Satadru Chakrabarty

13 Questions 5 Answers 0 Followers

Questions related from Satadru Chakrabarty

Different Raman spectra of graphene like quantum dots?

The characteristic raman spectra that I've obtained for graphene like quantum dots shows a kink at about 1450 cm-1, this is different from the reported literature. What can be the posible reason...

02 February 2020 3,055 3 View

How can I index XRD peaks of a graphite like sample?

I've a nano-scaled graphite like material, the XRD pattern is showing some peaks which are not matching with any of the reported literature. For example usually a broad peak is seen around 21...

02 February 2020 6,399 2 View

What can be the perfect GC-MS operating conditions for acetonitrile?

I have to analyse the change in composition of acetonitrile after being reacted mechanically at different time intervals, hence I'm planning to undertake a GC-MS of the samples. Can anyone suggest...

06 June 2019 9,291 8 View

What is a Solid State Metathetic Reaction?

What kind of synthesis is this SSM route useful for?

04 April 2018 10,172 2 View

Can retention time for a particular compound change when detected at various wavelengths?

I'm using a PDA detector HPLC unit, I was wondering whether it is possible that the retention time can change for a particular compound when the detector is set at a different wavelength, all...

12 December 2017 5,550 6 View

What can be the plausible reason for increase in the area of a peak in HPLC spectrum, even when the reaction is to degrade the compound?

I'm withdrawing samples after a 15 minute interval for 90 minutes. Hence, the 90th minute sample is to show the highest amount of degradation or the least peak area, but it shows the highest, this...

11 November 2017 6,002 7 View

What is the JCPDS card number for potassium ferrioxalate trihydrate crystals?

How to identify crystalline phase data from the XRD data of the said crystals

09 September 2017 508 2 View

Which is the better analytical software Modde Pro or Design expert? Why?

statistical analysis, software, data analysis designing experiments

08 August 2017 5,823 4 View

Why is the lambda max of dibenzothiophene chosen as 275-284nm and not 230-240nm?

In most research papers the wavelength chosen for DBT detection is 284nm, but according to the NIST data the maximum absorbance occurs around 230-240nm. Can anyone explain why it is...

08 August 2017 4,176 4 View

What could be the HPLC conditions for thianaphthene/benzothiophene?

How do I choose the best conditions for this sort of HPLC?

08 August 2017 8,352 4 View

Will dextran coated iron oxide nano particles react adversely in an acidic medium?

Nanoparticles Iron oxide Acid HCl coating

06 June 2017 7,463 4 View

Can an alkaline buffer be used to deprotonate a weakly acidic compound?

Acids & Bases Buffers Deprotonation

05 May 2017 8,729 1 View

In some electro chemistry related papers in a plot of potential vs current density the potential is given as negative, what does it mean?

carbon dioxide electrolysis

05 May 2017 3,358 7 View