Sensitivity, reproducibly, separability

[iris]

I am writing seminar on GC-MS and GC-ECD for secondary school project. And I would like to know, what influences on sensitivity, reproducibly and separability (eg pressure, column, bad septa, liner...). I can't find these information on the internet. Thank you for your answers.

[sassman]

If you can't find what you need on the net, maybe you need to make a trip to the university library.

[chemikas]

http://www.restek.com/advantage/adv_1996_04_koni.asp
http://matematicas.udea.edu.co/~carlopez/index4.html
http://www.gchelp.tk/
http://ull.chemistry.uakron.edu/analytical/GC/
http://en.wikipedia.org/wiki/Gas_chromatography
http://www.chromspec.com/literature/e%20literature.html

Keep trying