vol 151 (1) ◽  
pp. 30-35 ◽  
Author(s):  
X. Dai ◽  
S. Kramer-Tremblay ◽  
C. Li

2019 ◽  
Vol 120 (01) ◽  
pp. 132-140 ◽  
Author(s):  
Job Harenberg ◽  
Jan Beyer-Westendorf ◽  
Mark Crowther ◽  
Jonathan Douxfils ◽  
Ismail Elalamy ◽  
...  

AbstractThe rapid determination of the presence of direct oral anticoagulants (DOACs) in a patient remains a major challenge in emergency medicine and for rapid medical treatment decisions. All DOACs are excreted into urine. A sensitive and specific point-of-care test has been developed to determine whether they are present in patient urine samples. This prospective multicenter study aimed to demonstrate at least 95% correct positive and negative predictive results for factor Xa and thrombin inhibitors in urine samples using DOAC Dipstick pads compared with liquid chromatography-tandem mass spectrometry (LC-MS/MS) (NCT03182829). Nine hundred and fourteen subjects were included and 880 were evaluated per protocol (factor Xa inhibitors apixaban, edoxaban, and rivaroxaban: n = 451, thrombin inhibitor dabigatran: n = 429) at 18 centers. The sensitivity, specificity, accuracy, and predictive values and agreement between methods for determination of factor Xa inhibitors were at least noninferior to 95% with a 0.5% margin and of thrombin inhibitor superior to 97.5%. These results were compared with LC-MS/MS results in the intention-to-analyze cohort (all p < 0.05). The receiver operating curve showed c-values of 0.989 (factor Xa inhibitors) and 0.995 (thrombin inhibitor). Visual evaluation of the factor Xa and thrombin inhibitor pads was not different between centers. Qualitative determination of both types of DOACs was accurate using the DOAC Dipstick compared with using LC-MS/MS. The high predictive values may impact laboratory and clinical decision-making processes.


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