WCL (Wet Chemistry Lab) sample |
WCL (Wet Chemistry Lab) sample |
Jun 25 2008, 12:18 AM
Post
#1
|
|
Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
We'll soon know what kinds of crops we can grow on Mars! Bonus, the fruits will be already freeze-dried!
Handy list of preferred pH's of common garden plants. -Mike -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
|
|
|
Jun 26 2008, 07:00 PM
Post
#2
|
|
Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
Not surprising. The pH is a rather quirky parameter that is also temperature dependent (although that may not be entirely relevant here). The WCL takes a sample of the regolith/soil and introduces it to water at an un-martian temperature. I get many hits to "phoenix pH WCL" and need to sort through them.
My first thought is that the high pH is from hydroxyl ions, but we'll need to see the entire chemistry to figure out what is happening. Here is a quick-and-dirty explanation of pH _vs_ temperature: http://www.lenntech.com/Correlation-betwee...Temperature.htm which, again, may not be entirely relevant here. --Bill -------------------- |
|
|
Lo-Fi Version | Time is now: 27th September 2024 - 10:36 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |