Visitor Exposure and Risk Assessment of Insecticide Fenitrothion Applied to Tree in Public Living Space
2018
Kwon, G.H., Gyeonggi-do Forestry Environment Research Center, Osan, Republic of Korea | Moon, J.K., Hankyong National Unversity, Anseong, Republic of Korea | Jung, Y.M., Gyeonggi-do Forestry Environment Research Center, Osan, Republic of Korea | Lee, M.S., Gyeonggi-do Forestry Environment Research Center, Osan, Republic of Korea | Lee, J.H., Gyeonggi-do Forestry Environment Research Center, Osan, Republic of Korea | Lee, G.S., Gyeonggi-do Forestry Environment Research Center, Osan, Republic of Korea | Kwon, Y.D., Gyeonggi-do Forestry Environment Research Center, Osan, Republic of Korea
Pesticides are widely sprayed by the growers in street trees and planting areas which include urban forests, community forests and city parks to control pests. Spraying pesticides not only affect the people who sprayed but also affect the unspecified citizens who's are exposed to pesticides sprayed trees by contact or inhalation. A few studies have been conducted to measure the amount of pesticides in forest area but no studies have been conducted to measure the pesticide amount in tree in public living space. So, in our study, we investigated the amount of pesticides in cotton gloves, in leaf residue, and respiratory exposure for a certain period of time after applying Fenitrothion EC to Korean boxweed tree (Buxus Koreana) to know the safety time of pesticides after spraying. We found that, up to 4d, there was no significant difference of the amount of Fenitrothion on leaves. But the amount of pesticides on gloves was significantly higher on 1h (510.1 μg) and 24h (405.4 μg) than 48h (45.0 μg) after spraying. The amount of pesticides on inhalation was also significantly higher in 1 h (0.2 μg) and 24 h (0.1 μg) than 48 h after spraying. After 48h, we did not find pesticides amount in inhalation. Thus, we was considered necessary to pay attention to 48h after spraying of pesticide Fenitrothion.
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