Measurement of volatile contamination in DEHP?

14 November 2022 0 5K Report

Does anyone know an analytical method (besides GC-MS-Headspace or GC-IMS) for the detection and identification of highly volatile and organic compounds which emerge from liquid plasticizers like DEHP?

Badges
Science topic

More Rick Raaijmakers's questions See All

Outdoor emergence-trap insect netting: what type to use and where to buy?

For a while I am searching on internet for types, material and especially: mesh-sizes of outdoor-proof insect netting for emergence/breeding-experiments. Its to breed a complete community from...

20 March 2024 7,223 1 View

Has there been a 40% decline in phytoplankton?

Nature 2010

01 March 2024 1,982 1 View

Does GR require dark matter to be present to hold a galaxy together? Would First Motion be an improvement?

The information I have is that GR requires dark matter to be present to explain how masses in a galaxy are held together. In First Motion, there is not such requirement because the collective...

18 February 2024 3,377 4 View

Can Einstein's GR be replaced by a mechanical model?

When Einstein published his relativity theories, he was not yet aware of what we now call the Big Bang. That means he did not capture in GR one of the motions we are involved in. I call that...

28 January 2024 8,978 0 View

Can RIPA or SDS lysisbuffer be used for plant cells?

Hi, I'm looking for a lysisbuffer that can make the proteins from oats available for a Bradford protein assay. RIPA and SDS are both compatible with the kit I'm planning to use (thermofisher) and...

21 September 2023 1,821 3 View

What are examples of protein dilution buffers for a bradford protein assay?

For one of my internship projects I need to measure the difference in protein content from 2 oat samples. I am planning to use a bradford protein assay for this and in the protocol it says to...

13 September 2023 4,040 1 View

Does Propylene-glycol influence manipulativity of specimen for museum collections?

Dear all, Propylene Glycol seems to be a promising alternative to ethanol or other more toxic trapping fluids for insects. But, I've experienced in a few trials that specimen become extremely...

17 February 2023 9,959 0 View

Why an increasing Mass Spectrometer sensitivity?

We are extracting PVC compounds using diethylether. We analyse this extract directly on our GC-MS system. After analyzing this extract on our GC-MS, we observe an increasing baseline of the...

10 March 2022 4,514 1 View

What causes this warning in Silvaco TCAD?

Thank you for answering my question, dear Sir/Madam: I tried to simulate an FTJ structure with ATLAS in Silvaco TCAD, and this warning occured: Warning: Internal error in linear solver. This...

01 March 2022 8,498 3 View

Can you fully extract erucamide from polyolefin by using simple solvent extraction?

Me and my colleagues are looking for a quantative GC-FID/MS method for the determination of erucamide in polyolefin foil. Most of the articles suggest pressurized solvent extraction. We are not...

26 October 2021 4,843 1 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 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

Basis set and input instruction to calculate HOMO and LUMO using Orca for Imidazolium based organic salts?

Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...

09 August 2024 5,444 7 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

How can major oxides determined by ICP-MS/ES be normalized to 100% volatile free? How does this connect with LOI?

I am analyzing cherts from different sources found within one specific geologic formation using ICP-MS/ES. My committee was asking this question about my analysis. I was not sure how to answer this

05 August 2024 7,902 3 View

If we are using snowball sampling technique, how do we justify the true representativeness of the sample statistically? is there any statistical test?

Are there any statistical methods to justify your sampling technique using SPSS or AMOS?

05 August 2024 9,153 4 View

What are possible strategies can be used to analyze data under sequential explanatory mixed method approach?

Better ways to analyze the qualitative and quantitative data in a sequential explanatory mixed method approaches

04 August 2024 2,703 6 View

How to convert g/kg Humic acid dose to kg/ha?

I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?

02 August 2024 7,186 6 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View