microwave pressure digestion technology - onlinecas.com mws2... · microwave digestion of brass...
TRANSCRIPT
V. 4.0
MWS-2
Application Report
Microwave Pressure Digestion
Technology
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF BRASS
Summary Digestion of brass with a mixture of nitric acid and hydrofluoric acid using aBerghof microwave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%HF 40%H3BO3 satturated solution
Procedure 1st step:Weigh 100 mg of the sample into the digestion vessel. Add 2 ml of nitric acid,8 ml of hydrofluoric acid and shake the mixture carefully or stirr with a cleanteflon or a glass bar. Wait at least 2 min before the vessel is closed. Heat inthe microwave oven with the following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 180 100Power* [%] 80 85 lowTime [min] 20 10 30Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Microwave Digestion of Brass
Seite 2 / 2 BERGHOF Products + Instruments GmbHHarretstr. 1 • 72800 Eningen • Germany
2nd step:Add 10ml of the boric acid solution, close the vessel and heat in themicrowave oven with the following temperature program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 100Power* [%] 90 lowTime [min] 15 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF BRASS
Summary Digestion of brass with nitric acid using a Berghof microwave digestionsystem.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%
Procedure Weigh 100 mg of the sample into the digestion vessel. Add 8 ml of nitric acidand shake the mixture carefully or stirr with a clean teflon or a glass bar. Waitat least 2 min before the vessel is closed. Heat in the microwave oven withthe following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 210 100Power* [%] 80 85 lowTime [min] 10 20 30Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF BRONZE
Summary Digestion of bronze with a mixture of nitric acid and hydrofluoric acid using aBerghof microwave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%HF 40%H3BO3 satturated solution
Procedure 1st step:Weigh 100 mg of the sample into the digestion vessel. Add 2 ml of nitric acid,8 ml of hydrofluoric acid and shake the mixture carefully or stirr with a cleanteflon or a glass bar. Wait at least 2 min before the vessel is closed. Heat inthe microwave oven with the following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 180 100Power* [%] 80 85 lowTime [min] 20 10 30Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Microwave Digestion of Bronze
Seite 2 / 2 BERGHOF Products + Instruments GmbHHarretstr. 1 • 72800 Eningen • Germany
2nd step:Add 10ml of the boric acid solution, close the vessel and heat in themicrowave oven with the following temperature program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 100Power* [%] 90 lowTime [min] 15 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF BRONZE
Summary Digestion of bronze with nitric acid using a Berghof microwave digestionsystem.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%
Procedure Weigh 100 mg of the sample into the digestion vessel. Add 8 ml of nitric acidand shake the mixture carefully or stirr with a clean teflon or a glass bar. Waitat least 2 min before the vessel is closed. Heat in the microwave oven withthe following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 210 100Power* [%] 80 85 lowTime [min] 10 20 30Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF UNBURNED AND BURNEDCLAY
Summary Digestion of unburned and burned clay with a mixture of nitric acid andhydrofluoric acid using a Berghof microwave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%HF 40%H3BO3 satturated solution
Procedure 1st step:Weigh 100 mg of the sample into the digestion vessel. Add 7ml water, 5 ml ofnitric acid, 2 ml of hydrofluoric acid and shake the mixture carefully or stirrwith a clean teflon or a glass bar. Wait at least 2 min before the vessel isclosed. Heat in the microwave oven with the following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 210 100Power* [%] 90 lowTime [min] 30 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Microwave Digestion of unburned and burned clay
Seite 2 / 2 BERGHOF Products + Instruments GmbHHarretstr. 1 • 72800 Eningen • Germany
2nd step:Add 20ml of the boric acid solution, close the vessel and heat in themicrowave oven with the following temperature program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 100Power* [%] 80 lowTime [min] 15 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results Unburned clay is digested completely. Burned clay gives a clear solution witha fine precipitate.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF OILS
Summary Digestion of oils (silicon oils, used oils) with a mixture of nitric acid andhydrofluoric acid using a Berghof microwave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%HF 40%H3BO3 satturated solution
Procedure 1st step:Weigh 100 mg of the sample into the digestion vessel. Add 5 ml of nitric acid,2 ml of hydrofluoric acid and shake the mixture carefully or stirr with a cleanteflon or a glass bar. Wait at least 2 min before the vessel is closed. Heat inthe microwave oven with the following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 140 160 190Power* [%] 60 80 80Time [min] 10 10 10Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Microwave Digestion of Oils
Seite 2 / 2 BERGHOF Products + Instruments GmbHHarretstr. 1 • 72800 Eningen • Germany
2nd step:Add 20ml of the boric acid solution, close the vessel and heat in themicrowave oven with the following temperature program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 100Power* [%] 80 lowTime [min] 15 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF OILS
Summary Digestion of oils (silicon oils, used oils) with a acid mixture using a Berghofmicrowave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%HCl 37%HF 40%H3BO3 satturated solution
Procedure 1st step:Weigh 100 mg of the sample into the digestion. Add 3 ml of nitric acid, 3 ml ofhydrochloric acid, 2 ml of hydrofluoric acid and shake the mixture carefully orstirr with a clean teflon or a glass bar. Wait at least 2 min before the vessel isclosed. Heat in the microwave oven with the following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 140 160 180Power* [%] 60 80 80Time [min] 10 10 10Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Microwave Digestion of Oils
Seite 2 / 2 BERGHOF Products + Instruments GmbHHarretstr. 1 • 72800 Eningen • Germany
2nd step:Add 5ml of the boric acid solution, close the vessel and heat in the microwaveoven with the following temperature program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 100Power* [%] 80 lowTime [min] 15 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF POLYETHYLENE PE
Summary Polyethylene-pellets (PE) are digested in acid solution with a Berghofmicrowave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%H2SO4 95-97%
Procedure Weigh 200 mg of the sample into the digestion vessel. Add 3ml of nitric acidand 3ml of sulfuric acid. Close the vessel and heat in the microwave ovenwith the following program.
Temperature Program Step 1 2 3 4T [°C] 160 220 100Power* [%] 80 90 40Time [min] 5 40 30Wait until the vessels have cooled to room temperature (about 20 min). Carefully open thedigestion vessel in a fume hood wearing hand, eye and body protection since a large amountof gas will be produced during the digestion process.
Results Clear solution.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OFPOLYETHYLENTEREPHTHALATE (PET)
Summary Polyethylenterephthalate-pellets (PET) are digested in acid solution with aBerghof microwave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%H2SO4 95-97%
Procedure Weigh 150 mg of the sample into the digestion vessel. Add 3ml of nitric acidand 3ml of sulfuric acid. Close the vessel and heat in the microwave ovenwith the following program.
Temperature Program Step 1 2 3 4T [°C] 160 225 100Power* [%] 80 90 40Time [min] 5 40 30Wait until the vessels have cooled to room temperature (about 20 min). Carefully open thedigestion vessel in a fume hood wearing hand, eye and body protection since a large amountof gas will be produced during the digestion process.
Results Clear solution.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF POLYESTER
Summary Polyester-pellets are digested in acid solution with a Berghof microwavedigestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%H2SO4 95-97%
Procedure Weigh 150 mg of the sample into the digestion vessel. Add 3ml of nitric acidand 3ml of sulfuric acid. Close the vessel and heat in the microwave ovenwith the following program.
Temperature Program Step 1 2 3 4T [°C] 160 215 100Power* [%] 80 90 40Time [min] 5 20 30Wait until the vessels have cooled to room temperature (about 20 min). Carefully open thedigestion vessel in a fume hood wearing hand, eye and body protection since a large amountof gas will be produced during the digestion process.
Results Clear solution.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF POLYPROPYLENE PP
Summary Polypropylene-pellets (PP) are digested in acid solution with a Berghofmicrowave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%H2SO4 95-97%
Procedure Weigh 150 mg of the sample into the digestion vessel. Add 3ml of nitric acidand 3ml of sulfuric acid. Close the vessel and heat in the microwave ovenwith the following program.
Temperature Program Step 1 2 3 4T [°C] 160 200 100Power* [%] 80 90 40Time [min] 5 40 30Wait until the vessels have cooled to room temperature (about 20 min). Carefully open thedigestion vessel in a fume hood wearing hand, eye and body protection since a large amountof gas will be produced during the digestion process.
Results Clear solution.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF SOLDER
Summary Solder is digested in an acid solution with a BERGHOF microwave digestionsystem.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAC-70 Berghof Products + Instruments, Germany
Reagents HNO3 65%HCl 37%
Procedure Weigh 300 mg of the sample into the digestion vessel and add 2.5 ml of nitricacid and 7.5 ml hydrochloric acid. Shake the mixture carefully or stirr with aclean teflon or glass bar. Wait at least 5 min. before the vessel is closed.Heat in the microwave oven with the following program.
Temperature Program Step 1 2 3 4T [°C] 150 180 100Power* [%] 70 90 40Time [min] 10 10 10To avoid foaming and splashing wait until the vessels have cooled to room temperature (about30 min). Carefully open the digestion vessel in a fume hood wearing hand, eye and bodyprotection since a large amount of gas will be produced during the digestion process.
Digestion vessels shall be rinsed with hydrochloric acid. Rinsing and dilutingwith Water may lead to precipitates like AgCl or SnCl2.
Results Clear solution
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 5 samples. Increase or decrease the power by 20% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.
BERGHOF Products + Instruments GmbHLabor-Technik
Harretstr. 1 • 72800 Eningen • GermanyTel.: +49 7121 894-0 • Fax: +49 7121 894-300http://www.berghof-instruments.de
Contact:Dr. Dieter Gutwerk Tel.: +49 7121 894-127 • E-Mail: [email protected]. Rainer Krämer Tel.: +49 7121 894-142 • E-Mail: [email protected]
M W S - 2
MICROWAVE DIGESTION OF TALCUM POWDER
Summary Digestion of talcum powder with a mixture of nitric acid and hydrofluoric acidusing a Berghof microwave digestion system.
Equipment Type ManufacturerMWS-2 Berghof Products + Instruments, GermanyDAP-60K Berghof Products + Instruments, Germany
Reagents HNO3 65%HF 40%H3BO3 satturated solution
Procedure 1st step:Weigh 200 mg of the sample into the digestion vessel. Add 5 ml of nitric acid,2 ml of hydrofluoric acid and shake the mixture carefully or stirr with a cleanteflon or a glass bar. Wait at least 2 min before the vessel is closed. Heat inthe microwave oven with the following program.
Temperature Program Step 1 2 3 4 5 6T [°C] 150 210 100Power* [%] 85 95 45Time [min] 5 30 20Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Microwave Digestion of Talcum Powder
Seite 2 / 2 BERGHOF Products + Instruments GmbHHarretstr. 1 • 72800 Eningen • Germany
2nd step:Add 20ml of the boric acid solution, close the vessel and heat in themicrowave oven with the following temperature program.
Temperature Program Step 1 2 3 4 5 6T [°C] 160 100Power* [%] 80 lowTime [min] 15 15Wait until the vessels have cooled to room temperature. Carefully open the digestion vessel ina fume hood wearing hand, eye and body protection.
Results The samples are digested completely.
Notes: This application serves only as a guide line and may need to be optimised for yoursample.*This application is outlined for 10 samples. Increase or decrease the power by 10% persample, when using more or less samples. Minimum power is 40% indepentant of the samplenumber.