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kaberettMeanwhile, in another part of the forest:
Only samples collected and stored by the British Museum since 1927, are affected by the contamination[.] (McDonough & Chauvel, EPSL, 1991)
... OKAY THEN I GUESS IT'S TIME TO WORK OUT WHETHER MY WEIRD SAMPLES WERE STORED BY THE BM SINCE 1927.
(no subject)
Date: 2015-02-19 04:45 pm (UTC)(no subject)
Date: 2015-02-20 02:36 am (UTC)(I thought it was a pressure-differential of 8000ft - which may have been how some of the older systems worked or I may have been consistently mis-reading the explanation for 30 years. Not that I've worked on any cabin pressurization systems, fortunately, though we did have a couple of cabin depressurizations during 777 flight test - quote from our on-board contact 'I'm getting too old for this shit')
(no subject)
Date: 2015-02-20 02:47 am (UTC)It doesn't really help, but I can't help thinking it so cool that I can drop the quote in your message into Google and find the exact paper to tell me what you've potentially run into! (And pinning two separate stories together, I'm instantly curious as to the level of lead contamination in the BM's air-con, and what 80 or 90 years of sitting in Pb-spiced air might do to a sample).
(no subject)
Date: 2015-02-20 10:20 am (UTC)