Can anyone help me with finding a good method to detect formaldehyde in a mixture of formaldehyde, methanol and hydrogen?

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FTIR of ZnSe nanoparticles?

FTIR spectrum of ZnSe nanoparticles shows that its transmission is not flat around 10 micrometer but in the presented spectrum by lens companies its transmission is smartly flat. What can be the...

04 February 2024 7,817 2 View

Methanol & combination of Methanol with Water?

Hello to all Does anyone have reliable information about the chemical properties of methanol and the combination of methanol with water? With valid reference We need this information to select the...

25 December 2023 8,901 4 View

My question is about the second level of concept analysis (concept development). Definitions and methods of its implementation?

The existing articles mainly used positivist logic and were at the first level of concept analysis (interpretation of the concept). Can someone explain the use of post-positivist logic in the...

29 April 2023 618 1 View

Should I consider the Carbon sequestration of less durable bio-based products?

Hello everyone, I have a question about the carbon sequestration from less durable bio-based products (e.g., animal bedding from wood chips or straw). My goal is to measure the carbon footprint of...

14 November 2021 2,445 13 View

How to calculate correction factor from two sets of numbers?

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Do I have to assume sphericity or not when conducting two way repeated measures ANOVA in graphpad prism 8?

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28 September 2020 6,835 4 View

What is the differences between texture intensity (pole figure) and intensity factor calculated by Lotger methode (Lotgering factor)?

hi to all I have a problem in calculating texture intensity to substitute in texture strengthening formula σ = m.τ which m represented the texture intensity. I have only XRD data. is it possible...

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I was wondering if there is a method for determining sufficient number of sampling sites for river water quality assessment?

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22 March 2020 9,481 9 View

Relationship between heavy metals and water quality parameters in rivers?

What are the reasons for a significant negative correlation among heavy metals such as Cadmium (Cd) and Lead (Pb) with fecal coliform, BOD, NO3, and PO4 during the wet period?

10 March 2020 6,692 12 View

How to perform microangiographic study of small intestinal anastomosis?

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08 October 2019 2,987 1 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

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Can you connect an HPLC to a Mass Spec only at a certain time point?

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GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

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Can I use a HisTRAP column for affinity chromatography?

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AUX gas reading problem on QE with full MS and PRM method in one run?

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06 August 2024 4,953 0 View

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 can I inoculate a lyophilized anaerobic bacteria into the culture medium without an anaerobic chamber?

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Why results of ROS flurescence are negative as there was no bacteria within?

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How to Transform my handy-wavy explanation of why group I/II metals oxides in aqueous solution are basic into a rigorous argument?

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Why is TLC not a form of partition chromatography?

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Steven A Zdravkovic

Enter your answer

Markus Christ

Hi Davoud, a common method for qualitative and quantitative detection of aldehydes is derivatization with 2,4-Dinitrophenylhydrazine and analysis by HPLC (e.g. https://www.agilent.com/cs/library/applications/5991-1545EN.pdf). Greetings Markus

Davoud Ghazanfari

Dear Chandan, what column do you suggest for doing so, also do you know how to calibrate it and how make standards?

Thanks