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Analyses of metals in pulp and chips
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| MF-1 Metals in pulp and chips |
| Al (24) |
As (10) |
Ba (0.2) |
Ca (40) |
Cd (2) |
| Co (2) |
Cr (2) |
Cu (2) |
Fe (10) |
K (100) |
| Mg (16) |
Mn (0.5) |
Mo (2) |
Na (24) |
Ni (2) |
| P (6) |
Pb (10) |
Ti (2) |
V (2) |
Zn (1) |
| Accredited analyses are marked in bold. Figures in brackets denote limits of quantification in mg/kg dry weight. Minimum sample amount: 1 g dry matter. Sample preparation required. Method: ICP-AES. |
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Digestion: Samples are dried at 50°C and dissolved in a mixture of nitric acid and hydrogen peroxide in sealed teflon containers in a microwave system. |
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MF-2 Metals in pulp and chips |
| As (0.08) |
Cd (0.005) |
Co (0.005) |
Cr (0.03) |
Cu (0.1) |
| Hg (0.01) |
Mn (0.04) |
Ni (0.04) |
Pb (0.04) |
Zn (0.2) |
| Figures in brackets denote limits of quantification in mg/kg dry weight. Minimum sample amount: 1 g dry matter. Sample preparation required. Method: ICP-AES/ICP-SFMS. |
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Digestion: Samples are dried at 50°C and dissolved in a mixture of nitric acid and hydrogen peroxide in sealed teflon containers in a microwave system.
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| Analytical package MF-2 is also appropriate for packaging materials. |
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MF-3 Metals in pulp and chips
after ashing; hydrochloric acid-soluble portion |
| Al (0.6) |
Ba (0.005) |
Ca (1) |
Co (0.05) |
Cr (0.05) |
| Cu (0.05) |
Fe (0.3) |
K (2) |
Mg (0.4) |
Mn (0.02) |
| Mo (0.05) |
Na (0.6) |
Ni (0.05) |
P (0.2) |
Ti (0.05) |
| V (0.05) |
Zn (0.02) |
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| Figures in brackets denote limits of quantification in mg/kg dry weight. Minimum sample amount: min 10 g dry matter. Sample preparation may be required. Method: ICP-AES. |
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Digestion (SCAN-CM 38 R-modified): Samples are incinerated in two stages at 250°C and 550°C, respectively. The ash is taken to dryness with HCl on a hotplate four times. The residue is dissolved in nitric acid. |
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MF-4 Metals in pulp and chips
after ashing and fusion |
| Al (8) |
Ba (0.1) |
Be (0.03) |
Ca (28) |
Co (0.3) |
| Cr (0.5) |
Cu (0.3) |
Fe (2) |
K (21) |
La (0.3) |
| Mg (6) |
Mn (1) |
Mo (0.3) |
Na (15) |
Nb (0.3) |
| Ni (0.5) |
P (1) |
Sc (0.05) |
Si (20) |
Sn (1) |
| Sr (0.05) |
Ti (1) |
V (0.1) |
W (2.5) |
Y (0.1) |
| Zn (0.5) |
Zr (0.1) |
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| Figures in brackets denote limits of quantification in mg/kg dry weight at ash content 5%. Minimum sample amount: 50 g dry matter.Sample preparation may be required. Method: ICP-AES. Delivery time: approximately 10-15 workdays. |
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Digestion: Samples are dried at 105°C, ashed at 550°C, fused with lithium metaborate at 1000°C and dissolved in dilute nitric acid. |
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MF-5 Metals in pulp and chips
after acid digestion/fusion
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| Al (8) |
As (0.08) |
Ba (0.1) |
Be (0.03) |
Ca (28) |
| Cd (0.005) |
Co (0.005) |
Cr (0.5) |
Cu (0.1) |
Fe (2) |
| Hg (0.01) |
K (21) |
La (0.3) |
Mg (6) |
Mn (1) |
| Mo (0.3) |
Na (15) |
Nb (0.3) |
Ni (0.04) |
P (1) |
| Pb (0.04) |
S (16) |
Sc (0.05) |
Si (20) |
Sn (1) |
| Ti (1) |
V (0.1) |
W (2.5) |
Y (0.1) |
Zn (0.2) |
| Zr (0.1) |
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| Figures in brackets denote limit of quantification in mg/kg dry weight at ash content 5%. Minimum sample amount: 50 g dry matter. Sample preparation may be required. Method: ICP-AES/ICP-SFMS. |
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Digestion (a combination of MF-2 and MF-4): Samples are dried at 50°C after which As, Cd, Co, Cu, Hg, Ni, Pb, S and Zn are digested with a mixture of nitric acid and hydrogen peroxide in sealed teflon containers in a microwave system and determined. Other elements are determined after ashing at 550°C, fusion with lithium metaborate and dissolution of the fusion residue in dilute nitric acid. Delivery time: approximately 10-15 workdays. |
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Sample preparation |
| Grinding (steel mill) |
| Grinding (rotary cutter, up to 2 l) |
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