Junge Relationships in Measurement Data for Cyclic Siloxanes in Air

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Junge Relationships in Measurement Data for Cyclic Siloxanes in Air. / MacLeod, Matthew; Kierkegaard, Amelie; Genualdi, Susie et al.
In: Chemosphere, Vol. 93, No. 5, 01.10.2013, p. 830-834.

Research output: Journal contributionsJournal articlesResearchpeer-review

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MacLeod M, Kierkegaard A, Genualdi S, Harner T, Scheringer M. Junge Relationships in Measurement Data for Cyclic Siloxanes in Air. Chemosphere. 2013 Oct 1;93(5):830-834. doi: 10.1016/j.chemosphere.2012.10.055

Bibtex

@article{36d0670efe1743fa9c0496054fcdc8bc,
title = "Junge Relationships in Measurement Data for Cyclic Siloxanes in Air",
abstract = "In 1974, Junge postulated a relationship between variability of concentrations of gases in air at remote locations and their atmospheric residence time, and this Junge relationship has subsequently been observed empirically for a range of trace gases. Here, we analyze two previously-published datasets of concentrations of cyclic volatile methyl siloxanes (cVMS) in air and find Junge relationships in both. The first dataset is a time series of concentrations of decamethylcyclopentasiloxane (D5) measured between January and June, 2009 at a rural site in southern Sweden that shows a Junge relationship in the temporal variability of the measurements. The second dataset consists of measurements of hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4) and D5 made simultaneously at 12 sites in the Global Atmospheric Passive Sampling (GAPS) network that shows a Junge relationship in the spatial variability of the three cVMS congeners. We use the Junge relationship for the GAPS dataset to estimate atmospheric lifetimes of dodecamethylcyclohexasiloxane (D6), 8:2–fluorotelomer alcohol and trichlorinated biphenyls that are within a factor of 3 of estimates based on degradation rate constants for reaction with hydroxyl radical determined in laboratory studies.",
keywords = "Chemistry, D3, D4, D5, D6, FTOh, Lifetime",
author = "Matthew MacLeod and Amelie Kierkegaard and Susie Genualdi and Tom Harner and Martin Scheringer",
note = "Funding Information: This research has received funding from the Swedish Research Council (VR B0392101).",
year = "2013",
month = oct,
day = "1",
doi = "10.1016/j.chemosphere.2012.10.055",
language = "English",
volume = "93",
pages = "830--834",
journal = "Chemosphere",
issn = "0045-6535",
publisher = "Pergamon Press",
number = "5",

}

RIS

TY - JOUR

T1 - Junge Relationships in Measurement Data for Cyclic Siloxanes in Air

AU - MacLeod, Matthew

AU - Kierkegaard, Amelie

AU - Genualdi, Susie

AU - Harner, Tom

AU - Scheringer, Martin

N1 - Funding Information: This research has received funding from the Swedish Research Council (VR B0392101).

PY - 2013/10/1

Y1 - 2013/10/1

N2 - In 1974, Junge postulated a relationship between variability of concentrations of gases in air at remote locations and their atmospheric residence time, and this Junge relationship has subsequently been observed empirically for a range of trace gases. Here, we analyze two previously-published datasets of concentrations of cyclic volatile methyl siloxanes (cVMS) in air and find Junge relationships in both. The first dataset is a time series of concentrations of decamethylcyclopentasiloxane (D5) measured between January and June, 2009 at a rural site in southern Sweden that shows a Junge relationship in the temporal variability of the measurements. The second dataset consists of measurements of hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4) and D5 made simultaneously at 12 sites in the Global Atmospheric Passive Sampling (GAPS) network that shows a Junge relationship in the spatial variability of the three cVMS congeners. We use the Junge relationship for the GAPS dataset to estimate atmospheric lifetimes of dodecamethylcyclohexasiloxane (D6), 8:2–fluorotelomer alcohol and trichlorinated biphenyls that are within a factor of 3 of estimates based on degradation rate constants for reaction with hydroxyl radical determined in laboratory studies.

AB - In 1974, Junge postulated a relationship between variability of concentrations of gases in air at remote locations and their atmospheric residence time, and this Junge relationship has subsequently been observed empirically for a range of trace gases. Here, we analyze two previously-published datasets of concentrations of cyclic volatile methyl siloxanes (cVMS) in air and find Junge relationships in both. The first dataset is a time series of concentrations of decamethylcyclopentasiloxane (D5) measured between January and June, 2009 at a rural site in southern Sweden that shows a Junge relationship in the temporal variability of the measurements. The second dataset consists of measurements of hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4) and D5 made simultaneously at 12 sites in the Global Atmospheric Passive Sampling (GAPS) network that shows a Junge relationship in the spatial variability of the three cVMS congeners. We use the Junge relationship for the GAPS dataset to estimate atmospheric lifetimes of dodecamethylcyclohexasiloxane (D6), 8:2–fluorotelomer alcohol and trichlorinated biphenyls that are within a factor of 3 of estimates based on degradation rate constants for reaction with hydroxyl radical determined in laboratory studies.

KW - Chemistry

KW - D3

KW - D4

KW - D5

KW - D6

KW - FTOh

KW - Lifetime

UR - http://www.scopus.com/inward/record.url?scp=84884417168&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/10d6d74a-11dd-3c18-9cc6-f9dd375714cb/

U2 - 10.1016/j.chemosphere.2012.10.055

DO - 10.1016/j.chemosphere.2012.10.055

M3 - Journal articles

C2 - 23177712

VL - 93

SP - 830

EP - 834

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

IS - 5

ER -