Comments

Author Comment Last activity Moderation
gretchengehrke "Links to spectra sets in Spectral Workbench: ND Crude set: https://spectralworkbench.org/sets/2905 80W90 set: https://spectralworkbench.org/sets/..." | Read more » over 5 years ago
gretchengehrke "Hi Don, I was assuming the output would be in frequency for both, but there would be an algorithm before the graphing step to do a unit conversion,..." | Read more » over 5 years ago
gretchengehrke "Looks great! Two thoughts: (1) definitely important comment by Jeff about units and potentially a post-data-retrieval function for units conversio..." | Read more » over 5 years ago
gretchengehrke "Would it be useful for these folks to have balloon or kite mapping kits to take aerial photos of mine operations and expansions? " | Read more » almost 6 years ago
gretchengehrke "Update: Received word back from the Kitagawa company. Unfortunately, they were of no help, simply saying that "...tube 710 is designed for monito..." | Read more » almost 6 years ago
gretchengehrke "Just so this is recorded on this thread, here is my plan for moving forward: (1) Get information from the Kitagawa research team about co-contamina..." | Read more » almost 6 years ago
gretchengehrke "I'm happy to post my dissertation, but it has nothing to do with this (it explores natural Hg isotopic composition and fractionation in the marine ..." | Read more » almost 6 years ago
gretchengehrke "Ah, it makes sense why Hg(0) won't have a fluorescence line on compound fluorescent bulbs though: the liquid Hg(0) in the tube needs to be ionized ..." | Read more » almost 6 years ago
gretchengehrke "I am absolutely positive that the most common forms of Hg are Hg(0) and Hg(II) -- my whole PhD is on mercury, specifically on Hg isotopes. The onl..." | Read more » almost 6 years ago
gretchengehrke "I like this idea a lot, @DavidMack. One thing we've been talking about on staff is developing a sort of environmental monitoring guide, one sectio..." | Read more » almost 6 years ago
gretchengehrke "Oooh -- nice find, @DavidMack! Thanks! " | Read more » almost 6 years ago
gretchengehrke "Thanks, @warren, that would be great! I'll tag it for the blog too. " | Read more » almost 6 years ago
gretchengehrke "Here is a picture of the DNPH cartridge used in the DOH analysis, and one of Gretchen learning to use the DOH instrument. " | Read more » almost 6 years ago
gretchengehrke "Here are the graphs (not sure why they didn't show up in the original post): " | Read more » almost 6 years ago
gretchengehrke "@warren, I definitely agree that the idea of a centralized committee would be at odds with democratization of science. I was envisioning something..." | Read more » almost 6 years ago
gretchengehrke "Using the spectrometer and the online program Spectral Workbench, you observe light intensities. It is not exactly "UV-Vis" since the webcam of th..." | Read more » almost 6 years ago
gretchengehrke "Oh, and clarification for my comment above: oxidation states are simply different common ions. Hg (0) is neutral, Hg (II) is short two electrons,..." | Read more » almost 6 years ago
gretchengehrke "Hg (II), Hg (I), and Hg (0) are oxidation states of mercury. Hg (II) and Hg (0) are by far the most common forms of Hg in the environment -- Hg (I..." | Read more » almost 6 years ago
gretchengehrke "Please post pictures in the comment section that are good example photos. I intend to put this information into a wiki page soon, and would love t..." | Read more » almost 6 years ago
gretchengehrke "What kind of tampons did you use in this experiment? I was just looking up tampon materials, and it looks like different brands use cotton, rayon,..." | Read more » almost 6 years ago
gretchengehrke "Ecta64, that's a good point. Liz confirmed that they never used thermal imaging system on the Gowanus, so it must have been a miscommunication abo..." | Read more » almost 6 years ago
gretchengehrke "Hi Chris, Edan, whom I interviewed for this, was pretty adamant that the photos he saw and used were thermal images. I know specific kinds of came..." | Read more » about 6 years ago
gretchengehrke "Hi Chris, Thanks for the note! Good point -- I did not link to a thermal image there, nor use one for the lead image. I will sort through MapKnit..." | Read more » about 6 years ago
gretchengehrke "This is great. Using absorbent materials to concentrate aquatic contaminants for analysis has a good, long history and the next step -- extracting..." | Read more » about 6 years ago