Vitamin B 12 content varied from negligible to 32 pg per ml and it was also found in rainwater collected directly into 95% ethanol, which prevented any microbial activity in the interval between collection and assay.
Are there vitamins in rainwater?
It was concluded that vitamin B 12 was produced before the rain reached the ground but whether during or before rainfall was not known. The theory that soil particles, from agricultural areas, blown into the atmosphere by the wind, are the chief sources of vitamin B 12 in rainwater was discussed.
Are there any minerals in rain water?
Rain water is relatively low in mineral content. In practice, people drink rainwater from streams and wells, where it has had ample opportunity to pick up minerals from soil and rock. Rain water contains very low amounts of salts and other nitrates but it takes in any gas present in air.