Detection of amphetamine in air by solid adsorbent preconcentration and gas chromatographic analysis

Lawrence, A. H.; Elias, L.

doi:10.1021/ac00284a073

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…A series of filters arranged in order of decreasing pore size has been used to achieve size discrimination (4). Charcoal (6)(7)(8)(9)(10)(11)(12), diatomaceous earth (13), and commercial adsorbents such as XAD's (14)(15)(16)(17) and Tenax (4,(17)(18)(19)(20)(21)(22) are popular collection tube packings for preconcentration of atmospheric organics. The newest additions to the list of packings are metal chelates that selectively preconcentrate polar organics (23).…”

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Carbon hollow tubes as collectors in thermal desorption/gas chromatographic analysis of atmospheric organic compounds

Cobb¹,

Braman²,

Hua³

1986

Anal. Chem.

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Carbon hollow tubes are Introduced as preconcentrators for atmospheric organic compounds. The technique has a demonstrated range of applicability for stable compounds having boiling points between 90 and 235 °C. Studies Indicate a linear response from 3 to 770 ng/sample. The collector's capacity was found to range from 0.4 to 2.6 µ depending on the compound being adsorbed. The method has been used to determine diffusion coefficients of organic air analytes and to record organic component patterns.

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“…Many recoveries from filters and packed collectors require lengthy extractions before chromatographic analysis (9,11,17,21). Thermal desorption has been presented as an effective means of sample introduction for GC analysis (17,18 21,22,26). Analyte decomposition has been observed during adsorption / thermal desorption on Tenax.…”

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confidence: 99%