What is this peak between 2300cm-1 and 2400cm-1 on FTIR data for LDPE and HDPE?

More Emily Reynolds's questions See All

Absorption coefficient of methane?

Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?

06 August 2024 980 5 View

How are Large Models Exploring and Outputting Knowledge Understanding in Specific Content Areas, and What Does Academic Research Say About It?

Hello everyone！ I am currently exploring the performance of large models in understanding knowledge in specific domains, and attempting to construct a knowledge framework similar to what...

05 August 2024 5,729 2 View

Regarding a model for simulating battery charge and discharge, what do you consider to be high fidelity?

Regarding a model for simulating battery charge and discharge, what do you consider to be high fidelity? What is the acceptable percentage of error (regardless of the metric)? Could you suggest...

03 August 2024 5,358 0 View

How do i get an account to upload my published papers?

need to open an account to upload my published papers

01 August 2024 9,255 1 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 589 4 View

How to correctly use the UTE and ZTE pulse sequences in Bruker's ParaVision software?

I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...

01 August 2024 9,227 1 View

Is artifacts in XPS possible to build high deviation in binding energy larger than 5 eV??

Hello. Thanks for your consideration to see my question. Recently, I conducted XPS anaylsis of g-CN that is prepared from thermal polycondensation of DCDA, so-called conventional bulk-g-CN,...

30 July 2024 9,824 2 View

Which statistical test should we use?

N=6 Comparing pre and post test likert scale responses. Participants are mix of practicing & preservice teachers.

30 July 2024 7,233 4 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

Can the limit of quantification (LOQ) of an analytical method fall outside its linear dynamic range, or must it always be within it?

Can an analytical method's limit of quantification (LOQ) be outside its linear dynamic range, or is it always required to be within it? Please provide a thorough explanation supported by verified...

29 July 2024 7,198 9 View

In passive sampling, can polymer-lipid partition coefficients be applied independent of environmental salinity?

For example, if low-density polyethylene (LDPE) is equilibrated with PCB contaminated marine and freshwater sediments, can LDPE-lipid partition coefficients be used to obtain equilibrium...

28 July 2024 263 1 View

Can you recommend provider Intermediate laboratory test for hydrocarbon, polyethylene & polypropylene?

Accredited laboratory of JV "Uz-Kor Gas Chemical" LLC (Uzbekistan) is looking for providers to conduct interlaboratory comparison tests on gas chromatographic analysis of hydrocarbons (component...

25 July 2024 8,108 0 View

VOC analysis on GCMS ?

Hi everyone, Can someone explain for me a method to inject VOC collected with Tedlar bag from pyrolysis process and transfer or inject into GCMS. Thanks

22 July 2024 6,398 1 View

What are the engineering applications of polyethylene with waste tire rubber?

When polyethylene, whether high-density or low-density, is mixed with percentages of waste tire rubber, it becomes a new material. Where can it be used?

26 June 2024 3,349 2 View

Best way to calculate temperature between a sheet of plastic and and absorber as a function of solar radiation intensity (watts/meter^2)?

I am studying polyethylene heat absorbing systems. For example, modeling heat exchanges in a solar air heater and temperatures for melting polyethylene.

01 June 2024 9,379 7 View

Problem while making hydrogel from chitosan and gelatin ?

A uniform mixture of chitosan and gelatin is made by dissolving in acetic acid, after that the mixture is transferred to a plastic petri plate kept at -20 C for 24h and then lyophilized. But i am...

29 May 2024 7,367 4 View

How to get the price of Polyethylene, polyvinyl alcohol and polypropylene fibers used in concrete in different countries?

12mm length

16 May 2024 9,341 0 View

What are the standard methods of washing laboratory containers such as glass and polyethylene using dilute acid in the soil laboratory?

I need standard laboratory methods for washing glass and polyethylene containers in the soil laboratory With the best wishes Sajad Bayat

13 May 2024 5,244 0 View

Establishing an equivalent circuit of the NASICON doped sodium polymer electrolyte?

I am working on composite polymer electrolytes. I have prepared one. It includes sodium perchlorate as a sodium source, polyethylene oxide (Mw: 10^6), and NASICON for enforcing elastic moduli. I...

02 May 2024 875 1 View

Any recommended fat body removal methods for fresh dissections of insect nervous systems?

Hi all, I am a graduate student at ISU working on the nervous/neuroendocrine system of various insects. While still succeful on my slide mounts, I am struggling with the best way to remove fat...

10 April 2024 8,607 0 View

Mina Karimi-Avargani

Dear Emily,

according the attached results, in comparison to the FTIR of blank sample, the amount of absorption in the range of 2300-2400 is not significant, but as Mrs. Soleimani has mentioned the peak of CO2 appears in the range of 2300-2400.

I have attached one text which display CO2 peak. I hope it would be useful.

David Scheuing

The new peak is CO2. Note the variation in the small sharp bands due to water vapor as well. Your spectrometer purge quality is a bit wobbly.

Emily Reynolds

Thank you everyone, very helpful responses!