In GC Why does retention time decrease when temperature increases? Also how does a change in temperature effect selectivity?
1 3123Post New Analytical Chemistry Questions
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?
How can I develope method of dissolution by HPLC OR UV
What is the purpose of octyl silane columns?
in each media we require to use SLS? how to proceed?
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
for which product require to do content uniformity? what is limit of cu?
what are the guidelines for analytical method validations?
How to choose the which salt is suitable for mobilephase
how require to select dissolution media? what is discrimination?
WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?
Explain the relations between number of carbon atoms in alkanes and retention time ?
how to decide for one product require water content or LOD?
Why we check moisture,ash & AIA in product
Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .