Questions tagged [extraction]
For questions regarding the separation process consisting in the separation of a substance from a matrix. This tag can be used for generic extraction of elements from ore or more specific types of extraction such as: liquid-liquid extraction, and solid phase extraction.
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Which xylenes, if any, are immiscible with DMSO?
"Xylene" is reported to be immiscible with dimethyl sulfoxide (DMSO), according to a few solvent miscibility tables found online (chart 1, chart 2, chart 3). I have tried to locate some ...
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Where is my antimony going?
I work in a trace metals laboratory operating an ICP-OES. I've been having some trouble with the recovery of antimony in a weak $\ce{HCl}$ solution post-digestion.
The antimony is part of a mix of ...
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TsOH and 5% NaHCO3 Interaction: Unexpected Dark Green Color
Here's the brief:
I synthesized alkyl gallates (ethyl gallate, butyl gallate, and amyl gallate) using Fischer esterification.
I used TsOH instead of concentrated H2SO4 as the catalyst.
After ...
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Why does emulsions hinder the full extraction of a substance?
I've learend that in processing liquid-liquid extractions, emulsions can appear between two immiscible solvents.
For exmaple, to extract caffeine from green tea leaves;
The caffeine in water can be ...
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In solvent extraction from plant cells, what is the static organic solvent film formed?
I am researching the mechanisms behind solvent extraction of oil from microalgal cells, and it is stated in one paper that in the process of transferring the lipid out of the cell, the solvent-lipid ...
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Why would methanol and water be used for an aqueous layer in a separating funnel compared to just water?
I have a protocol for separating an inorganic component from an organic mixture, which asks for the mixture to be suspended in methanol and water and then doing an extraction with hexane. I understand ...
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Reduction of gingerol content in ginger using kitchen equipment
The single topic that this question focuses on is - how to remove gingerol and only gingerol from a piece of ginger in a manner that it remains safe to eat using equipment found in a well stocked ...
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What chemical mechanisms or parameters altered during the usage of buffered extractant for leachability of a soil or sediment?
Toxicity characteristic leaching procedure (TCLP) is an extraction method to simulate a soil or sediment leaching. The method employed two extraction fluids - one is a buffered
solution of acetic acid ...
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Can I extract solid sugar from any fruit juice at home?
The goal here is to isolate the sugar from all other compounds in the juice. In this case, I'm using apple juice and grape juice. The sugar does not need to be edible, as it is being used to make r-...
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Purification of Red Phosphorus
The Boring Stuff
I'm well acquainted with various fields of science & engineering, but my foray into the world of chemistry is relatively recent.
I'm in a location (probably most of us are to some ...
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Why does 'softening' of lead oxidise only elements other than lead?
In a flowchart describing the steps to refine lead obtained after the reduction step, my book1 gives a short note on the process 'Softening of lead' where the crude lead is melted in the presence of ...
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Increasing concentration of acetylcholine via SPE
I am trying to increase the final yield of acetylcholine (ACh) in my biofluid samples. I need to get the yield high enough for high confidence annotation of ACh (currently all I can really say is that ...
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The effect of lactose monohydrate on acid-base extraction of tolterodine tartrate
I am doing an organic chemistry project for school in the form of an acid-base extraction of tolterodine tartrate (Detrol) in ammonium hydroxide (or sodium hydroxide, haven't decided yet) and ...
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Will lead bind to dissolved polymer (Kapton) monomers?
We are attempting to determine the concentration of lead impurities in Kapton. Essentially we need to extract lead in the tape polymer Kapton (structure seen below);
The amount of lead in the tape is ...
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How to without calculations understand the liquid-liquid extraction efficiency?
I'm asking myself this question for a very long time and I haven't found a simple an good explanation yet for the fact that it's better (if you want to clean them) to wash your hands two times with ...
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