Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Rates of particulate pollution deposition onto leaf surfaces: Temporal and inter-species magnetic analyses
AU - Mitchell, Ruth
AU - Maher, Barbara
AU - Kinnersley, Rob
PY - 2010/5
Y1 - 2010/5
N2 - Evaluation of health impacts arising from inhalation of pollutant particles <10 mm (PM10) is an active research area. However, lack of exposure data at high spatial resolution impedes identification of causal associations between exposure and illness. Biomagnetic monitoring of PM10 deposited on tree leaves may provide a means of obtaining exposure data at high spatial resolution. To calculate ambient PM10 concentrations from leaf magnetic values, the relationship between the magnetic signal and total PM10 mass must be quantified, and the exposure time (via magnetic deposition velocity (MVd) calculations) known. Birches display higher MVd (w5 cm1) than lime trees (w2 cm1). Leaf saturation remanence values reached ‘equilibrium’ with ambient PM10 concentrations after w6 ‘dry’ days(<3 mm/day rainfall). Other co-located species displayed within-species consistency in MVd; robust inter-calibration can thus be achieved, enabling magnetic PM10 biomonitoring at unprecedented spatial resolution.
AB - Evaluation of health impacts arising from inhalation of pollutant particles <10 mm (PM10) is an active research area. However, lack of exposure data at high spatial resolution impedes identification of causal associations between exposure and illness. Biomagnetic monitoring of PM10 deposited on tree leaves may provide a means of obtaining exposure data at high spatial resolution. To calculate ambient PM10 concentrations from leaf magnetic values, the relationship between the magnetic signal and total PM10 mass must be quantified, and the exposure time (via magnetic deposition velocity (MVd) calculations) known. Birches display higher MVd (w5 cm1) than lime trees (w2 cm1). Leaf saturation remanence values reached ‘equilibrium’ with ambient PM10 concentrations after w6 ‘dry’ days(<3 mm/day rainfall). Other co-located species displayed within-species consistency in MVd; robust inter-calibration can thus be achieved, enabling magnetic PM10 biomonitoring at unprecedented spatial resolution.
KW - Magnetic biomonitoring
KW - Deposition velocity
KW - PM10 monitoring
KW - Tree leaves
KW - Inter-species calibration
U2 - 10.1016/j.envpol.2009.12.029
DO - 10.1016/j.envpol.2009.12.029
M3 - Journal article
VL - 158
SP - 1472
EP - 1478
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
IS - 5
ER -