TY - JOUR
T1 - Trichloroacetic acid in Norway spruce/soil-system I. Biodegradation in soil
AU - Matucha, M.
AU - Forczek, S. T.
AU - Gryndler, M.
AU - Uhlířová, H.
AU - Fuksová, K.
AU - Schröder, P.
N1 - Funding Information:
This work was supported by grants no. 522/99/1465 and 522/02/0874 of the Grant Agency of the Czech Republic. The support by the GSF-Institute of Soil Ecology, Neuherberg, Germany is gratefully acknowledged. We thank Dr. A. Riedel (ICEM Prague) for the radioactivity measurements of the soil samples. Part of the work was presented at the 2nd Intern. Conf. “Naturally Produced Organohalogens”, September 30–October 3, 2001, Heidelberg, Germany.
PY - 2003/1
Y1 - 2003/1
N2 - Trichloroacetic acid (TCA) as a phytotoxic substance affects health status of coniferous trees. It is known as a secondary air pollutant (formed by photooxidation of tetrachloroethene and 1,1,1-trichloroethane) and as a product of chlorination of humic substances in soil. Its break-down in soil, however, influences considerably the TCA level, i.e. the extent of TCA uptake by spruce roots. In connection with our investigations of TCA effects on Norway spruce, microbial processes in soil were studied using 14C-labeling. It was shown that TCA degradation in soil is a fast process depending on TCA concentration, soil properties, humidity and temperature. As a result, the TCA level in soil is determined by a steady state between uptake from the atmosphere, formation in soil, leaching and degradation. The process of TCA 0 degradation in soil thus participates significantly in the chlorine cycle in forest ecosystems.
AB - Trichloroacetic acid (TCA) as a phytotoxic substance affects health status of coniferous trees. It is known as a secondary air pollutant (formed by photooxidation of tetrachloroethene and 1,1,1-trichloroethane) and as a product of chlorination of humic substances in soil. Its break-down in soil, however, influences considerably the TCA level, i.e. the extent of TCA uptake by spruce roots. In connection with our investigations of TCA effects on Norway spruce, microbial processes in soil were studied using 14C-labeling. It was shown that TCA degradation in soil is a fast process depending on TCA concentration, soil properties, humidity and temperature. As a result, the TCA level in soil is determined by a steady state between uptake from the atmosphere, formation in soil, leaching and degradation. The process of TCA 0 degradation in soil thus participates significantly in the chlorine cycle in forest ecosystems.
KW - C-labeling
KW - Dichloroacetic acid
KW - Forest soil
KW - Microbial degradation
KW - Radio-indicator methods
KW - TCA uptake
KW - Trichloroacetic acid
UR - http://www.scopus.com/inward/record.url?scp=0037207642&partnerID=8YFLogxK
U2 - 10.1016/S0045-6535(02)00638-0
DO - 10.1016/S0045-6535(02)00638-0
M3 - Article
C2 - 12656249
AN - SCOPUS:0037207642
SN - 0045-6535
VL - 50
SP - 303
EP - 309
JO - Chemosphere
JF - Chemosphere
IS - 3
ER -