If you like this page, you can help us by clicking on our latest research paper in nature geoscience It is on CO2 release from continental shelves and you can read it for free here It has a wonderful graph that shows the relation between CO2 and sea-level during the last 800,000 years. This figure shows impressively how crazy our current CO2 levels are. You don't have to be a scientist to predict, where sea-levels might end up soon.
On Daltons please note: There is no direct conversion between molar weights in Dalton and pore size for several reasons: 1. The shape and size of a molecule is not directly related to its molar weight. In general a heavier molecule will need bigger filter meshes, but there is a lot of variation in weight to filter-mesh size, also due to possible molecule filter-surface interaction. You can only define precise pore width to molar weight relations for specific substances combined with specific filter materials. 2. The shape of the pores of different membranes might have very different properties for different liquids and different molecules 3. Small pore widths are usually in Daltons or molar weights, because pore width in length units become a bit useless below 200 nm, which is by definition considered in aquatic chemistry as the threshold between dissolved and solid. |
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