By Antonius Kettrup
This can be the 5th quantity in a global sequence of analytical equipment for the decision of toxicants within the air on the office. All equipment are trustworthy, reproducable and meet the necessities for quality controls. The research of the degrees of dangerous elements 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 staff from the adversarial results of such ingredients.
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Additional info for Analyses of Hazardous Substances in Air, Volume 5
Selectivity: The procedure is highly selective due to the combination of gas chromatographic separation and mass-selective detection. In practice the use of the given analytical column and the ion mass m/z 79 for detection of BCME has proved reliable [1, 3]. Advantages: Highly selective with a low quantification limit. Disadvantages: Concentration peaks not recorded, sophisticated equipment needed. Apparatus: Pump, gas meter or flow meter, adsorption tubes for automatic thermal desorption, combined automatic thermal desorber (ATD), gas chromatograph (GC) with capillary column and ion trap detector (ITD).
100 mg of a,a-dichlorotoluene is dissolved in carbon disulfide in a 10 mL volumetric flask and the flask is filled to the mark with carbon disulfide. 05 mg/mL a,a-dichlorotoluene in carbon disulfide. 50 µL of a,a-dichlorotoluene stock solution I is pipetted into a 10 mL volumetric flask and the flask is filled to the mark with carbon disulfide. 5 µg/mL a,a-dichlorotoluene in carbon disulfide. Volumes of 100, 200 and 300 µL of a,a-dichlorotoluene stock solution II are transferred to three different 10 mL volumetric flasks.
1 Sample preparation and analysis The contents of the loaded activated carbon tube are transferred to a 2 mL sample vial and desorbed with 1 mL of carbon disulfide (desorption solution). After desorption of the activated carbon with carbon disulfide, the solution must immediately be analysed by gas chromatography, as the solution is instable. To ensure that the carbon disulfide and the activated carbon do not contain any impurities, the filling of an unloaded activated carbon tube is desorbed with 1 mL of carbon disulfide (blank solution).
Analyses of Hazardous Substances in Air, Volume 5 by Antonius Kettrup