Sea traffic pollutes our lungs

New data presented by researchers show that the air along the coasts is full of hazardous nanoparticles from sea traffic. Almost half of the measured particles stem from sea traffic emissions, while the rest is deemed to be mainly from cars but also industries and natural particles from the sea.

“This is the first time an attempt has been made to estimate the proportion of nanoparticles stemming from sea traffic. The different types of nanoparticles have previously not been distinguished, but this new method makes it possible,” says Adam Kristensson, researcher.

Nanoparticles can be hazardous to our health as they, because of their small size, can penetrate deeper into the lungs than larger particles contributing to both cardiovascular and pulmonary diseases. A cubic centimetre can contain several thousand nanoparticles.

By comparing levels of nanoparticles, the researchers can draw conclusions about the respective proportions that stem from cars and other emissions, and sea traffic.

“It is especially important to restrict nitrogen oxides and sulphate content from ship fuel.”

Future will hopefully reduce the emissions of harmful nanoparticles, especially soot particles, which are considered the most hazardous.

“As researchers, we still have to look at what positive effects this has had so far with regard to the particle levels.”

Source :Science Daily

N.H.Kh