Chromatography Applications and Advantages

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Discussion Overview

The discussion focuses on the applications and advantages or disadvantages of gas chromatography (GC) and high-pressure liquid chromatography (HPLC), particularly in the context of the pharmaceutical industry. Participants explore the roles of these techniques in analysis versus separation, as well as their perceived value in various applications.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions the use of chromatography in separation, suggesting that GC and HPLC are primarily analytical tools rather than separation methods.
  • Another participant argues that chromatography is indeed used for separation, pointing out that other forms of chromatography are commonly employed for bulk separation.
  • A later reply emphasizes that preparative chromatography is a method that produces significant results in separation, challenging the notion that these techniques are solely analytical.
  • Concerns are raised about the economic feasibility of chromatographic separations in the current regulatory environment, citing high costs and time consumption as potential drawbacks.
  • There is mention of the pharmaceutical industry's preference for methods that prioritize yield over chromatography, indicating a contentious view on the utility of these techniques in that sector.

Areas of Agreement / Disagreement

Participants express differing views on the role of chromatography in separation versus analysis, with no consensus reached on its advantages or disadvantages in the pharmaceutical industry.

Contextual Notes

Some claims about the economic aspects of chromatography and its applications may depend on specific contexts or definitions that are not fully explored in the discussion.

sanjuro
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What are the applications and advantages/disdvantages of using gas
and high pressure chromatography? Why does the pharmaceutial industry
use chromatography?

Any info would be much appreciated

Thanx
 
Last edited by a moderator:
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Term paper, huh? Look for "review" articles --- Chemical Review is an obvious first place, then it's off to Chem. Abstracts, or Physics Abstracts.
 
GC and HPLC are great analytical tools. But can't be used for separation. The pharmaceutical industry hates chromatography with a passion and would much rather take a hit with yield than not running a separation.
 
Originally posted by Chemicalsuperfreak
GC and HPLC are great analytical tools. But can't be used for separation. The pharmaceutical industry hates chromatography with a passion and would much rather take a hit with yield than not running a separation.

I don't quite understand, why you even say that they can not be used for separation. They are not meant for seperating, only for analyzing.

Nautica
 
Originally posted by nautica
I don't quite understand, why you even say that they can not be used for separation. They are not meant for seperating, only for analyzing.

Nautica

Other forms of chromatography are commonly used for bulk separation. They all separate of course...
 
"Preparative chromatography" produces 2k hits, GC, LC, and HPLC --- analysis rather than separation? Huh? That's the analytical principle --- the separation of components from each other.

Iowa State (?) used to run a commercial separation of lanthanides; this day and age, EPA and OSHA would probably bankrupt you with disposal fees before you could fail gracefully as a consequence of an insufficient market for chromatographic separations --- it's expensive, it's a special case (cost is no object) method, and it's entirely too time consuming for accounting depts/divs.

2k hits? Obviously still around.

Edit: Google math is as peculiar as "new math," 2k = 575 by actual count.
 
Last edited:

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