Does anyone have an idea of how to calculate the molar absorption of a solvent by UV-vis-Spectroscopy?

More Muhammad Wasim Akhtar's questions See All

How can I functionalize graphene with Di amine?

I want to functionalize graphene with di ammine.

09 October 2015 7,160 2 View

What are the necessary considerations, during functionalization of Graphene?

What is the optimum temperature, Why refluxing is important?

08 September 2015 6,813 3 View

How can I find the proper concentration of graphene during synthesis by liquid-phase exfoliation?

I am working on the liquid-phase exfoliation of graphite for synthesis of graphene. I am unable to calculate the proper concentration of graphene in the dispersion. When I tried with vacuum...

09 October 2014 3,802 3 View

How can I clean silicon wafer substrate for an AFM sample?

I want to characterize my Graphene on Atomic force Microscopy (AFM), therefore I request you to kindly guide me the sample preparation steps for AFM and cleaning of silicon wafer as a substrate...

08 September 2014 10,035 11 View

What is dipolar aprotic solvents? Does anbody have list of dipolar aprotic solvents

What are Dipolar Aprotic Solvents? Does anybody knows about their properties and have list for dipolar aprotic solvents.

08 September 2014 9,182 2 View

Could you please tell me how to find absorption in the below UV-VIs Spectroscopy?

i am unable to find this simple thing.

08 September 2014 4,109 19 View

How do you find the molar absorptivity of the mixture of solvent to find the concentration of graphite that is dispersed as graphene in the solvent?

I exfoliate graphite by liquid phase exfoliation method. after synthesis the Dispersion is in liquid form. I normally use filtration method to find the concentration but I read some authors find...

08 September 2014 695 3 View

Activation Energy Calculation from Flynn Wall Ozawa Method?

How to calculate the lnβ, from a TGA curve, for calculating the activation energy Ea.

01 January 1970 6,675 4 View

How can i find the area of three different segments of a curve using Origin or any software?

Here i am attaching the picture you reference. S1,S2 and S3 are the three different segments of the curve. i want to calculate the specific area of these segments by using some software like...

01 January 1970 6,447 2 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

What is the solvent for 8YSZ nano material?

I need to do some experiment with it in liquid form.

07 August 2024 613 3 View

Absorption coefficient of methane?

Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?

06 August 2024 980 5 View

How can I add own Henry coefficients in Aspen Plus?

Hi, i would like to simulate an absorption process in Aspen Plus. I want to use the NRTL model und would like to add some individual Henry coefficients. Is that possible and how?

05 August 2024 2,333 2 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

Which solvent is better to dissolve with secondary metabolites extracted from fungi?

I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...

03 August 2024 4,725 2 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View

How to calculate the molar proportions of the oxides from the XRF analyses?

02 August 2024 2,565 2 View

I need to dissolve stigmasterol for an animal experiment, it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent?

Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?

01 August 2024 7,504 2 View