By Antonius Kettrup
This is often the 5th quantity in a world sequence of analytical equipment for the choice of toxicants within the air on the place of work. All equipment are trustworthy, reproducable and meet the necessities for qc. The research of the degrees of damaging components within the air inhaled through staff within the chemical and related operating environments is important to watch adherence to statutory focus limits and to guard the employees from the antagonistic results of such elements.
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Extra info for Analyses of Hazardous Substances in Air, Volume 5
G. from Merck, 64271 Darmstadt) For HPLC: Ultra pure water (e. g. prepared with the Nanopure II (UHQ water)) Acetonitrile, LiChrosolv (e. g. 3 Solutions Desorption solution: Mixture of 92 parts by volume of acetonitrile and 8 parts by volume of aqueous ammonia. Solvent mixture 1: Mixture of acetonitrile/water (1 : 1 v/v). Solvent mixture 2: Mixture of 96 parts by volume of solvent mixture 1 and 8 parts by volume of aqueous ammonia. Stock solution: Solution of about 1 mg of 1,5-diaminonaphthalene per millilitre solvent mixture 2.
47: 821±824. /England (1988) Atmospheric Monitoring of Bischloromethylether at low ppb Levelsº. Gas Chromatography Applications, Number 25. Analytical Methods Appendix: Chromatograms and Spectra 38 Analyses of Hazardous Substances in Air,Volume 5. DFG, Deutsche Forschungsgemeinschaft Copyright # 2002 Wiley-VCH Verlag GmbH ISBNs: 3-527-27046-9 (Hardcover); 3-527-60019-1 (Electronic) 39 a-chlorotoluene Federation of the Employment Accidents Insurance Institutions of Germany (Hauptverband der Berufsgenossenschaften) Centre for Accident Prevention and Occupational Medicine Alte Heerstraße 111, 53757 Sankt Augustin Expert Committee Chemistry Carcinogenic substances Established methods Order number : BGI 505-59E Issue: December 1996 Method for the determination of a-chlorotoluene Method tested and recommended by the Berufsgenossenschaften for the determination of a-chlorotoluene (benzyl chloride) in working areas after discontinuous sampling: For the assessment of working areas, both personal and stationary sampling are possible: 1 Sampling with a pump and adsorption on Tenax, gas chromatography after desorption.
The volumetric flasks are filled to the mark with n-hexane. With these solutions and an air sample volume of 48 L and 1 mL of desorption solution a concentration range of 21 µg/m3 to 21 mg/m3 a-chlorotoluene in air is covered. 2 Sampling The flow rate of the pump is set to a maximum of 100 mL/min. With sampling for 8 hours this corresponds to a maximum air sample volume of 48 L. A Tenax tube is opened and connected to the pump. During working hours the pump and tube are worn by a person or used in a stationary position.