We are busy with a study where it would be nice if we could
precipitate/extract C, S, Sr and Pb from water in the field. The major
time consuming factor here is filtering before precipitation or
extraction. This is complicated further by low Pb concentrations in a
lot of the water that we would be sampling and the need for large
samples. At the moment our procedures all require sampling, followed by
filtration (ideally in the field but generally in the lab) and the
chemistry in the lab. Has anyone tried this?