![]() (less than 3 kph) to enable the detection of small-scale changes inĬH4 concentrations over short distances. Gatos Research ultraportable greenhouse gas analyzer (using aĬavity-enhanced absorption technique). Water by using a sprayer-type equilibrator and analyzed with a Los Water was pumped on board where gases were stripped from the Km) and fine grain (35,000 total measurements) by using aīiogeochemical mapping platform on a small boat. We determined stream CH4 concentrations at a large spatial extent (10 ![]() Were calculated according to Henry’s law and corrected by measured ambient We analyzed the gas samples for CO2 and CH4 withĪ gas chromatograph (GC-2014 Shimadzu Scientific Instruments) equipped withĪ methanizer and flame ionization detector. While in theįield, samples were stored in pouches within a survival suit to preventĮxtreme temperature change. Headspace was then equilibrated for 2 minutes by shaking and 10 mL ofĮquilibrated gas sample was then removed from the bottle and injected into aĥ.9 mL Labco Exetainer vial that had been previously vacuumed. Onwards, water was pumped into a closed bottle system, and using syringe,ġ05mL of water was extracted and 35mL of ambient air was added. The bottle and equilibrated by shaking for 90 seconds. Was pumped directly into the bottom of a 1-L Nalgene bottle and flushed withĪt least three times the volume before being capped with a rubber stopper.Ħ0 mL of ambient air was added while 60 mL of sample water was removed from ![]() From January to March 2020, water at each discrete depth Dissolved gas samples were collected at 0.5, 3, 5 and 7 m using the
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |