EPA Method 5035

We have a Tekmar 3100 Sample Concentrator and a SOLAtek 72 multi-matrix autosampler for performing purge and trap volatile organics analysis (VOA). In addition to traditional purge and trap sample extraction by EPA 5030, this system complies with the requirements for EPA 5035, closed-system purge and trap, designed to minimize the loss of volatile organic compounds during analysis.

The traditional EPA 5030 calls for weighing aliquots of soil or solids prior to purge and trap. During this operation the majority of very volatile compounds like trichloroethylene can be lost. EPA 5035 uses sealed sample vials, sealed after sampling and never opened prior to analysis. All operations are done by

penetrating a septum of the vial keeping the sample sealed and preserving the volatile organic compounds. The range for EPA 5035 is 0.5 to 200 ug/kg.

What Happens If ...

... the sample contains more than 200 ug/kg? Well, you only have one chance on an individual sample. To protect the purge and trap system from contamination by high level samples, samples should first be screened. A portion of the sample is screened for volatile organics by either headspace analysis or methanol extraction. So you need at least duplicate samples, and triplicate samples would be advisable.

For a quotation...

Tekmar 3100

This system is used to purge volatile organic chemicals from liquid and solid samples, capture the volatile organics on a porous polymer trap, and back flush the volatiles onto a GC or GCMS system for analysis. Advantages of this new system are:

inert Silcosteel sample path
moisture control
Trap Pressure Control
reduced carryover
rapid heating and cooling
Windows control software

For more information .....

SOLAtek 72 Autosampler

This unit is used to automate sample introduction into the Tekmar 3100 in compliance with EPA 5030 and 5035. Avantages include:

automated QC samples
automated calibration standards
auto dilutions
inert Silcosteel
built-in heater and magnetic stirrer for soil samples
72 samples
networked control and status

For more information ...

	9240 Santa Fe Springs Rd Santa Fe Springs, CA 90670
info400@exova.com	562.948.2225 Fax 562.948.5850