Abstract:
:The dissipation behavior of octachlorodipropyl ether (OCDPE) residues in fresh tea shoots and in tea prepared under field conditions was investigated, and the transfer of residues from brewed tea to tea infusion was determined. OCDPE levels in tea shoots, prepared tea, tea infusion, and spent tea leaves were determined using a sensitive and simple method. The dissipation of OCDPE is fairly slow in tea shoots and prepared tea, with half-life values of 5.10 and 5.46 days, respectively. The degradation rates of OCDPE residues in tea processing were 23.9-43.1 %. The terminal residues of OCDPE in tea shoots and prepared tea samples after 20 and 30 days of OCDPE application were higher than 0.01 mg/kg. However, OCDPE's transfer rates from brewed tea to tea infusion were only 6.0-14.8 %. Further studies on risk assessment of OCDPE residue in tea on the basis of the relationship of OCDPE in prepared tea and infusion are warranted.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Liao M,Shi Y,Cao H,Hua R,Tang F,Wu X,Tang Jdoi
10.1007/s10661-016-5573-zsubject
Has Abstractpub_date
2015-10-01 00:00:00pages
551issue
10eissn
0167-6369issn
1573-2959pii
10.1007/s10661-016-5573-zjournal_volume
188pub_type
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