Modified analytical technique for the determination of trace organics in water using dynamic headspace and gas chromatography-mass spectrometry

Bianchi, Alexander P.; Varney, Mark S.; Phillips, John B.

doi:10.1016/s0021-9673(01)93956-1

Cited by 40 publications

(7 citation statements)

References 27 publications

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“…Alternatively, a train of single-sorbent tubes may be coupled together in a series. Examples of applications requiring multi-sorbent trapping media include total gasoline vapor monitoring, 21,23 seawater/sediment analysis, 28,29 and air toxic analysis. If more than one sorbent is used, the air must always be sampled through the tube in order of increasing sorbent strength.…”

Section: Sorbent Selectionmentioning

confidence: 99%

Monitoring VOCs in Air Using Sorbent Tubes Followed by Thermal Desorption-Capillary GC Analysis: Summary of Data and Practical Guidelines

Woolfenden

1997

Journal of the Air & Waste Management Association

180

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Section: Sorbent Selectionmentioning

confidence: 99%

Monitoring VOCs in Air Using Sorbent Tubes Followed by Thermal Desorption-Capillary GC Analysis: Summary of Data and Practical Guidelines

Woolfenden

1997

Journal of the Air & Waste Management Association

180

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“…Elastic bands were secured on the outside of the nylon sheet or bag to seal around the sample tube(s) projecting into the chamber and loosely around the plant stem. This reduced the amount of unpurified air entering the collection chamber and allowed lower flow rates of 180ml/min to be used for the collection of plant volatiles and thus minimized adsorbent breakthrough [9]. Air was pumped through 2 filters (one containing molecular sieve SA, the other activated charcoal) into the entrainment chambers at 50 ml/rnin in excess of that being drawn out and passed into two sample tubes, the first containing Tenax-TA (60-80 mesh), the second Haysep-Q (60-80 mesh) adsorbent.…”

Section: Sampling Of Volatilesmentioning

confidence: 99%

The identification of potential aeroallergen/irritant(s) from oilseed rape (Brassica napus spp. oleifera): volatile organic compounds emitted during flowering progression

Butcher¹,

Macfarlane‐Smith²,

Robertson³

et al. 1994

Clin Experimental Allergy

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Volatile organic compounds emitted by growing intact oilseed rape plants have been detected using an entrainment apparatus enabling volatile headspace analysis by thermal desorption coupled to capillary gas chromatography-mass spectrometry. In total, 22 volatile compounds were identified as being emitted during the flowering period. The main constituents were alpha-farnesene (a sesquiterpene); beta-myrcene (a monoterpene); linalool (a monoterpene alcohol) and the 'green leaf' volatile (E)-3-hexen-1-ol acetate. These compounds constituted between 50 and 87% (mean 68%) of the total volatiles emitted in all of the entrainments carried out with flowering oilseed rape plants. The remaining constituents consisted of a range of compounds including other terpenoids, the characteristic 'green leaf' volatile (E)-3-hexen-1-ol, short chain alcohols and ketones, organic sulphides and nitrogen-containing compounds. These were generally present as minor constituents but some plant entrainments revealed that higher relative amounts could be emitted. This was particularly apparent for dimethyl disulphide, 3-methyl-2-pentanone, 3-hydroxy-2-butanone, sabinene, isomyrcenol and (E)-3-hexen-1-ol. The possible role of the 22 compounds in respiratory mucosa and conjunctiva irritation associated with airborne releases from oilseed rape is discussed.

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“…A modified variant of the purge-and-trap gas chromatographic analysis can be used to detect 2,3-dimethylbutane in water (145). Headspace gas chromatographic techniques may also be used (27).…”

Section: Air/watermentioning

confidence: 99%

Aliphatic Hydrocarbons

Carreón¹,

Herrick²

2012

Patty's Toxicology

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Aliphatic hydrocarbons are open‐chain compounds that may be saturated or unsaturated. The saturated compounds, known as paraffin hydrocarbons or alkanes , include methane and its homologs having the empirical formula C n H 2 n +2 . The unsaturated compounds fall into a number of homologous series: ( 1 ) those containing one double bond (ethylene and its homologs) and having the formula C n H 2 n are known as olefins or alkenes ; ( 2 ) those containing one triple bond (acetylene and its homologs) are called acetylenes or alkynes and have the formula C n H 2 n −2 ; ( 3 ) those having two double bonds (allene, 1,3‐butadiene and 1,4‐pentadiene represent three types) are diolefins or alkadienes and also have the formula C n H 2 n −2 ; ( 4 ) those having a large number of double or triple bonds or both double and triple bonds are named in analogous fashion as alkatrienes , alkatetraenes , alkadiynes , alkenynes , and alkadienynes . Aliphatic hydrocarbons are asphyxiants and central nervous system ( CNS ) depressants. Serious toxic effects of aliphatic hydrocarbons include asphyxia and chemical pneumonitis for many paraffins, axonal neuropathy for n ‐hexane, and cancer for 1,3‐butadiene.

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Modified analytical technique for the determination of trace organics in water using dynamic headspace and gas chromatography-mass spectrometry

Cited by 40 publications

References 27 publications

Monitoring VOCs in Air Using Sorbent Tubes Followed by Thermal Desorption-Capillary GC Analysis: Summary of Data and Practical Guidelines

Monitoring VOCs in Air Using Sorbent Tubes Followed by Thermal Desorption-Capillary GC Analysis: Summary of Data and Practical Guidelines

The identification of potential aeroallergen/irritant(s) from oilseed rape (Brassica napus spp. oleifera): volatile organic compounds emitted during flowering progression

Aliphatic Hydrocarbons

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