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Originally posted by OzWeatherman
Now, oil cant actually evaporate as a whole. It is composed of many components, including benzene, hydrocarbons, nitrogen, sulfur and various heavy metals. The temperature at which oil will begin to break down and seperate these components is approximately 650F (400C), which is a temperature the earth is not capable of producing naturally. However, lighter components within the oil such as some hydrocarbon based gases will be lost in the few days through evaporation, while the heavier, more toxic parts of the oil (such as the polyaromatic compounds, which are the more carcinogenic compounds) will be left in the water.
Fortunantly, hydrocarbons will not bond with water molecules, meaning there will not be any trace of these within the water droplets and ice crystals forund in rain bearing clouds (including benzene). However, due to the light weight of these materials, they are able to be transported with winds. (Where and in how much of a concentration these affect, is highly dependant on wind directions and speed). This is probably why, many residents of beaches within close proximity to the spill, may expererience slight nasuea or headaches, along with a faint smell. Astnmatics shoudl take particlar care, as these chemicals have the potential to irritate the throat and lungs in high enough levels. Hopefully though, before it these materials reach inland, the chemicals will have been dispersed enough to safer levels.
So, recapping what I said:
1. It will not rain oil, as the components either too heavy in molecular weight, or will not bond with water molecules
2. Air pollution from the lighter chemicals may cause issues, but will be highly dependant on winds
Relax a little bit people, it will not rain oil, its physically impossible for this to occur, but as I mentioned, also be wary of winds and people with respiratory illness should pay particular attention to the forecast of wind directions.
Originally posted by tetrahedron
Weather phenomena with the presence of crude and the products of combustion have been observed, furthermore:
“Previous investigations of the weathering of crude oilslicks on the sea have demonstrated that all of the lower boiling components evaporate or dissolve within a few hours of slick initiation (2-5). Although little is known of the relative percentages of loss of these slick components due to evaporation and dissolution, it is assumed that they are mainly lost by evaporation, at least under conditions of low sea-surface roughness. Detailed studies of the fate of slick components during the early stages of slick aging are crucial because the lower boiling fractions contain almost all of the lethal components of the slick (6)”
Originally posted by Alethea
Why have my flowers stopped blooming?
I am near the gulf and we have rain almost every day.
Originally posted by trolleleet
Another OP working for BP sigh, they are taking over the world.
"The following compound groups were identified in the precipitation samples: n-alkanes in the range of n-C13-n-C26, acyclic isoprenoids (mainly pristane and phytane), polycyclic aromatic hydrocarbons with 3-6 condensed aromatic rings and in some cases also their aliphatic derivatives, oxygenation products of polycyclic aromatic hydrocarbons, carboxylic acids and their methyl esters, phenol derivatives, sterols and several functionalised compounds of anthropogenic or vegetation origin such as dihydromethyljasmonate, diethyltoulamide and 8,12-epoxylabd-14-ene. n-Alkanes present in the samples show a distribution type similar to that found in both coal extracts or in crude oils (Fig. 1). It indicates the importance of these sources participating in air contamination. "