Abstract：
:The effects of various factors on fungicide triphenyltin acetate dissipation in selected soil types were studied; temperature is clearly the most important factor of these. Residues of this fungicide in Fangtzupo clay loam and Lanyang loam incubated at 30 degrees C for 32 days (water content 100, 70, or 40% of field capacity) were 25% of the original amounts. In soil samples incubated at 10, 30, or 40 degrees C with 100% field capacity water content, residues were 80, 26, and 5.5% for Fangtzupo soil, respectively, and 83, 26, and 7.0% for Lanyang soil, respectively. No significant difference in dissipation rate was found between sterilized and unsterilized soil, suggesting that microbial degradation is not an important factor in this process. Rapid degradation rates were observed-half-lives of 8.3 to 19.4 days in Fangtzupo clay loam and 8.0 to 16.3 days in Lanyang loam at temperatures ranging from 30 to 40 degrees C (soil water content of 100, 70, and 40% of field capacity). Significant increases in half-life (approximately 150 days) occurred at lower temperatures (10 degrees C) in both soil types. The potential of triphenyltin acetate to contaminate groundwater was tested using the behavior assessment and groundwater pollution-potential models. Results indicate that the leaching rate of the fungicide is very slow (1.0 cm day(-1)) under normal conditions.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Yen JH,Tsai CC,Su CC,Wang YSdoi
10.1006/eesa.2001.2053keywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
164-70issue
2eissn
0147-6513issn
1090-2414pii
S0147-6513(01)92053-6journal_volume
49pub_type
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