In Boehm titration, degasifying the acidified samples is an important step and there are various carbon dioxide expulsion methods. So will it be possible to remove carbon dioxide completely through vacuum degasifcation ?
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Activated carbon is prepared from lignocellulosic biomass using ZnCl2 as the activating agent. What is the possible reaction between zinc chloride and the biomass?
02 March 2018 9,517 4 View
For maintaing pH of heavy metal NaOH and HCl is added in a dropwise manner to the solution. But how can a buffer be used for maintaining the pH of the solution? Kindly give vivid explanation.
01 February 2018 8,307 4 View
Suppose I have prepared initial concentration of 10ppm(100 ml). After maintaining pH (2-6) by 1M NaOH and 1M HCl , it's original concentration decreases to a great extent, so what can be the...
31 December 2017 9,742 3 View
Suppose we are preparing 30 ppm sample and then maintain its pH by 1M NaCl or 1M HCl. I have seen that the concentration of the sample reduces a lot after maintaining pH. So, what is the purpose...
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Langmuir corresponds to monolayer adsorption whereas BET denotes multilayer adsorption. So, what is the reason behind Langmuir surface area to be greater?
06 July 2017 2,548 8 View
The curve yielded the features of Type 1 isotherm but the adsorption capacity continues to increase with an increase in relative pressure. So is my assumption correct regarding the type of...
05 June 2017 2,121 8 View
The Boehm titration of ZnCl2 activated carbon indicated basic sites of 0.525 mmol/g and 0.85 mmol/g phenolic groups with -0.19 mmol/g and -0.26 mmol/g lactonic and carboxylic groups. The total...
05 June 2017 4,938 1 View
The activated carbon was prepared by impregnating zinc chloride with the raw sample. I have carried out zero point charge by salt addition method and obtained a value of 7.03. Is it correct?
04 May 2017 8,370 6 View
I want to determine the zero point charge of activated carbon. So which is the best suitable method for it and is it neccessary to degasify the solution while measuring the final pH in order to...
03 April 2017 8,758 3 View
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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!
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After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...
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I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...
30 July 2024 6,420 1 View
Hello Everyone, While doing Boehm titration, We use nahco3 in order to determine carboxylic acids. Then the mixture was agitated. After a while, the solution was filtred and HCl was added. After a...
29 July 2024 4,048 4 View
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...
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I am doing research on wear mechanism of the additive manufactured metal parts under dry condition. Please share the reference to start the analytical modelling of the wear prediction.
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Some Staphylococcus aureus strains Inhibit the growth of Mycobacteria in Mueller Hinton Agar medium containing 10% OADC. Do some Staphylococcus aureus strains have in vitro antimycobacterial activity?
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Dear Siesta Users, I installed Siesta 5.0.1 and I want to use Grimme's D3 correction. According to the 5.0.1 manual, I could use a few parameters to include the D3 correction in the...
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