Evaporation of Water

Rainwater is not pure like distilled water. There is plenty of stuff in it, and its makeup varies by location. The iodine contents of rain water diminishes as the distance from the coast increases.

Take into account gaseous iodine released by seaweed..

Wave action raises raises mist into the atmosphere near shorelines without evaporation. It referred to as 'atomization.' The atomized seawater particles 'rain' out onto the shore and then evaporate leaving salt as deposits.

Rap

atomized ocean evaporates contain all sorts of dissociated ions, including iodine and astatine. Sea salt also contains iodine and astatine as the ocean water evaporates in pools that get isolated from flushing. The multi acre salt pans at the base of the San Francisco airport are great examples of evaporate salts. Different bacteria colonize the various pans as the salt concentrations increase. These pasn take on severl different hues from the bacteria nd diatoms . Very neat colors patterns. I always hoped the planes didn't dump their looos right over the salt pans

Vapour pressure of sodium chloride is very low, and will not evaporate except at very high temperature. And when ocean water evaporates it only leaves nano scale particles of sodium chloride in air.

Evaporation is an essential part of the water cycle. The sun (solar energy) drives evaporation of water from oceans, lakes, moisture in the soil, and other sources of water. In hydrology, evaporation and transpiration (which involves evaporation within plant stomata) are collectively termed evapotranspiration. Evaporation of water occurs when the surface of the liquid is exposed, allowing molecules to escape and form water vapor; this vapor can then rise up and form clouds. The tracking of evaporation from its source on the surface of the earth, through the atmosphere as vapor or clouds, and to its fate as precipitation closes the atmospheric water cycle, and embodies the concept of the precipitation shed.

Hi Gollum,
Rain water is considered as purest form of water due to evaportion by sun, every impurity present in earth water is left behind during vaporization, so the rain water is pure, but when it comes down than we can't say that it is pure because when it comes down to the earth as rain, it dissolve all the impurities present in the air or atmosphere. So the iodine can't be transferred to the soil by the rain water which is evaporated from the ocean water.