Sea air
The air at or by the sea
A sea generally refers to a large body of salt water, but the term is used in other contexts as well. Most commonly, it means a large expanse of saline water connected with an ocean, and is commonly used as a synonym for ocean...

is traditionally thought to be health
Health is the level of functional or metabolic efficiency of a living being. In humans, it is the general condition of a person's mind, body and spirit, usually meaning to be free from illness, injury or pain...

y. This was variously attributed to iodine
Iodine is a chemical element with the symbol I and atomic number 53. The name is pronounced , , or . The name is from the , meaning violet or purple, due to the color of elemental iodine vapor....

 or ozone
Ozone , or trioxygen, is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the diatomic allotrope...

 but its cleanliness or salt
Salt therapy
Salt therapy, halotherapy or speleotherapy is the therapeutic use of salt mines, caves or other forms of exposure to salt air.-Salt mines and caves:These natural deposits of mineral halite are derived from evaporated ancient lakes and seas...

 may be more significant.

In chemistry, salts are ionic compounds that result from the neutralization reaction of an acid and a base. They are composed of cations and anions so that the product is electrically neutral...

s generally do not dissolve in air, but can be carried by sea spray
Sea spray
Sea spray is a spray of water that forms when ocean waves crash.-Make up:As a result, salt spray contains a high concentration of mineral salts, particularly chloride anions.-Effects:...

 in the form of particulate matter.

In modern times, the quality of this air is now degraded by pollution
Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat or light...

 from shipping
Shipping has multiple meanings. It can be a physical process of transporting commodities and merchandise goods and cargo, by land, air, and sea. It also can describe the movement of objects by ship.Land or "ground" shipping can be by train or by truck...

 which burns high sulphur fuel in its engines and so generates large quantities of sulphate aerosols.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.