OPTIMIZATION OF NEUROTRANSMITTERS SEPARATION UNDER HILIC CONDITIONS
Journal Title: Journal of Engineering Studies and Research - Year 2017, Vol 23, Issue 1
Abstract
This paper presents the optimization of a hydrophilic interaction chromatographic method for the separation of eleven catecholamines, indolamines and their precursors and metabolites. The studied parameters are: the organic modifier nature and percentage, the salt nature and concentration, the mobile phase pH and the column temperature. The best results in terms of separation were obtained using a mobile phase composed of acetonitrile and ammonium formate (150 mM pH 3) 85:15 v:v.
ANOVA OPTIMIZATION OF DRILL BIT TEMPERATURE IN DRILLING OF PURE AND CARBON BLACK REINFORCED HIGH DENSITY POLYETHYLENE
High density polyethylene materials have many application areas in automotive, aviation, electrical and electronic etc. industries. In some applications, their mechanical properties need to be improved. For this reason,...
A PROJECT MANAGEMENT UTILITY FOR AGRICULTURAL FACILITIES AND PUBLIC HEALTH
This research study analyses the project management of agricultural facilities that protect agricultural food and public health from associated toxic hazardous landfill emissions and risks. Project management is presente...
THE PRODUCTIVITY OF SOME MONOECIOUS HEMP VARIETIES (FOR FIBER AND MIXTE) UNDER THE CENTER OF MOLDAVIA ECOPEDOCLIMATIC CONDITIONS
The present paper presents the results obtained regarding the evolution of stem and fiber production in monoecious hemp, under the pedoclimatic conditions of the Center of Moldova, between 2012 and 2016. The biological m...
NEW MX2 AND M’Cl3 (M = Cu, Zn; M’= Y, Dy, Pr; X = Cl, Br) MALEATO COMPLEXES AND TETRAPHENYLANTIMONY FORMIATE ADDUCT: SYNTHESIS AND INFRARED STUDY
Eleven complexes and adduct have been synthesized and studied by infrared. The suggested structures are discrete with tetrahedral, trigonal bipyramidal, square planar or octahedral environments around Zn, Ni, Hg and Cu c...
NEW TRANS-1,2- CYCLOHEXYLDIAMINO-NN,N’N’ (CH2CO2)(CH2CO2H)3 ANION CONTAINING ADDUCTS AND DERIVATIVES: SYNTHESIS AND INFRARED STUDY
Five Cyclohexyldiamino-NN, N’N’(CH2CO2)(CH2CO2H)3 anion containing adducts and derivatives with tin, antimony and mercury halides have been synthesized and characterized by infrared spectroscopy. The suggested structures...