Beside sampling from a stagnant area with no flow!... this douche rinses out the sampling vessel (which should have been decontaminated BEFORE going into the field) and when he pours the water out, he's kicking up sediments! That'll give you quality nitrate data- NOT! Why don't you just go swim in that pond andkick the dirt around, then collect your sample?
@2184roberto, it seems like this video really irritated you. Here's a couple of things that might help. First, flow isn't always visible. Often wetlands don't have water flowing fast enough for you to see. Besides, even the water quality of a "stagnant area" could be of interest.
Second, you want a representative sample. Rinsing with the same water you are sampling has the same concentrations as your sample. Rinsing with some other water could dilute or increase the concentration of the sample, so using the water you are sample to rinse in the field makes a lit of sense. And finally, nitrate is water soluabe and not bound to the sediments. Stirring up some sediments would have little to no impact.
@bradleymiller76 ...2184Roberto says: You should read up on "particulate nitrogen" , PON, and adsorbed ammonia. Ammonia sorption to particulates (like sediments) can be extensive. Solubility is partly dependent upon pH as well. Not sure where you got the idea that nitrate is not bound to sediments????????? This is what happens when wannabe scientists try to act like chemists- not good for the environment
Beside sampling from a stagnant area with no flow!... this douche rinses out the sampling vessel (which should have been decontaminated BEFORE going into the field) and when he pours the water out, he's kicking up sediments! That'll give you quality nitrate data- NOT! Why don't you just go swim in that pond andkick the dirt around, then collect your sample?
2184roberto 6 months ago
@2184roberto, it seems like this video really irritated you. Here's a couple of things that might help. First, flow isn't always visible. Often wetlands don't have water flowing fast enough for you to see. Besides, even the water quality of a "stagnant area" could be of interest.
bradleymiller76 6 months ago
Second, you want a representative sample. Rinsing with the same water you are sampling has the same concentrations as your sample. Rinsing with some other water could dilute or increase the concentration of the sample, so using the water you are sample to rinse in the field makes a lit of sense. And finally, nitrate is water soluabe and not bound to the sediments. Stirring up some sediments would have little to no impact.
bradleymiller76 6 months ago
@bradleymiller76 ...2184Roberto says: You should read up on "particulate nitrogen" , PON, and adsorbed ammonia. Ammonia sorption to particulates (like sediments) can be extensive. Solubility is partly dependent upon pH as well. Not sure where you got the idea that nitrate is not bound to sediments????????? This is what happens when wannabe scientists try to act like chemists- not good for the environment
launcheverything 6 months ago