Platin – Bestimmung von Platin in der Luft am Arbeitsplatz mittels Atomabsorptionsspektrometrie (AAS)
| Autor: | Woznica, Anita, Hebisch, Ralph, Möller, Petra, Pitzke, Katrin, Hartwig, Andrea, MAK Commission |
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| Jazyk: | němčina |
| Rok vydání: | 2022 |
| Předmět: |
sampling
measurement range Atomabsorptionsspektrometrie Messbereich quartz fibre filter Platin Edelmetall Luftanalysen recovery hazardous substance graphite furnace Wiederfindung Mikrowellendruckaufschluss platinum atomic absorption spectrometry Arbeitsplatzmessung air analyses GF-AAS Graphitrohr Probenahme Quarzfaserfilter Pt Präzision workplace measurement analytical method GSP-Probenahmekopf Gefahrstoff AAS high-pressure microwave digestion system Bestimmungsgrenze precious metal Analysenmethode external calibration atomic absorption spectroscopy GSP sampling head precision Externe Kalibrierung limit of quantification |
| DOI: | 10.34865/am744006d7_2or |
| Popis: | The analytical method described here permits the determination of platinum in the inhalable particle fraction in workplace air in a concentration range of one tenth up to twice the currently valid Occupational Exposure Limit Value (OELV) in Germany of 1 mg/m3 in the inhalable particle fraction.Sampling is performed by drawing a defined volume of air through a quartz fibre filter using a suitable pump and sampling head. The flow rate is set to 10 l/min at a sampling period of 2 h. The platinum particles deposited on the filter are determined by a graphite furnace atomic absorption spectrometer (GF-AAS) after acid digestion using a high-pressure microwave digestion system. Quantitative evaluation is based on an external multiple-point calibration. The limit of quantification is 15 µg/l and 30 µg/m³ for a sampling volume of 1200 l and a sampling period of 2 h. The mean recovery is 95% and the expanded uncertainty for the validation range of 0.1 to 2 mg/m3 is 25–29% for the inhalable particle fraction. |
| Databáze: | OpenAIRE |
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