Biological sample preparation by using restricted-access nanoparticles prepared from bovine serum albumin: application to liquid chromatographic determination of β-blockers

2019 ◽  
Vol 186 (9) ◽  
Author(s):  
Mariana Azevedo Rosa ◽  
Henrique Dipe De Faria ◽  
Diailison Teixeira Carvalho ◽  
Eduardo Costa Figueiredo
Keyword(s):  
Bovine Serum Albumin ◽  
Sample Preparation ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Biological Sample ◽  
Chromatographic Determination ◽  
Liquid Chromatographic Determination ◽  
Β Blockers ◽  
Liquid Chromatographic

Liquid Chromatographic Determination of Ivermectin in Bovine Serum

1989 ◽  
Vol 72 (1) ◽  
pp. 59-59 ◽  
Author(s):  
Delbert D Oehler ◽  
J Allen Miller
Keyword(s):  
Liquid Chromatography ◽  
Bovine Serum ◽  
Chromatographic Determination ◽  
Reverse Phase ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic ◽  
Sensitive Method

Abstract A rapid, sensitive method is described for the determination of ivermectin concentrations in bovine serum. Ivermectin is extracted by passing a sample through a reverse-phase C18 cartridge. A silicapacked cartridge is used to purify the extract further. Ivermectin is quantitated by liquid chromatography with detection at 245 nm. Recoveries were 95 ± 4% for samples fortified with 20 ppb ivermectin. Concentrations as low as 2 ppb can be detected in 5 g samples.

scholarly journals Analysis of melatonin and serotonin from cherries: a review

2018 ◽  
Vol 22 (1) ◽  
pp. 52-60
Author(s):  
Varga-Visi Éva ◽  
Ildikó Jócsák ◽  
Katalin Lóki ◽  
György Végvári
Keyword(s):  
Sample Preparation ◽  
Electrochemical Detection ◽  
Sweet Cherry ◽  
Sour Cherry ◽  
Chromatographic Determination ◽  
Fluorometric Detection ◽  
Liquid Chromatographic Determination ◽  
Special Respect ◽  
Liquid Chromatographic

The proper quantification of serotonin and melatonin in different foods is indispensable to evaluate the significance of their dietary intake on blood and plasma levels in humans. This review summarizes the issues regarding the measurements of these compounds from sour cherry and sweet cherry. Sample preparation and analytical methods are discussed, mainly focusing on the liquid chromatographic determination of these compounds, with special respect to their parallel determination in one run. Keywords: indoleamine derivatives, LC-MS, electrochemical detection, fluorometric detection

Improvements and Modification of the Gas-Liquid Chromatographic Determination of Vitamin D2 in Multiple Vitamin Tablets and Raw Materials

1973 ◽  
Vol 56 (6) ◽  
pp. 1374-1377
Author(s):  
David O Edlund ◽  
Florido A Filippini
Keyword(s):  
Sample Preparation ◽  
Raw Materials ◽  
Chromatographic Determination ◽  
Vitamin D2 ◽  
Column Packing ◽  
Chromatographic Procedure ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract A gas-liquid chromatographic procedure used to determine vitamin D2 in multiple vitamin tablets and raw materials has been improved by the use of a Dexsil 300 GC column packing. Sample preparation procedures have been modified. The improved procedure has been statistically evaluated and found to be both accurate and precise.

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