Reflections on the Alpha Oil Testing Kit
[to be continued]
Team Orca has rolled over. Eustis, Henderson, Jen (adios), Kearney (out of pocket).
GMC has a need for field testing for oil.
1) is this Oil? the smell test is great, but the media wants visuals.
2) Is this BP's Oil? This will require some fingerprinting and spectralworkbench. This is a very tough question and the pros like Ed Overton at LSU, are having some trouble doing this as time passes. Can we make things work in field conditions?
[this is part one, non spectrometer results, appropriate for field]
[link older notes here, with the Orca tag] http://publiclab.org/notes/eustatic/08-01-2013/making-grand-isle-coffee
What was tested
<5mW vs <1000,W UV laser
--no difference to "eyeball" , both same freq
Control Mineral Oil and Coal Dust in Mineral Oil
So here we show the mineral oil, mineral oil with coal dust (shows the laser with minimal fluoresce) and Grand Isle Coffee 100x (laser stopped before olive oil)
BP tar ball 100x, Grand Isle, 2013 (grand isle coffee) in mineral oil
West Bay, TX after the Kirby Y spill
Bay Batiste water (no mineral oil except at top of vial)
purple shows color of laser
Bay Batiste Soil
[When, where, what]
Now we know that unknown oil isn't veggie oil, and is more likely crude. but BP crude? Corexit?
Things that went well
like the rubber pipetters
mineral oil container less spilly and gross than commerical mineral oil ("top best" or some such)
nice small cuvettes for samples, but we defaulted to 30ml Barnes droppers for cuvettes
need oily proof labels, like painters tape, avery labels would not stick.
tyvek tape sticks!
Suggestions to improve the tool
main image much larger https://farm6.staticflickr.com/5233/14324445688_189d7e59a6_h.jpg