Why dried apricots contain more iron than whole apricots?
They don’t. Dried apricots don’t contain more iron than whole apricots just like no dried fruit contains more iron than its whole fruit counterpart.
About 85% of a whole apricot is water and about 0,4% is iron. When an apricot is dried, it is deprived of 85% of its content, but it still contains the same amount of iron.
Therefore, one whole apricot and one dried apricot contain the same amount of iron. The only thing that is different is the ratio of the amount of iron and the total content in an apricot.
With that said, water is important and foods that are rich with iron are legumes such as beans and lentils, whole grains, green leafy vegetables, nuts, and seeds, and for a better absorption of iron in those foods, one can consume foods that are rich with Vitamin C such as bell peppers, broccoli, oranges, lemons, etc.