Hello every buddy, can someone guide me how to calculate different metal fractions in Tessier extraction procedure with formula? thanks

answers with formula will be helpful for me to understand, thanks

04 May 2017 1,480 0 View

Hello every one, can anybody tell me about BCR extraction values for soil pb, what should be the order of control and obtained values in each step?

I got values in this order, 1st step: less than control 2nd, 3rd, and 4th step of BCR I got values greater than control.

03 April 2016 3,840 4 View

How can we understand the behavior of phosphorus, heavy metals and organic acids in soil ?

I want to study this, research papers will be high

10 November 2014 8,384 2 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How to resolve Gaussian error termination " Error termination via Lnk1e in F:\G16W\l103.exe" for TS(QST3)?

When I run the job for TS(QST3) in gaseous phase, it was completed without any error. But when I add water in CPCM model it terminated with an error: Inconsistency: ModMin= 2 Eigenvalue=...

21 February 2021 3,198 2 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View

Using the Pfaffl method: Is it possible that the ratio of the calibrator does not equal 1?

Hi all, I have a question regarding calculations using the Pfaffl method. I have 3 groups per experiment: 1 control group (calibrator) and 2 treatment groups with 6 to 7 biological repeats per...

19 February 2021 8,351 2 View

How to get better phase shift in C-V curves for ferroelectric devices?

I tried to sweep my ferroelectric devices from -2V to 2V and then from 2V to -2V and The two hysteresis peaks are off by several microFarads. Should i increase bias voltage? I am doing these...

16 February 2021 8,514 2 View

Want to ask about equivalence ratio?

09 February 2021 5,273 2 View

What could be the possible reason for the drastic variation in Qmax value for same adsorbent onto two different cationic dyes itself?

The adsorption capacity of the rice husk biochar was varying drastically with two cationic dyes namely Basic Blue 41 and Basic Red 09? What could be the possible reason behind this?

30 January 2021 1,420 3 View

How to calculate radial distribution function (RDF) of a complex from Ab initio MD simulation trajectory?

Hi all, Is there any software or webserver to read the molecular dynamics (MD) simulation trajectory which obtained from Ab initio MD simulation to calculate the atom-atom radial distribution...

25 January 2021 9,474 3 View

Solving diffusion- reversible chemical reaction equation: How to solve both terms numerically?

I am using finite difference method to discretize the parabolic equation (explicit method), but confused about the chemical reaction term. Solving the generic equation for i specie involves a...

24 January 2021 1,149 18 View

Doubt in DFT geometry preparation?

Hi all, I am trying to perform some ab inito DFT calculations using cp2k code. I have a unit cell of 120 atoms and would like to know how to refine or reduce the number of atoms in the unit cell...

20 January 2021 6,024 3 View