Analytical Chemistry

Analytical chemistry is the study of the separation, identification, and quantification of the chemical components of natural and artificial... | Contact experts in Analytical Chemistry to get answers

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Questions related to Analytical Chemistry

Hi, where can I find the PMMA CIF file?

I need a basic CIF file of PMMA with their different crystalographic coordinates in the aim to modyfing it in Gaussian :)

26 May 2023 2,956 1 View

What is the wavelength of Glycerol monostearate maximum absorption in spectrophotometric analysis?

in order to quantify the concentration of Glycerol monostearate in aqueous solution by UV spectrophotometer, what is the maximum lambda of Glycerol monostearate?

14 May 2023 4,267 3 View

No signal of isododecane in GC/MS?

Colleagues I'm trying to determine a concentration of isododecane in one of the products. I prepared a standard solution of isododecane in dichloromethane. The concentration was high, about 1% wt....

09 May 2023 9,361 4 View

In which inorganic solvent does polypyrrole dissolve?

Organic solvents destroy the Ag/AgCl chloride electrode.

25 April 2023 677 5 View

Adhesion Promoter for Ebeam Resist ZEP520A on Si wafer other than HMDS?

We don't have HMDS vapor priming, unfortunately. Is there any other Ebeam resist adhesion promoter that can be used by spin-coating onto the substrate?

13 April 2023 8,555 1 View

While doing UV spectroscopy of copper oxide nanoparticle i have found this graph. Can anyone explain the reason behind this?

copper oxide nanoparticles were dissolved in distilled water at 1:1 ratio.

05 April 2023 750 8 View

What kind of grids are used for TEM test of graphene oxide?

12 March 2023 6,290 3 View

Why do UPF files ignored?

My input file is too long so I'm attaching the file. I'm having problems 1. 2 of my atom UPF files are ignored. 2. Atomic positions below 5th line are all ignored. Can you help me with this? This...

03 March 2023 2,691 0 View

Fast publication journals for Image processing?

Need to publish research paper in impact factor journal having higher acceptance rate and faster review time.

24 February 2023 914 2 View

What are all the Filler Foams used in thin walled sandwich structures?

As per the article Filler Foams used in thin walled sandwich structures to absorb the impact energy. Commonly Polyurethane foam is used as a filler in sandwich structures. Please give me an idea...

18 January 2023 9,266 0 View

Activity of Bare nickel foam ? is high right ?

Bare nickel foam giving the good activity about 280 mV at 10mA current density . How people mentioning lower activity of Bare nickel foam ? After the acid Wash also .

03 January 2023 8,039 0 View

Wildfires and algal bloom: fact, fiction, perceived, negligible, or serious risk?

Often-observed post-wildfire increase in nutrients—phosphorus in particular—commonly leads to increased biological activity in streams, starting with algal growth. Although phytoplankton and...

20 December 2022 4,753 5 View

Is there any correlation between MFI and Brookfield viscosity for linear polymers?

Is there any correlation between MFI and viscosity, measured i.e. with Brookfield viscosimeter? In particular for linear polymers.

19 December 2022 1,749 2 View

Do you guys have an experience about nanoscale etching for fabrication of 100nm scale aluminum hole array?

I'm going to make an aluminum hole array with a 100nm scale. The thickness of aluminum is 150nm and I'm trying to dry-etch aluminum with a thickness of 150nm using ZEP520A mask which is a positive...

18 December 2022 9,923 1 View

How to simulate loading plate (from steel) in software PLAXIS 2D ?

hello;i need your help in simulate plate in PLAXIS 2d software.diameter is 100mm and made in steel E=200 GPa.Whate are values of bending stiffness (EI) and axial stiffness (EA)?

28 November 2022 519 0 View

How to determine the theoretical plates in a distillation column?

For example in the laboratory I want to determine my distillation column theoretical plate number (for Example 50 cm height and 3 cm diameter column with packed raschig ring). I read the...

19 November 2022 8,883 1 View

Can someone help me to calculate invitro % of drug release in Caco-2 cell?

I. Prepare a 2mL of a solution of drug formulation and free drug using 0.7% tween 20 with PBS. II. As per above mention intervals, withdraw a 200 µL sample of exterior dissolution solution for...

17 October 2022 5,805 0 View

Health impacts of GMO agricultural products on human health?

Can someone recommend to me research papers/literature review on impacts of GMO food on Human health around the world? The objective is to harness empirical data on the effects of GMO products...

08 October 2022 6,175 1 View

While running gaussian i have this query End of G2Drv Frequency-dependent properties file 721 does not exist. Does Gaussian still proceed?

My system has 106 molecules the basis set used was B3LYP/6-311G(d) OPT FREQ=RAMAN %mem=1GB %nprocshared=1 %chk=pro2mole.chK

03 October 2022 2,186 0 View

How can I detect a non-electroactive compound like eucalyptol by cyclic voltammetry?

I have essential oil of eucalyptus and I want detect by cyclic voltammetry and major compound on eucalyptus is eucalyptol but eucalyptol is not electro active.

20 July 2022 5,502 0 View

How should i combine the data of dissolution test of each vessel ?

suppose i have performed dissolution test of paracetamol tablet with six tablet in six vessels. I get data for each tablet . How shall i combine the data and use it for further analyis ?

12 July 2022 1,501 6 View

What's the real meaning of dw/dlogM data from RI detector of GPC, and how can we relate it to RI intensity data ?

Hi everyone, I'm trying to understand the role and the meaning of the dw/dlogM raw data obtained from GPC, and how to relate it to the RI intensity raw data. does anyone have any insight about it...

13 March 2022 2,951 0 View

Can the vertical shift factor disturb the determination of the activation energy calculated form the horizontal shift factor?

The use of horizontal shift factors fo determining the activation energy of a relaxation process (e.g. creep or stress relaxation) is well known from the literature. Usually, if possible, only...

14 December 2021 2,978 4 View

Sample dilution is skewing my results, and dilution factor isn't fixing it?

I've created a calibration curve for a phospholipid sample analysis that works very well. Except when I take samples from my batch reactor, which are slightly more dilute than a "neat" sample...

04 November 2021 4,341 13 View

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