Addition of organic moiety attecting the fates of high water solubility organic contaminants in soil
碩士 === 國立中央大學 === 環境工程研究所 === 82 === the fates of carbanates and diuron were studied in a nona- cclimated sandy loam soil spiked with various organic compoun- ds. The results showed that aerobic biodegradation of pestici- des residues by in...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1994
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| Online Access: | http://ndltd.ncl.edu.tw/handle/32165009407905059042 |
| Summary: | 碩士 === 國立中央大學 === 環境工程研究所 === 82 === the fates of carbanates and diuron were studied in a nona-
cclimated sandy loam soil spiked with various organic compoun-
ds. The results showed that aerobic biodegradation of pestici-
des residues by indigenous microbes in soil was related to the
chemical structure of the contaminants. In the experiment of
migratibility in soil,the result demonstrated that the additi-
on of xenobiotic organic compounds could enhance the persiste-
nce of high water soluable organic contaminants in soil. The
increase of xenobiotic organic compounds resulted in the incr-
easing of the persistence of pesticides in aoil. The mechanism
of bonding carbamate in saturated soil was elucidated from its
behavior of partitioning which has reference to the water sol-
ubility of the organic contaminants. The magnitude of permeab-
ility from soil is releated to and govenered by the degree of
water solubility of pesticides. Most of carbamates were eluted
from the column of sandy loam soil wuth in 10 days.On the oth-
er , the phenolic compounds added occurred oxidative-coulping
reaction with SOMs and apparently remained carbamates and diu-
ron in soil that resulted is decrease of migratibility of the-
se contaminants.
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