I will do some digging for you but several algae standards that I looked at do not have any data on Ag, not even informational values. There is also little in the literature (although for other metals there is an astonishing amount). The only paper I found upon quick search is Guven et al. (Botanica Marina 36, 2003, 175-178) who did a survey of macroalgae in the Bosporus and found Ag tissue concentrations of about 0.75 ppm (based on dry weight). Algae are hyperaccumulators of many metals so Ag should not be a huge problem analytically. There just doesn't seem to be as much interest in Ag for some reason.
Out of curiosity, are you interested in marine or freshwater algae? This can be important because the water concentrations are different and marine algae have an unusual cell wall composition, which leads to very different binding modes. Johan.
"[...] more than half the banana genome is shared with humans (a fact more
evident among some of my acquaintances than others)" - Sir Robert May
Dr. Johan Schijf
Assistant Professor, Aquatic Environmental Geochemistry
UMCES/Chesapeake Biological Laboratory
P.O. Box 38, 1 Williams Street
Solomons, MD 20688-0038
Tel. (410) 326-7387 (office) 7392 (lab)
Fax (410) 326-7341
e-mail: [log in to unmask] Manuel Ramiro Dias Pastorinho <[log in to unmask]>:
> Dear Plasmachemists,
> do any of you know of the existence of a CRM for silver in algae?
> And by the way: apparently CRMs for silver in any matrix appear to be
> totally nonexistent. Is there a particular reason?
> I'm a biologist, hence the overwhelming ignorance pertaining all
> things chemical...