Development of a novel concept for fate monitoring of biocides in liquid manure and manured soil taking 14C-imazalil as an example

Furthermore, test manures with 7-d aged 14C-imazalil residues were applied to study aerobic transformation and sorption in manured soil. Both concentration determining processes in soil were affected by the manure matrices. Comparing disappearance times (DT50) and sorption coefficients (KOC) after standard application (DT50: 83 d; KOC: 4059 L kg−1), 14C-imazalil disappeared more rapidly after test manure application. DT50 values were 29 or 48 d depending on whether bovine or pig test manure was applied. Mobility was slightly enhanced revealed by KOC of 1852 and 1385 L kg−1, respectively.