Subject triamines

Chan, H.K. Daciskas, E. Eberl, S. Robinson, M. Bautovich, G. Young, I. Deposition of aqueous aerosol of technetium-99m diethylene triamine penta-acetic acid generated and delivered by a novel system (AERx ) in healthy subjects. Eur. J. Nuclear Med. 1999, 26, 320-327. Denyer, J. Adaptive aerosol delivery in practice. Eur. Respir. Rev. 1997, 7, 388-389. 

Fig. 12. Trace element/Ca ratios of foraminifera subject to different cleaning procedures, (a) Mn/Ca, (b) Mg/Ca and (c) Sr/Ca. Samples cleaned using procedure A were subject to ultrasonication in methanol, oxidation and a weak acid leach. Those cleaned using procedure B were subject to additional reductive cleaning, and those cleaned using procedure C were subject to additional reductive cleaning as well as cleaning in DTPA (diethylene triamine pentaacetic acid). DTPA removes refractory phases rich in Ba and the rare earth elements (e.g. Haley Klinkhammer 2002). Note that the introduction of the reductive cleaning step significantly lowers Mn/Ca and also lowers Mg/Ca. Reductive cleaning has no resolvable effect on Sr/Ca. DTPA has little effect on Mn/Ca, Mg/Ca or Sr/Ca. Error bars (where visible) represent the standard deviation of the mean of two (0. universa) or three (G. conglomerata) separate analyses. Data are from Hathorne (2004).

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