Dear all,
Stan Halas' last message reminded me of the difference between the
BDH and the Bloomington zincs. Some batches of the Bloomington
zinc show huge amount effect, some show less. The amount effect
is negligible with the BDH zinc. As far as I remember Stan Halas
use BDH zinc, that would explain why he hasn't observed H2 "loss"
(if the problem is formation Zn-hydroxide).
Best regards,
Attila
Dr. Attila Demeny
Laboratory for Geochemical Research
Hungarian Academy of Sciences
Budapest, Budaorsi ut 45, H-1112, Hungary
tel/fax: 36-1-319-3145
e-mail: [log in to unmask]