J 2013

Critical evaluation of a new passive exchange-meter for assessing multimedia fate of persistent organic pollutants at the air-soil interface

LIU, Xiang, Li-Li MING, Luca NIZZETTO, Katrine BORGA, Thorjorn LARSSEN et. al.

Basic information

Original name

Critical evaluation of a new passive exchange-meter for assessing multimedia fate of persistent organic pollutants at the air-soil interface

Authors

LIU, Xiang (156 China), Li-Li MING (156 China), Luca NIZZETTO (380 Italy, guarantor, belonging to the institution), Katrine BORGA (578 Norway), Thorjorn LARSSEN (578 Norway), Qian ZHENG (156 China), Jun LI (156 China) and Gan ZHANG (156 China)

Edition

Environmental Pollution, OXFORD, OXON, ENGLAND, ELSEVIER SCI LTD, 2013, 0269-7491

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10511 Environmental sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 3.902

RIV identification code

RIV/00216224:14310/13:00071499

Organization unit

Faculty of Science

UT WoS

000323807900020

Keywords in English

POPs; Air; Soil; Flux; Semivolatile organic compounds; Fate

Tags

Tags

International impact, Reviewed
Změněno: 2/4/2014 16:09, Ing. Andrea Mikešková

Abstract

V originále

A new passive exchange meter (PEM) to measure inter-compartment fluxes of persistent organic pollutants (POPS) at the interface between soil and the atmosphere is described. The PEM uses labeled reference compounds (RC) added in-situ to vegetation litter deployed in open cylinders designed to trap the vertical downward export of the RCS while allowing free exchange of POPs between litter and air. Fluxes of native compounds (bulk deposition, volatilization and downward export) are quantitatively tracked. One scope of the PEM is to investigate the influence of biogeochemical controls on contaminant re-mobilization. The PEM performance was tested in a subtropical forest by comparing measurements under dense canopy and in a canopy gap; conditions in which deposition and turn-over of organic matter (OM) occur at different rates. Significant differences in fate processes were successfully detected. Surprisingly, mobilization by leaching of more hydrophobic compounds was higher under canopy, possibly as a result of canopy mediated enhancement of OM degradation.

Links

ED0001/01/01, research and development project
Name: CETOCOEN