Will Sodium laureth sulfate be oxidized and detected in TOC analysis?

More Jesper Knutsson's questions See All

Usesful database for corporate governance data such as Board Size, Board Independency, CEO Duality etc.?

I'm looking for a database with data on several corporate governance structures such as; Board Size, Board Independency, CEO Duality, Board Gender Diversity, etc. Is there a database around that...

05 April 2023 1,765 3 View

What is this bone?

This little piece of bone has been found in the Hasle Formation of Bornholm, Denmark The formation is lower Jurassic (Pliensbachian) of age and contains a rich chondrichthyan fauna, fish, and...

06 March 2023 4,336 2 View

How to use dummy variables for days of the week?

Hello, I have a dataset in SPSS which contains stock index returns on a daily basis. Now I need to create dummy variables for the days Monday, Tuesday, Wednesday and Thursday. I need to link...

28 April 2021 5,076 4 View

How do I use dummy variables for non-weekend holidays?

I need to do an OLS regression on a dataset with stock index returns. To control for the Monday- and Holiday effect I need to add dummy variables. An other study that did the same regression...

06 April 2021 1,390 41 View

Has properties for metal vapours even been measured?

Hi, I am currently working on simulating laser welding stainless steel 304, where focus of the simulation is upon having a proper shielding of the weld using argon (using ANSYS Fluent). The...

19 April 2020 693 0 View

What is this fossil?

I have found two specimens of this mysterious fossil in our museum collection. I expect it to be a tracefossil of some sort. they are both found in the Uppermost Maastrichtian chalk of Stevns...

19 August 2019 9,518 18 View

Water quality standard for hygiene use?

Just wanted to throw this question out there, if anyone know about any country, municipality or other entity that has adopted water quality standard for hygiene use (in contrast to potable water,...

07 February 2019 9,421 12 View

It seems the world is out of P81 cation exchange chromatography paper. Please contact GE Healtcare to make them start production again?

If you're doing kinase activity assays the old fashion way with radioactive labelled ATP and peptide substrate you might use P81 cation exchange chromatography paper to capture the peptide....

31 May 2018 3,790 2 View

Does anybody know of any new promising cryoprotectants?

I was wondering if there are any novel cryoprotectants, both permeating and non-permeating. Also, as far as i know all commercially available freeze media contain permeating CPAs like DMSO or...

27 February 2018 9,218 0 View

Standard fold enrichment cut-off/threshold in functional enrichment analysis?

I am analyzing a set of DE miRNAs for functional enrichment. I have carried out miRNA target prediction using different algorithms and experimental databases. However, when testing for enrichment...

14 April 2017 4,582 2 View

How to learn more about SPSS and its Application?

I would like to learn more about SPSS and Its application especially in regards to data analysis. Please suggest me how I can learn more about it. Thank you so much.

11 August 2024 9,101 4 View

Can I base on reverse DNA sequences to perform alignment, convert to amino acids and GenBank submission?

I have reverse sequences (AB1 format), can I base on reverse DNA sequences to perform nucleotide alignment, convert nucleotides to amino acids and deposit the sequence in GenBank database?

11 August 2024 5,138 1 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

Text-Communication from the M1 Hand Area using BCI—and then there is Elon Musk?

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10 August 2024 7,180 0 View

Has anyone applied Python in the field of textile engineering for data analysis, automation, or smart textiles?

I'm currently exploring the application of Python in textile engineering, specifically in areas like data analysis, process automation, and the development of smart textiles. I'm interested in...

10 August 2024 7,429 2 View

How can I use the cif data obtained from rietveld refinement extracted via gsas2, for microstructural analysis using ETEX software?

09 August 2024 7,718 0 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

How to prepare the nanoparticle treated fungal sample for Environmental SEM analysis?

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07 August 2024 5,307 1 View

How to normalize and take the significance of the MTT OD values with 3 replicates for the same cell-line?

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07 August 2024 8,106 4 View

Why does my protein refolded to beta sheet during thermal denaturation analysis?

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06 August 2024 1,989 3 View

Peter Philbrook

I would guess that it would contribute to signal, an easy way to find out however would be to prepare a SLES standard, and run it. Make it up in a clean TOC free water solution. Here is a link that states TOC analysis is used to make sure detergents are not present. http://technotes.alconox.com/detergents/tergazyme/what-is-toc/

Jesper Knutsson

That seem to be a good route. I just wanted to know if the idea was futile, but there seem to be a possibility that it will work.

Thanks for the note, Peter Philbrook !