Re: Chinese water filter analysis
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" Remember telling me about rubber automobile before. Couldn¡¯t figure out where to find one really.."
OK here's a confession. Look behind a automobile epair garage or oil change business, for scraps thrown away. Also Here in US we have car parts stores, where they cut rubber hose to length. Sometimes they have a very short new piece ready to be thrown away, Mine is definitely a used on, less than 1 inch long, Maybe 1/4" diameter and I cut it into 2 pieces for testing. Much (if not most) of what I test is scraps, some include floor swipes with a cotton Q-tip.
Geo
From: "taray singh via groups.io" <sukhjez@...> To: [email protected]Sent: Monday, November 9, 2020 10:01:16 AM Subject: Re: [XRF] Chinese water filter analysis
Geo My biggest Pb surprise was black rubber automobile and garden hose. No idea why it's there but unmistakable....
Remember telling me about rubber automobile before. Couldn¡¯t figure out where to find one really.. Interesting.., Do you mean a new ?or used one.? Perhaps it has something to do with vulcanization of rubber? Meanwhile will check out my garden hose Taray On Monday, November 9, 2020, 10:49 PM, GEOelectronics@... wrote: Good work Taray.
Geo
From: "taray singh via groups.io" <sukhjez@...> To: [email protected]Sent: Monday, November 9, 2020 7:48:13 AM Subject: Re: [XRF] Chinese water filter analysis
Charles Next time if I am forced to use a plastic container for my XRF,I gonna opt for clear plastic ones Taray On Monday, November 9, 2020, 9:24 PM, Charles David Young <charlesdavidyoung@...> wrote: Hi Taray,
I was scanning a specimen that I had lazily left on its black plastic mount.? I was seeing a clear Br peak but was told (I believe by Steve Dubyk) that this was not likely.? With a little googling I saw that Br is a common fire retardant in plastic.
I had not realized that Pb is also common in plastic.? That is good to know as well.
Charles
Hi guys
Repeated this test with different sample setups.
MCA 's are for
Residue paper only ...dried
Residue paper with cap
Sample cap with residue paper
Clean sample paper only
Clean sample cap .
The results show
Most of scattering is from the cap
The "Pb" peaks were coming from the cap
The Fe peak is coming from the residue paper
I also put in a file about recycling plastics and heavy metals
As a whole ,I improved my settings and hope to improve further.
Will continue other testing methods.
Thanks
Taray
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