Sorption Behavior of nonylphenol in terrestrial soils

作者：During RA^*; Krahe S; Gath S

来源：Environmental Science & Technology, 2002, 36(19): 4052-4057.

DOI：10.1021/es0103389

Nonylphenol (NP) as an intermediate from anaerobic degradation of widely used nonionic surfactants occurs widespread in the environment. Partition behavior of this toxic and endocrine-disrupting chemical between soil and water was not examined until yet. The objective of this investigation was to quantify sorption and desorption behavior of 4-nonyl[C-14] phenol in a set of 51 soils using the batch equilibrium approach. Kinetic studies indicated apparent equilibrium within 20 h. Sorption was influenced by sorbate structure as could be shown with branched 4-nonyl[C-14]phenol and the linear 4-n-NP, respectively. Linear 4-n-NP behaves differently from the branched isomers of 4-NP. Sorption of 4-nonyl [C-14] phenoltested with five different initial concentrations resulted in linearly fitted isotherms that provided calculation of sorption partition coefficients (K-P). Desorption partition coefficients (KP-des) revealed hysteresis independent of soil properties but decreasing with decreasing initial NP concentrations. K-P values were correlated with organic carbon content of the soils yielding a log K-0C of 3.97.

• 出版日期2002-10-1