New data on the mobility of Pt emitted from catalytic converters
The mobility and speciation of Pt was investigated in dust deposited in highway tunnels and in gully sediments. For this, a sequential extraction technique was used in combination with a microwave digestion procedure, followed by detection of Pt with high resolution ICP-MS. A digestion procedure usi...
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| Veröffentlicht in: | Analytical and bioanalytical chemistry 2004-05, Vol.379 (1), p.131-136 |
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| container_title | Analytical and bioanalytical chemistry |
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| creator | Fliegel, Daniel Berner, Zsolt Eckhardt, Detlef Stüben, Doris |
| description | The mobility and speciation of Pt was investigated in dust deposited in highway tunnels and in gully sediments. For this, a sequential extraction technique was used in combination with a microwave digestion procedure, followed by detection of Pt with high resolution ICP-MS. A digestion procedure using HNO₃/HCl/H₂O₂ was developed and its efficiency tested for environmental materials. Total Pt contents ranged from approximately 100 to 300 μg/kg. The high share of chemically mobile Pt in the tunnel dust (up to about 40%) indicates that Pt is predominantly emitted in a mobile form from the converter. The absence of a mobile fraction in the gully sediment is explained by the elution of Pt by run-off. Except for the mobile and easily mobilised fractions none of the other fractions of the sequential extraction contains Pt, neither in the dust samples nor in the gully sediment. |
| doi_str_mv | 10.1007/s00216-004-2556-7 |
| format | Article |
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For this, a sequential extraction technique was used in combination with a microwave digestion procedure, followed by detection of Pt with high resolution ICP-MS. A digestion procedure using HNO₃/HCl/H₂O₂ was developed and its efficiency tested for environmental materials. Total Pt contents ranged from approximately 100 to 300 μg/kg. The high share of chemically mobile Pt in the tunnel dust (up to about 40%) indicates that Pt is predominantly emitted in a mobile form from the converter. The absence of a mobile fraction in the gully sediment is explained by the elution of Pt by run-off. 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| ispartof | Analytical and bioanalytical chemistry, 2004-05, Vol.379 (1), p.131-136 |
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| language | eng |
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| source | MEDLINE; SpringerNature Journals |
| subjects | Dust - analysis Environmental Pollutants - analysis Hydrochloric Acid Hydrogen Peroxide microwave treatment Nitric Acid platinum Platinum - analysis Reproducibility of Results runoff sediments Soil Pollutants - analysis Spectrophotometry, Atomic - methods Vehicle Emissions - analysis |
| title | New data on the mobility of Pt emitted from catalytic converters |
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