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NIPH study finds NDMA as one of the most carcinogenic compounds formed during CO2 capture

March 13, 2016

There is a lack of knowledge about nitramines but the compounds in this group are generally believed to be less carcinogenic than nitrosamines. However, studies show that the nitramine we know most about, (N-nitrodimethylamine) is a highly carcinogenic substance, although it is not as potent as NDMA.

The NIPH recommends that the risk estimate for NDMA is also used for nitramines. This must be regarded as a risk estimate that will provide good protection of the population. If nitramines are detected in significant quantities in emissions, there will be a need for more knowledge for the NIPH to be able to perform a full risk evaluation. 

Recommendation

When released from the CO2 capture plant, the NIPH recommends that the risk estimate for NDMA should be used for the total concentration of both nitrosamines and nitramines in air and water. We recommend maximum levels that provide minimal or negligible risk of cancer from exposure to these substances. The NIPH therefore concludes that the total amount of nitrosamines and nitramines should not exceed 0.3 ng/m3 (nanogram/m3) air.

SOURCE Norwegian Institute of Public Health