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Simultaneous determination of α-methyl styrene and cumene in the ultraviolet region

Bestimmung von α-Methylstyrol und Cumol nebeneinander im UV-Bereich

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Summary

A new analytical method for the determination of α-methyl styrene and cumene in one operation is based on the measurement of the absorbance of the sample in the ultraviolet region at 268 and 241 nm. The concentration of both substances is obtained from a calibration diagram. The analysis is carried out in n-heptane solution. Silicagel is applied for sampling of atmosphere. Errors amount to ± 3% in the concentration, ranges 1–10 μg/l (α-methyl styrene) and 100–500 μg/l (cumene), respectively. With lower concentrations the errors increase considerably.

Zusammenfassung

Die Absorption der Probe wird bei 268 und 241 nm gemessen und die Konzentration beider Substanzen einem Eichdiagramm entnommen. Die Messung wird in n-Heptan durchgeführt. Zur Probenahme aus Luft dient die Absorption an Silicagel. Die Fehler liegen bei ± 3% für Konzentrationen von 1–10 μg/l (α-Methylstyrol) bzw. 100–500 μg/l (Cumol). Bei geringeren Konzentrationen nehmen die Fehler erheblich zu.

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Authors and Affiliations

  1. Research Institute of Industrial Hygiene and Occupational Medicine, Bratislava, ČSSR

    K. Bencze

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  1. K. Bencze
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Bencze, K. Simultaneous determination of α-methyl styrene and cumene in the ultraviolet region. Z. Anal. Chem. 246, 244–247 (1969). https://doi.org/10.1007/BF00454557

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  • DOI: https://doi.org/10.1007/BF00454557

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