How to prepare phosphate buffer?

I want to prepare 0.05 M phosphate buffer of pH 7 from Na2HPO4 and KH2PO4. How to proceed?

10 November 2018 6,555 0 View

Analysis of hypericin by HPLC in food matrix?

Hello! Friends I need to analyze naturally occurring toxic substances Hypericin in Food matrix. Can somebody suggest a suitable HPLC or other method for that? Your inputs will highly be...

09 October 2018 358 0 View

Unknown concentration calculation using HPLC?

A typical formula often used for the concentration of an unknown sample concentration as follows: Conc in ppm= (standard area/ sample area)* stnadard conc.* Dilution factor Can anybody derive...

06 July 2018 9,580 6 View

Why octahedral site of spinel ferrite is more active for any catalytic reaction than that of tetrahedral site?

02 March 2016 6,550 1 View

Is it possible to separate peptides and amino acids by using HPLC equipped with a UV-visible detector?

I want to separate glycine and its oilogomer with hplc having uv-vis detector at wavelength of 195 nm but i failed to do that. Can anyone suggest some suitable method to do that?

31 December 2015 2,837 4 View

Is it possible to separate peptides and amino acids by using HPLC equipped with a UV-visible detector?

Is it possible to separate peptides and amino acids by using HPLC equipped with a UV-visible detector?

04 May 2014 8,753 1 View

Can anyone tell me the zero point charge value (pzpc) of molybdenum oxides?

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11 December 2013 8,961 1 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

How can Gamma Ray API units be converted to CPS (counts per second)?

Oil and gas companies run gamma ray tool and take readings in API units while Gamma ray is also noted in cps, so how these units can be converted into each other?

24 February 2021 7,545 2 View

How to remove compound ( Europium complex ) from paraffin oil?

How can I remove my compound from paraffin oil? Mistakenly my compound fell in an oil. Compound = Europium complex

22 February 2021 5,667 2 View

When I mix oil and NaOH solution, Why solid layer in the surface is formed?

During my trial for lubricant oil re-refinery process, I use NaOH as coagulant agent. After overnight of gravity settling, a solid layer in the surface was form. what product is that? since the...

22 February 2021 2,116 4 View

The type of filter paper used to filter an epoxidized oil (the mixture is an epoxidized oil with magnesium sulfate) ?

I have a mixture of epoxidized oil and magnesium sulfate wich type of filtre paper should i use

21 February 2021 3,944 3 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How can we study the adsorption efficiency of microgel at the oil-water interface?

I am studing the mircogel at oil-water interface. I want to know the adsorb amount of microgel at the oil water interface. How we can determine this amount?. I will highly appreciate your...

19 February 2021 2,787 1 View

Does anyone know, can i do cryosectioning of whole aorta after oil red O staining and use the cryosection parts for further analysis?

I would like to quantify the lesions on aorta. I want to take image of atherosclerotic plaques formation in aorta by using O red Oil Solution. After the staining, what will be the storage...

16 February 2021 5,876 2 View

Can any one explain why the ethyl ester Biodiesel (FAEE) has higher than that of the metyl ester FAME- both of them are derived from the same oil?

Biodiesels derived from waste vegetable oil transesterification with Ethanol (FAEE) show higher peroxide values than those derived by transesterification with methanol (FAME) prepared under the...

13 February 2021 193 6 View