A simple gas chromatography method for the analysis of monoethanolamine in air

Abstract

A simple method determining airborne monoethanolamine has been developed. Monoethanolamine determination has traditionally been difficult due to analytical separation problems. Even in recent sophisticated methods, this difficulty remains as the major issue often resulting in time-consuming sample preparations. Impregnated glass fiber filters were used for sampling. Desorption of monoethanolamine was followed by capillary GC analysis and nitrogen phosphorous selective detection. Separation was achieved using a specific column for monoethanolamines (35% diphenyl and 65% dimethyl polysiloxane). The internal standard was quinoline. Derivatization steps were not needed. The calibration range was 0.5-80 μg/mL with a good correlation (R(2) = 0.996). Averaged overall precisions and accuracies were 4.8% and -7.8% for intraday (n = 30), and 10.5% and -5.9% for interday (n = 72). Mean recovery from spiked filters was 92.8% for the intraday variation, and 94.1% for the interday variation. Monoethanolamine on stored spiked filters was stable for at least 4 weeks at 5°C. This newly developed method was used among professional cleaners and air concentrations (n = 4) were 0.42 and 0.17 mg/m(3) for personal and 0.23 and 0.43 mg/m(3) for stationary measurements. The monoethanolamine air concentration method described here was simple, sensitive, and convenient both in terms of sampling and analytical analysis.

Simultaneous Derivatization and Extraction of Volatile Amines with Fiber-Packed Needle and Subsequent Analysis in Gas Chromatography

“…An improvement in the peak shape of amines in the subsequent GC analysis can be also expected after the derivatization reaction with cyclohexanone. Compared to other techniques reported earlier [4,5], the developed method showed a good sensitivity to gaseous MEA, suggesting a future possibility to real air samples analysis.…”

“…In this work, a fiber-packed sample preparation needle with cyclohexanone, as the derivatization reagent, for simultaneous derivatization/extraction of MEA in air samples, has been developed for the GC analysis. This method only requires very short processing time compared other conventional techniques [4][5][6][7][8][9].…”

“…The industrial hazards associated with the production and handling of MEA are skin and eye irritation [1,2]. The U.S. National Institute of Occupational Safety and Health (NIOSH) has adopted an exposure limit of 7.5 mg/m 3 (7.5 ng/mL, 3 ppm) for MEA as time-weighted average values [3], and several analytical methods have been reported for the determination of MEA in air samples [4][5][6][7][8][9][10].…”

Unraveling the Novel Bacterial Assisted Biodegradation Pathway of Morpholine

“…A GC system (Shimadzu GC-2010) equipped with a standard oven for temperature ramping, split condition, injection ports, a flame ionization detector and a Rtx-35 amine column (30 mm × 0.32 mm × 1µm film thickness) in the presence of nitrogen as a carrier gas by the direct injection method was used for the analysis of monoethanolamine (MEA). The analytical parameters for the analysis of MEA are summarized in Table 1, as per the method (by modifying the column and its parameters) reported in the literature [21]. A standard solution of 0.125 to 0.5% v/v MEA (corresponding to ppm and prepared in methanol) was injected along with the processed culture supernatant (1:10, filtrate volume of 1 and 9 volumes of methanol), as per the method described above.…”

Airborne Exposures to Monoethanolamine, Glycol Ethers, and Benzyl Alcohol During Professional Cleaning: A Pilot Study

“…The limits of detection (LOD) were 0.5 μg sample −1 for 2PG1BE, EGBE, DEGEE, DEGBE, EGPhE, BA and 1 μg sample −1 for DPGME. Collection and analysis of MEA has been described previously (Gerster et al, 2012). Briefly, impregnated (H 2 SO 4 ) glass fiber filters inserted in the filter holder and attached to an air sampling pump (Air Check XR5000; SKC Inc.) operating at 1 l min −1 was used for collecting airborne MEA.…”