Can we calculate the concentration of TOC (Total organic carbon) in seawater from COD value?

More Cao Thi Thu Trang's questions See All

Senescence-associated beta galactosidase staining is False Positive in control group?

Hi guys If anyone is currently working on aging cells, you guys would like to give me some advice. I'm testing against biomarker (SA-beta-Gal), I encountered a false positive in the control group...

02 August 2024 6,735 1 View

How to Differentiate Tuffaceous Matrix from Clay Matrix in Sandstone Thin Sections?

I am conducting a study on sandstone samples and need to accurately differentiate between tuffaceous matrix and clay matrix when examining thin sections under a polarized light microscope. While...

20 June 2024 3,270 0 View

How does ABAQUS call the 'fil:no' variable using the subroutine GETVRM?

I am trying to get the dissipated energy densities of PENERD, CENERD, VENERD and DMENERD for each incremental step using the GETVRM subroutine. Part of my code is as follows: call...

13 June 2024 4,100 0 View

How to define viscoelasticity in ABAQUS?

I am trying to define the viscoelastic parameters of a rubber material using abaqus, but I don't quite understand how to proceed. I now have stress-strain curves at different temperatures, and...

13 June 2024 3,150 2 View

What does integration point volume mean in abaqus? How to call it in abaqus subroutine?

what does what does integration point volume mean in abaqus? How to call it in abaqus subroutine? Does integration point volume refer to 'Evol'?

10 June 2024 9,197 6 View

How to use the BLAST primer to check the possible bonds of primer?

Hi everyone, I run PCR to checked presence of specific gene in Clostridium perfringens but I received 2 bands, one band showed product size expected and another one showed higher product size. I...

31 May 2024 645 1 View

What is the difference between "channel modeling" and "channel estimation"?

What is the difference between "channel modeling" and "channel estimation"? The difference can be summarized in many aspects, e.g., objective of tasks. So, the comparison among channel modeling,...

06 April 2024 1,117 5 View

How do teachers/ lecturers around the globe use AI tools and ChatGPT in EFL classes & in EFL writing classes?

A Literature Review of How ChatGPT is Perceived and Utilized in EFL Writing Classes: Implications for Vietnam

16 February 2024 5,894 3 View

Is there an indicator that can represent the sum of two variables is large but the difference is small?

as the question

18 January 2024 1,681 2 View

Interaction Between a Dummy Variable and a Continuous Variable?

Hello I am newbie to Stata and Statistic. I have run the interaction term only in my stata ologit Bribe i.Rela#c.Anti $cov To the best of my knowledge, there has to be a reference group (ex Rela1)...

15 January 2024 5,411 0 View

What is the reason for current dropping in OER , LSV curve?

I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...

10 August 2024 3,629 1 View

Adhesion strength of coating?

How can I determine a good adhesion strength range for coatings on polymer surfaces, such as DLC on polymer substrates? Is there a specific threshold for adhesion strength (from T-peel tests)...

10 August 2024 942 3 View

Do interactions between biosphere, carbon cycle, & water cycle impact global warming & interaction between atmosphere & hydrosphere?

How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?

09 August 2024 3,291 2 View

Who of all of you will help TPEOM to re-originate the Earths atmosphere to it original 5 atmospheric elements/gases?

Global ‘Weather’ has stopped, as ‘aqua thermionic instituted by the ‘Global thermo atmospherics has instituted global thermodynamics of 120º C + and thus all waters are, or have boiled into a...

06 August 2024 8,716 0 View

How do living organisms play a role in the water cycle and why is nonpoint source pollution potentially more harmful than point source pollution?

01 August 2024 7,061 2 View

Does anyone have issues using Prepman Ultra reagent for MicroSeq ID bacterial, fungal and yeast sample preparation?

I have been attempting to extract DNA from Bacterial, Fungal and Yeast banked samples (>1e7 cells) using Prepman Ultra reagent and I seem to be struggling to obtain a sequence. Although the...

01 August 2024 2,079 0 View

How can I separate graphene from amorphous carbon of similar particle sizes?

The starting material is a finely ground powder. Some particles contain more graphene than others.

30 July 2024 3,978 2 View

Question about combustion Kinetics ?

I am currently working on modeling FCC catalyst regeneration and have come across a point of uncertainty that I hope you can assist me with. In my previous models, I have utilized lumped kinetics...

30 July 2024 6,137 0 View

What are the perfect mathematical model for a solar-powered ship implementation?

A computational study of heat flux on cylindrical surfaces using CNT hybrid nanofluids

28 July 2024 4,985 1 View

Why semicircle of nyquist plot is not complete?

While I am doing HER, I noticed that nyquist plots of Electrochemical Impedance Spectroscopy (EIS) is not complete. Will it affect for the Linear Sweep Voltametry (LSV) data? However, I can found...

26 July 2024 7,542 4 View

Georgios Samiotis

You may find empirical formulas depending the sample you have to measure (seawater, wastewater etc), but it is not safe to do so.

What kind of sample do you have?

Cao Thi Thu Trang

Our sample is seawater, so do you have any relationship between COD and TOC in seawater? Thanks

I found this diagram that may help you for now: http://umitosora.org/umisora_pdf/vol50_4_1.pdf

It is late for me, have to sleep.

Contact me if you want help searching

Thanks Georgio Samiotis for your information.

Abrar Ahmad

Any body can provide the formula to calculate original total organic carbon (TOC) from present day TOC.