(in German)

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%.

Please download the article "MAK Commission: 2-Isopropoxyethanol - Determination of 2-isopropoxyethanol in workplace air using gas chromatography (GC-FID)" (in German only).