Better LODs with Hot Injection and Trapping

Martin Perkins

9th October 2014

CIS4, Cryo Trap, Dynamic Headspace, GERSTEL KK, HIT, Hot Injection, LODs, Pittcon, Ray Perkins, Semi-Volatile, SPME, Static Headspace, Trapping, Volatile,

Hot Injection and Trapping (HIT) using the GERSTEL TDU and CIS 4 Injector

Analysts that carry-out work on volatile (and some semi-volatile) compounds by GC-MS, know that different headspace sampling techniques give different peak profiles for the same sample. As a result, you need access to a selection of different sampling techniques to be able to choose the one that most suits analytical problems that you are facing right now.

Whatever technique you end up using, the ability to gain more sensitivity when you need it is something of great value.

One way of doing this is by using a technique called HIT or Hot Injection and Trapping.

HIT enables us to inject multiple aliquots of headspace – however we take the sample (SPME, Static Headspace, Dynamic Headspace) and combine these individual aliquots into one, using the GERSTEL CIS 4 as a cryo trap.

This work was originally presented in a poster at PITTCON by our friends from GERSTEL KK in Tokyo. They have now have written an interesting article based upon this work, that explains HIT and gives some examples of what it can do.

Please click here to read the article.

We have a HIT-GC-MS system set-up in our laboratory, so if you would like to know more about how it can be applied to your work, please call us on +44 (0)1223 279210 or email