2023/06/29 by Karmann, Jörg, Hebisch, Ralph, Schmitt, Ralf +3
#2-(1-Methylethoxy)-ethanol #2-(1-Methylethoxy)ethanol #2-(Isopropyloxy)ethanol #2-Isopropoxyethanol #2-Isopropyloxyethanol #2-Propan-2-yloxyethanol #Analysenmethode #Arbeitsplatzmessung #Bestimmungsgrenze #Chromosorb 106 #EGiPE #Ethylene glycol monoisopropyl ether #Ethylenglykolisopropylether #Ethylenglykolmonoisopropylether #GC-FID #Gaschromatographie mit Flammenionisationsdetektion #Gefahrstoff #ISTD #Interner Standard #Isopropyl glycol #Isopropylglykol #Kalibriergasstrecke #Luft #Luftanalysen #Messbereich #Probenahme #Präzision #Prüfgas #Prüfgasstrecke #Thermodesorption #Wiederfindung #air #air analyses #analytical method #calibration gas line #gas chromatography with flame ionisation detection #gaschromatography #hazardous substance #internal standard #limit of quantification #measurement range #precision #recovery #sampling #test gas #test gas line #thermal desorption #workplace measurement
paper · doi:10.34865/am10959e8_2or
This analytical method is a validated measurement procedure for the determination of 2-isopropoxyethanol [109-59-1] in workplace air in a concentration range of one tenth up to twice the currently valid occupational exposure limit value (OELV) in Germany of 44 mg/m3. For sampling a defined volume of air is drawn through a sorbent tube (for thermal desorption) filled with Chromosorb 106. The flow rate is set to 5 ml/min and sampling is performed over 2 hours (which corresponds to a sampling volume of 600 ml). The samples to which cyclooctane is added as internal standard are thermally desorbed. The quantitative determination is based on a calibration function, whereby the 2-isopropoxyethanol concentration of the calibration standard is plotted against the intensities, calculated over the internal cyclooctane standard. The limit of quantification is 4.48 mg/m3 based on an air sample volume of 600 ml. The mean recovery is 92% and the expanded uncertainty for the validation range of 4.62 to 83.08 mg/m3 is 28.4%.