Talk:Gas chromatography

message: wat happens when the column length is increased -- (msg from December 2004) — Preceding unsigned comment added by 62.252.64.14 (talk) 03:10, 8 December 2004‎ (UTC)
:Advantages to increasing column length include better separation of peaks that overlap slightly.  Disadvantages are peak spreading and longer retention times. --206.194.127.112 (talk) 20:14, 16 May 2008 (UTC)
thread_title:  Column length 

message: It would be excellent if someone came up with drawings for this article.  After all, "a picture is worth a thousands of words."
Allentchang 00:14, 15 Dec 2004 (UTC)
thread_title:  need drawings 

message: The history section is in desperate need of an overhaul. Fuzzform 19:24, 06 Dec 2005 (UTC)
thread_title:  History section 

message: The Chromatography article has all of two sentences about GC.  And they aren't even entirely correct.  Anyone want to volunteer to go edit/expand that? Pi3832 15:38, 22 May 2006 (UTC)
thread_title:  Chromatography Article 

message: I have seen the sensitivity of chromatographs expressed in fg/s. Can someone explain what this measure is please. Lumos3 22:29, 22 May 2006 (UTC)
replies: text: Femtograms per second.  See the metric system article. Pi3832 16:19, 23 May 2006 (UTC)
thread_title:  fg/s 

message: I've added a section on Methods, in which to discuss some general information on method developement.  If it gets too detailed we may want to make a separate article(s), but I think this is a good place too start.  Please, please, please feel free to compose stuff for this section--the subsections, especially.--Pi3832 14:33, 7 June 2006 (UTC)
thread_title:  Methods 

message: Heya all, I have reordered the article a bit a few days ago, to make it be more organized. Various great sections had sprouted recently and it became a collection of subsections without much order (I am not innocent), that I thought distracted from the big picture. Let me know if there are any such changes you disapprove of. Also, volunteers are sought for the sections Data Reduction and analysis (software, integrators, retention indices, databases, mass fragmentograms, etc) and Column selection (phases, dimensions) - I wouldnt mind collaborating. Carboxen 00:57, 22 October 2006 (UTC)
thread_title:  recent revision of article 

message: Not including external links for vendors on this page is fairly clearly covered in the WP:External links guideline.  Links to be avoided #4: "Links to sites that primarily exist to sell products or services."
Links to help sites, I feel, fall under the Important points to remember part of the WP:External links guideline.  Specifically:
#Links should be kept to a minimum.
#Rather than creating a long list of external links, editors should consider linking to a related category in the Open Directory Project (also known as DMOZ) that is devoted to creating relevant directories of links pertaining to various topics. (See .) If there is no relevant category, you can request help finding or creating a category by placing  on the article's talk page.
DMOZ already has a category for Gas Chromatography, and I have put a link to it in the article.
If there is some external link that can be included within the WP:External links guideline, and explanation on this page would help to keep it from being removed from the article.  Thanks. --Pi3832 18:24, 12 March 2007 (UTC)
thread_title:  External Links 

message: Hi -- this article bears the marks of TMCGS (Too Many Chemistry Grad Students).  It's highly technical and detailed in its topic coverage, but the introduction doesn't even explain in a simple way *what GC is used for*.  Perhaps this could be worked on? -- YACGS (yet another chemistry grad student) —The preceding unsigned comment was added by 66.240.10.170 (talk) 03:32, 16 April 2007 (UTC)
thread_title:  Too much detail, not enough info in intro for laymen 

message: Sometimes "HPGC" is used.  Should it be mentioned in the article, or redirected?
— DIV (128.250.204.118 06:53, 11 July 2007 (UTC)
thread_title:  HPGC 

message: We really don't need a section that does nothing more than list the makers of gas-liquid chromatography equipment and gas-liquid chromatography accessories.  It is not encyclopedic, and it is a magnet for spam.  --Jaysweet 21:33, 13 July 2007 (UTC)
replies: text: I see people re-spamming the hell out of this article without justifying on the talk page why those external links are encyclopedic.  They are not.  I am blanking it again until someone please justifies themselves on the talk page.  --Jaysweet 14:30, 19 July 2007 (UTC)
replies: text: Whoopsies, it appears I've been a little heavy-handed...  Most of those links were internal wiki-links and therefore do not qualify as spam.  I restored the sections and the internal links.  The external links have been removed, though, and I will continue to aggressively remove them.  Repeated adding of spam could result in warnings and blocks.  --Jaysweet 14:59, 19 July 2007 (UTC)
thread_title:  Deleted section on propane and propane accessories 

message: I want the picture present in 9th cbse NCERT book.
Can you please help me??  —Preceding unsigned comment added by 125.62.100.167 (talk) 04:52, 12 October 2007 (UTC)
thread_title:  Separation of components of air 

message: This section sounds very opinionated.  — Preceding unsigned comment added by 35.9.128.119 (talk) 21:36, 18 February 2014 (UTC)
replies: text: I am currently working on this article and as no one has given an argument as to why this section should stay, nor added any citations to the existing section, I will be removing it from the article. It gives the reader no benefit to understanding gas chromatography itself and the information does not come from reliable sources and does seem to be biased. Amassey1 (talk) 12:34, 18 March 2021 (UTC)
thread_title:  GCs in popular culture 

message: I think the information here is quite reliable but no source material is stated.
Could the author/authors maybe look them up and write them?
Would mean a lot since I need to qoute this for an important project.  —Preceding unsigned comment added by 83.183.74.61 (talk) 12:53, 18 January 2009 (UTC)
thread_title:  Sources? 

message: * http://scholar.google.com.hk/scholar?as_q=flash+gas+chromatography&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdts=5&hl=en
--222.67.205.143 (talk) 05:24, 31 March 2010 (UTC)
thread_title:  Technique of FGC 

message: As I understand it, fractional distillation can be configured in a plant as a continuous process, whereas, at least as I have always seen it implemented, gas chromatography, because of its analytic task, is alwasy a batch process.  This is an important distinction, as well, which I feel should be mentioned.  —Preceding unsigned comment added by 50.46.82.18 (talk) 14:48, 6 April 2011 (UTC)
replies: text: It sure is a pretty fine line between an analytical technique and a separation process. Industrial "chromatography" often does involve continuous process however. "All you have to do" is keep track of each bit of injected material and watch the eluent at known times (or distances) from the injection. I haven't seen promotional material for large-scale Simulated moving bed gas chromatography equipment, but there are primary-literature studies of the idea. DMacks (talk) 15:11, 6 April 2011 (UTC)
thread_title:  Main section 

message: I have changed this sentence ... FROM
"The atomic emission spectra is diffracted by a diffraction gradient and detected by a series of photomultiplier tubes." TO ...
"The atomic emission spectra is diffracted by a diffraction grating and detected by a series of photomultiplier tubes or photo diodes." To correct an error and to include a more recent technology.
SUPERHETRODYNE (talk) 20:16, 6 March 2015 (UTC)
replies: text: Thanks. Materialscientist (talk) 22:36, 6 March 2015 (UTC)
thread_title:  ERROR CORRECTION AND UPDATE 

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thread_title:  External links modified