scholarly journals pH assists simultaneous determination of folic acid and vitamin D3 in biological fluids using a novel Tb3+–acyclovir optical biosensor

RSC Advances ◽  
2021 ◽  
Vol 11 (34) ◽  
pp. 20865-20873
Author(s):  
Sarah Alharthi ◽  
M. S. Attia ◽  
M. N. Abou-Omar
Keyword(s):  
Folic Acid ◽  
Simultaneous Determination ◽  
Vitamin D3 ◽  
Biological Fluids ◽  
Cost Effective ◽  
Optical Biosensor ◽  
Biological Compounds ◽  
Photo Probe

An innovative, simple and cost effective Tb3+–acyclovir photo probe was designed and used as a core for a spectrofluorometric approach to sensitively determine two vital biological compounds in different matrices.

scholarly journals New Tb3+–simvastatin optical biosensor for sensitive determination of folic acid, progesterone, testosterone and vitamin D3 in biological fluids

RSC Advances ◽  
2021 ◽  
Vol 11 (52) ◽  
pp. 32861-32872
Author(s):  
Mohamed S. Attia ◽  
Amal M. Ahmed ◽  
Tarek A. Amin ◽  
Ahmed. O. Youssef ◽  
Mohammed A. Amin ◽  
...  
Keyword(s):  
Folic Acid ◽  
Vitamin D3 ◽  
Biological Fluids ◽  
Cost Effective ◽  
Optical Biosensor ◽  
Biological Compounds ◽  
Sensitive Determination ◽  
Photo Probe

An innovative, simple and cost effective Tb3+–simvastatin photo probe was designed and used as a core for a spectrofluorometric approach to sensitively determine four vital biological compounds in different matrices.

scholarly journals Spectrodensitometric simultaneous determination of esomeprazole and domperidone in human plasma

2017 ◽  
Vol 15 (1) ◽  
pp. 293-298
Author(s):  
Pakinaz Y. Khashaba ◽  
Hassan Refat H. Ali ◽  
Mohamed M. El-Wekil
Keyword(s):  
Ethyl Acetate ◽  
Factorial Design ◽  
Simultaneous Determination ◽  
Human Plasma ◽  
Mobile Phase ◽  
Fractional Factorial Design ◽  
Cost Effective ◽  
Fractional Factorial ◽  
Tlc Plates

AbstractA simple, rapid, cost-effective, and sensitive TLC-spectrodensitometric method for simultaneous determination of esomeprazole and domperidone was developed and tested in human plasma. Ethyl acetate: methanol: benzene: acetonitrile (5: 4: 8: 3, v/v/v/v) mobile phase was used for separation on TLC plates detected at 286 nm. The linearity ranges were 5-1200 and 2-600 ng/ spot for esomeprazole and domperidone, and limits of detection were 1.73 and 0.59 ng/spot. The effects of four variables affecting Rf were evaluated by fractional factorial design. The benzene volume and saturation time had significant effects.

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