Re: Chinese water filter analysis
|
PS I just looked at your ZAG.mca- no scatter at all- same setup?
Geo
From: GEOelectronics@... To: [email protected]Sent: Sunday, November 8, 2020 9:05:41 AM Subject: Re: [XRF] Chinese water filter analysis
OK. One more test- use dry filter nothing on it ever. When you can. Then we can see where the scatter is coming from. Does this setup get that same scatter on regular testing of samples? Such as stones or metal?
From: "taray singh via groups.io" <sukhjez@...> To: [email protected]Sent: Sunday, November 8, 2020 8:29:02 AM Subject: Re: [XRF] Chinese water filter analysis
Both samples have water squeezed out? Yes they are on the wet side On Sunday, November 8, 2020, 10:23 PM, GEOelectronics@... wrote: OK Taray. Is there actual water or is the sample dried? It should be dried.
From: "taray singh via groups.io" <sukhjez@...> To: [email protected]Sent: Sunday, November 8, 2020 6:21:32 AM Subject: Re: [XRF] Chinese water filter analysis
Geo The bg is using Am241 exciter with no sample in front. The control is just plain filter paper soaked with RO water pressed against a plastic cap I know it quite confusing? Feel free to ask any questions Taray On Sunday, November 8, 2020, 7:58 PM, GEOelectronics@... wrote: Wow, that background count looks good Taray.? Is there an .mca with exciter and no target? Please tell me again the conditions for "control sample water"?
Geo
From: "taray singh via groups.io" <sukhjez@...> To: [email protected]Sent: Sunday, November 8, 2020 12:43:18 AM Subject: Re: [XRF] Chinese water filter analysis Hi guys
This is my latest update
The pics are self explanatory
The electrodes are screw in type and water level only covered the lower 2 thirds
No adjoining surface is in contact.
More importantly the electrodes seems clear of lead impurities.
Anyway this can be an interesting home study
Study of heavy metals in domestic tap water with xrf
Other methods are using activated charcoal or coffee ground
Coffee is readily available and has good absorption characteristics.
My next project will be coffee ground which is easy to sample
You don't need RO water.
Just collect early morning first flush tap water in some coffee ground
Dry into a cake and scan
Repeat several times if necessary to get the right concentration.
Taray
|
