Irum Asif

5 Questions 9 Answers 0 Followers

Questions related from Irum Asif

What are the possible reasons for appearance of shoulder peak and slight shift in peak in HPLC for the catalytic reduction study of p-nitrophenols?

During catalytic reduction study of p-nitrophenol by newly synthesized hybrids, the characteristic sharp peak of PNP (in reference) is split into two peaks after reduction. Is it an indication of...

27 December 2022 3,729 6 View

Is it possible to study the fragmentation pattern of polymer based hybrids by using GC-MS?

TGA is used to study the thermal degradation of the polymer based inorganic hybrids, confirming the presence of metal oxides as residual mass. Is it possible to analyze these materials by GCMS to...

20 September 2021 8,742 3 View

Is there any method to analyze low concentration solutions on HPLC, by standard addition method?

I have studied the removal of azo dyes by the polymer based hybrids, using UV Visible spectroscopy. I want to analyze the same samples (1 ppm) on HPLC. But the concentration must be high (10 - 50...

13 April 2021 6,716 5 View

For the purification of Acrylic Acid (Stabilized with hydroquinone monomethyl ether), what are other methods used than vaccuum distillation?

I have searched for many methods, and it seems a common practice to remove the stabilizer from monomer before further use in polymerization in common polymer labs. Kindly suggest some other...

14 October 2020 8,019 4 View

How can we determine the nature of ionic liquid (2-Ethyl-1-methylimidazolium methyl sulfate) by using simple titration method?

What is the method to determine the nature (acidic / basic) of ionic liquids (2-Ethyl-1-methylimidazolium methyl sulfate) by using simple classical method of titration? It is required to study...

23 January 2020 3,724 2 View