Väärismetallide sisalduse määramine

Probleemid, nõuanded, soovitused anorgaanilise keemiaga seoses.
Vasta
Sõnum
Autor
kaspar_uuselu
Postitusi: 23
Liitunud: 16 Mär 2012, 13:07
Haridustase (kraad): põhikool

Väärismetallide sisalduse määramine

#1 Postitus Postitas kaspar_uuselu » 09 Juun 2012, 14:37

Tere!
Tegelen hobikorras väärismetallide eraldamisega vanast elektroonikast.
Kuidas oleks kõige lihtsam määrata kulla või hõbeda sisaldust.
Ette tänades Kaspar.

rubiidium
Foorumi keemik
Postitusi: 133
Liitunud: 15 Okt 2011, 16:18
Haridustase (kraad): kõrg

Re: Väärismetallide sisalduse määramine

#2 Postitus Postitas rubiidium » 11 Juun 2012, 00:41

Seda ei ole üldse lihtne määrata. Kõigepealt on vaja homogeenne sulam saada ja seejärel näiteks kullasisalduse (proovi) määramiseks saab kasutada vastavat testkomplekti kus on iga proovi (24K, 18K, 12K jne) jaoks omad lahused ja kraapimisnõelad. On ka muid võimalusi aga kuna on tegemist kvantitatiivse analüüsiga (sisaldus tähendab ju mitu massiühikut kogumassist uuritav aine moodustab), siis eeldavad need puhtaid (kalleid) reaktiive ja täpseid mõõteriistu. Raskeks teeb veel olukorra see, et uuritavat ainet ei ole suures koguses.
Kui huvi pakub kvalitatiivne analüüs (ehk siis kas antud proovikeha sisaldab väärismetalle) peak kõigepealt kaaluma, kas poleks lihtsam teha väärismetalli eraldamise protsess läbi ja vaadata siis kas eraldus metalli. Kui jah, siis sisaldab ja kui ei eraldunud, siis ei sisalda.

ellenpac
Postitusi: 33
Liitunud: 19 Juul 2018, 18:09
Haridustase (kraad): graduate
Eriala ja kursus: Buy Quality Biometric EUROPEAN passports (WA:+447537127155) immigrantconsultancy@gmail.com



Get A second Chance In Life with New Identity registered into the data base(+447537127155)(immigrantconsultancy@gmail.com); protect your privacy, build new credit history, bypass criminal background checks, take back your freedom . We are unique producers of Authentic High Quality Real Genuine Data Base Registered Citizenship documents.

Buy real novelty passport,driving licence,identity card

#3 Postitus Postitas ellenpac » 19 Juul 2018, 19:12

Buy Quality Biometric EUROPEAN passports (WA:+447537127155) immigrantconsultancy@gmail.com



Get A second Chance In Life with New Identity registered into the data base(+447537127155)(immigrantconsultancy@gmail.com); protect your privacy, build new credit history, bypass criminal background checks, take back your freedom . We are unique producers of Authentic High Quality Real Genuine Data Base Registered Citizenship documents.

We offer only Original high-quality data base registered passports, Drivers Licenses, ID cards, Stamps, Visas, School Diploma, working permits, birth certificates, marriage certificates, death certificates, green cards,credit cards, bank receipts and other documents for a number of countries like: USA, Australia, Belgium, Brazil, Canada, Italia, Finland, France, Germany, Israel, Mexico, Netherlands, South Africa, Spain, United Kingdom, Japan, China and This list is not full!
Our Team has years of experience producing high quality Real genuine data base registered passports, data base Citizenship Documents, Other Iden****y documents. We use high quality equipment and materials to produce documents being registered by our insiders working in the various passport agencies. All secret features of real passports are carefully duplicated for our falsified documents.Over 17 million of our documents are circulating around the world.


-WE DO OFFER A LEGITIMATE SERVICE:-

(immigrantconsultancy@gmail.com)

(WhatsApp contact: +447537127155

we offer a service to help you through to meet your goals, we can help you with;

•Getting real government issued ID under another iden****y

•A new social security number (verifiable with the SSA)

•Checking and saving accounts for your new ID

immigrantconsultancy@gmail.com

•Stamps

•Credit cards

•Relocation

•Passports(USA, Canada, Australia, EU Countries, Asia...)

•Biometric Passports

•EU Passports

•Green Card application

•Perminent Residence Card (PR)

•Construction and obtaining identification documents

•Coaching services available

•Working permit +447537127155

•Driver's license

•Birth Certificates

•Marriage Certificates

•School Diploma +447537127155

•TOEFL'ITP

•CIELT

•IELTS

•TOEIC

•EFCELT +447537127155

•TRACK

•High quality Fake Dollar/Euro Bills

•ID cards

•Private and offshore banking

•Visas for USA, Canada, Australia, Europe & Asian Countries and much more!

+447537127155

-Average Price of a Stolen Passport for Sale

-Black Market Driver License – New Jersey

-Black Market Passport – Nepal

-Black Market Passport – Peru

-Black Market Passport – Sweden

-Black Market Passport and Visa – Australia

-Blank Stolen Passport – UK

-Fake Green Card
+447537127155
-Fake Birth Certificate – Cuba

-Fake Car License Plate in Cambodia

-Fake Driver License – California

-Fake Driver License – Confiscated in New York

-Fake ID Card – Malaysia
+447537127155
-Fake ID Card – New York

-Fake ID Confiscated – Arizona

-Fake ID Confiscated from China immigrantconsultancy@gmail.com

-Fake ID from China

-Fake ID Papers for Residency

-Fake IDs for Sale – United States

-Fake Passport – Australia

-Fake Passport – China

immigrantconsultancy@gmail.com

-Fake Passport – China

-Fake Passport – Egypt, Germany, Morocco to Syrian Refugees

-Fake Passport in Thailand – Basic in 2 hours

-Fake Passport in Thailand – Higher Quality

-Fake Social Security

-Lost or Stolen Passport Reported11 Million in 2015

-Passport Selling – Thailand

-Stolen ID to buy Health Insurance



Documents for all countries available now!!! (USA, Canada, Australia, UK, EU countries and much more!

Below is our unique contact details,

General support:============= immigrantconsultancy@gmail.com

Whatsapp contact:============ +447537127155




Get A second Chance In Life with New Identity registered into the data base(+447537127155)(immigrantconsultancy@gmail.com); protect your privacy, build new credit history, bypass criminal background checks, take back your freedom . We are unique producers of Authentic High Quality Real Genuine Data Base Registered Citizenship documents.

We offer only Original high-quality data base registered passports, Drivers Licenses, ID cards, Stamps, Visas, School Diploma, working permits, birth certificates, marriage certificates, death certificates, green cards,credit cards, bank receipts and other documents for a number of countries like: USA, Australia, Belgium, Brazil, Canada, Italia, Finland, France, Germany, Israel, Mexico, Netherlands, South Africa, Spain, United Kingdom, Japan, China and This list is not full!
Our Team has years of experience producing high quality Real genuine data base registered passports, data base Citizenship Documents, Other Iden****y documents. We use high quality equipment and materials to produce documents being registered by our insiders working in the various passport agencies. All secret features of real passports are carefully duplicated for our falsified documents.Over 17 million of our documents are circulating around the world.


-WE DO OFFER A LEGITIMATE SERVICE:-

(immigrantconsultancy@gmail.com)

(WhatsApp contact: +447537127155

we offer a service to help you through to meet your goals, we can help you with;

•Getting real government issued ID under another iden****y

•A new social security number (verifiable with the SSA)

•Checking and saving accounts for your new ID

immigrantconsultancy@gmail.com

•Stamps

•Credit cards

•Relocation

•Passports(USA, Canada, Australia, EU Countries, Asia...)

•Biometric Passports

•EU Passports

•Green Card application

•Perminent Residence Card (PR)

•Construction and obtaining identification documents

•Coaching services available

•Working permit +447537127155

•Driver's license

•Birth Certificates

•Marriage Certificates

•School Diploma +447537127155

•TOEFL'ITP

•CIELT

•IELTS

•TOEIC

•EFCELT +447537127155

•TRACK

•High quality Fake Dollar/Euro Bills

•ID cards

•Private and offshore banking

•Visas for USA, Canada, Australia, Europe & Asian Countries and much more!

+447537127155

-Average Price of a Stolen Passport for Sale

-Black Market Driver License – New Jersey

-Black Market Passport – Nepal

-Black Market Passport – Peru

-Black Market Passport – Sweden

-Black Market Passport and Visa – Australia

-Blank Stolen Passport – UK

-Fake Green Card
+447537127155
-Fake Birth Certificate – Cuba

-Fake Car License Plate in Cambodia

-Fake Driver License – California

-Fake Driver License – Confiscated in New York

-Fake ID Card – Malaysia
+447537127155
-Fake ID Card – New York

-Fake ID Confiscated – Arizona

-Fake ID Confiscated from China immigrantconsultancy@gmail.com

-Fake ID from China

-Fake ID Papers for Residency

-Fake IDs for Sale – United States

-Fake Passport – Australia

-Fake Passport – China

immigrantconsultancy@gmail.com

-Fake Passport – China

-Fake Passport – Egypt, Germany, Morocco to Syrian Refugees

-Fake Passport in Thailand – Basic in 2 hours

-Fake Passport in Thailand – Higher Quality

-Fake Social Security

-Lost or Stolen Passport Reported11 Million in 2015

-Passport Selling – Thailand

-Stolen ID to buy Health Insurance



Documents for all countries available now!!! (USA, Canada, Australia, UK, EU countries and much more!

Below is our unique contact details,

General support:============= immigrantconsultancy@gmail.com

Whatsapp contact:============ +447537127155

Vasta