Ethylene Oxide Resources
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Detecting Ethylene Oxide (EtO) To 0.040 ppbv is now possible in ambient air
The EPA has identified ethylene oxide (EtO) as a potential carcinogen at low concentration. We’ve pioneered a way to neutralize trans-butene interference to make ultra-low detection of EtO possible and accurate down to 0.040 ppbv.
NEW EVACUATED CANISTER METHOD SOLUTION FROM SGS GALSON
LOW-PPBV METHOD
Our clients asked us to develop a procedure to analyze EtO samples using evacuated canisters at the extremely low levels required for ambient air analysis. In response, we validated the EtO analysis using 450 ml, 1-liter and 6-liter samplers. The analysis requires GCMS analysis by EPA TO-15 in SIM mode for ethylene oxide.
The limits of quantitation for the canisters are 0.040 parts per billion from evacuated 6L canisters or 0.20 ppbv LOQ from evacuated minicans. Sampling times range from 15 minutes to seven days, depending on the canister used. The 450ml canisters can also be used for personal sampling.
| SGS Galson EtO Limits of Quantification: | |
| 6L Canister | 0.040 ppbv |
| Minican | 0.20 ppbv |
OVERCOMING COELUTION OF ETHYLENE OXIDE WITH TRANS-2-BUTENE
When analyzing real-world EtO samples, we observed that a chromatographic interferent was present quite often. This was consistent with the EPA, which noted in late 2018 that under certain conditions, there could be a coelution of EtO with trans-2-butene.
SGS Galson is dedicated to routine method evaluation while supporting continual improvement and innovation in all aspects of the analytical process. To this end, we have developed an improved method that resolves the coelution issue.
By changing the analytical column used for EtO analysis, along with changes of some other analytical parameters, we can remove the coelution of EtO and trans-2-butene and obtain a 3-minute separation between the two compounds. This separation results in reporting sound and unbiased results to be used to make critical decisions.
WE DETECT ETHYLENE OXIDE IN AMBIENT AIR AS LOW AS 0.040 PPBV
Why SGS Galson
No doubt, you will be receiving inquiries about ethylene oxide analysis and will be ready to respond quickly and effectively by familiarizing yourself with our procedure.
SGS Galson canisters are FREE unless returned unused. If returned unused, there is a $50 per can/regulator set cleaning fee. We also provide passive samplers and a pump and tube method, using our FreePumpLoan program for occupational applications or simple screening methods with higher LOQs.
And don’t forget that SGS EHS North America offers industry-leading environmental analytical services at multiple laboratories across the United States and Canada for soil, water, air and bulk materials. SGS is your one-stop for all your environmental and occupational health analytical needs.
Contact us
When you receive inquiries on ethylene oxide and you want a fast and thorough response, and to place your canister order, contact our award-winning Client Service Representatives by requesting a quote below.