I collected first flush from unused faucets and a reddish brown sludge was subsequently??added??to used coffee ground .?
Soaked overnight?
Excess water drained out and coffee put to dry in the sun
Subsequently repacked in thin kitchen plastic and scanned overnight?
Xrf findings show Fe,Ni ,Zn and lead?
A test of shorter duration??of clean used coffee show weaker peaks??somewhat similar.
Putting together the old faucet structure and this finding makes me arrive to a certain conclusion?
Zinc faucets a potent corrosive agents
The stagnant water in the faucet and??the proximal plumbing system is accounting for a build up of heavy metals?
If left alone it will eventually cause total blockage like what happened??to this faucet?
This coffee ground is all also a reflection??of the state of the water used at the primary source??and the actual brewing process where heating elements leached
metals into the coffee
This coffee ground came from hospital lounge?
Apparently all drinking water there is prefiltered
So far nobody I contacted including??the technicians could tell me the nature of the heating elements used in my??coffee maker?
Ni ,Cr,Al or steel are common heating coils.
The coffee beans have some natural elements present excluding any poor irrigation??system at the plantations.
I have to do test on clean coffee beans and a another for the used coffee ground to get a clear picture of my faucet findings.
But putting all the pieces together does suggest my tap water water contain measurable heavy??metals?
Pics are coffee ground residue??/clean coffee 4096 mca?
I think I will take a coffee break??for now
Taray
On Monday, November 16, 2020, 2:22 AM, GEOelectronics@... <GEOelectronics@...> wrote:
First being shown is Taray's "Tap sediment end.mca) loaded into live_data_2 and showing as? solid red
peaks
with the "Tap brass.mca" loaded in live_data_1 with its peaks showing as black outlines. If the user wished to see only one set of peaks, the other ones would have been set to H for HIDE instead of left with no letter in the front. If set up that way, you can animate them back and forth with keystrokes. Sometimes overlaying the peaks is too busy to be effective.
I've highlighted different peaks, especially the Pb Ka1. It will be clearer in the second picture what a big difference there is at 10.55kev between the scans. To me this would definitely raise a red flag for Pb but at this stage is not definite enough to call it 100%. Further testing would be merited and could swing it one way or the other.
All colors are set by the user as is their intensity (# of pixels)
Notice at the top of the display it is showing the name of the active .mca file. When we change the other file to being active instead, this will change to that file name.
Now the same two scans, but switched with the outline becoming solid red and vise versa.
To me the 10.55keV difference is much clearer in this setting. Close but about half a channel off Pb
.
However below see how we can expand down to 1 keV full width (less is possible, and this scan was taken with only 2048 channels, we can do up to 8k channels for even better resolution but longer scan time).
1 keV = 1000 electron-volts. Look how many individual peaks can be inside a single keV.
Have fun?
Geo
