^pFaculty,;
Federacao,;
Federal;
University;
of;
Bahia;
(UFBA),;
Salvador,;
Bahia;
40210-630,;
Brazil;
^pof;
Soil;
Sciences,;
University;
of;
A;
Coruna;
(UDC),;
Coruna;
15071,;
Spain;
有机氯化合物; 表层沉积物; 弗朗西斯; 农药测定; 巴西; 中上游; 有机氯农药; 六氯环己烷;