Common carp sperm chromatin as an economical and effective remover for benzo()pyrene from pollutants.

Benzo (a) pyrene is a highly carcinogenic polycyclic aromatic compound, difficult to be degraded, widely present in the environment. However, there is currently no cost-effective and efficient method for removing benzo (a) pyrene. In this study, a feasible method was introduced to cheaply and efficiently adsorb benzo()pyrene using chromatin. Scanning electron microscopy analysis showed that the chromatin had a filamentary fiber structure. Fourier transform infrared (FTIR) spectroscopy showed that benzo()pyrene formed a bond with the chromatin. Effective binding was confirmed using fluorescence microscopy. Influence factors exploration experiments indicated that the amount of benzo()pyrene adsorbed by chromatin was 0.16 mg g. The adsorption process of BaP by chromatin is consistent with a pseudo-second-order kinetics model of adsorption. The adsorption isotherm model is consistent with the langmuir isotherm model.This study suggests that chromatin can be utilized as a ordinary and high efficiency adsorbent for removing benzo()pyrene and can be utilized in further studies.