The persistence of microplastics (MPs) in the environment is seen as a global hazard. Typically, polycyclic aromatic hydrocarbons (PAHs) and MPs are classified into two separate pollutant groups and the relationships between the two stressors are poorly understood. Wheat is the most important grain in the human food chain. Thus, investigating adsorption and desorption capacity of polyethylene terephthalate (PET), when exposed to PAHs in irrigation water and wheat rhizosphere zone is very important. Adsorption experiments based on Langmuir or Freundlich models were performed to specify the adsorption capacity of PET particles for Naphthalene and Phenanthrene. Besides, desorption experiments were conducted to determine whether MPs in the rhizosphere zone could release previously sorbed Naphthalene and Phenanthrene. For desorption experiments, three scenarios were considered according to different environmental stresses. The results show that, when PET particles were exposed to Naphthalene (18 $\mathrm{\mu }$g/l) and Phenanthrene (0.11 $\mathrm{\mu }$g/l), they adsorbed 17.44 and 0.03 $\mathrm{\mu }$g/l of Naphthalene and Phenanthrene, respectively. PET particles also desorbed the same concentration in all three scenarios (root exudates) for Naphthalene (on average 3.775 $\mathrm{\mu }$g/l) and Phenanthrene (on average 0.00875 $\mathrm{\mu }$g/l). This indicates that the change in root exudates content does not affect the desorption capacity of PET for PAHs contaminants. Generally, the results of this study, suggest that PET particles absorbed 96.89% of Naphthalene and 27.27% of Phenanthrene and desorbed 21.65% of adsorbed Naphthalene and 29.17% of adsorbed Phenanthrene in the root exudate. The results show that PET particles can act as a carrier and transport PAHs from any source to the rhizosphere zone.

微生物在环境中的持久性被视为全球性危害。通常，多环芳烃（PAHs）和MPs被分为两个单独的污染物组，并且对两个压力源之间的关系了解甚少。小麦是人类食物链中最重要的谷物。因此，研究聚对苯二甲酸乙二醇酯（PET）在灌溉水和小麦根际区中暴露于多环芳烃时的吸附和解吸能力非常重要。进行了基于Langmuir或Freundlich模型的吸附实验，以指定PET颗粒对萘和菲的吸附能力。此外，还进行了脱附实验，以确定根际区中的MP是否可以释放先前吸附的萘和菲。对于解吸实验，根据不同的环境压力考虑了三种情况。结果表明，当PET颗粒暴露于萘时（18$\mathrm{\mu }$g / l）和菲（0.11 $\mathrm{\mu }$g / l），它们分别吸附了17.44和0.03 $\mathrm{\mu }$分别为g / l的萘和菲。在所有三种情况下（根流出物），PET颗粒对萘的吸附浓度相同（平均3.775）$\mathrm{\mu }$g / l）和菲（平均0.00875 $\mathrm{\mu }$g / l）。这表明根系分泌物含量的变化不会影响PET对PAHs污染物的解吸能力。通常，这项研究的结果表明，根部分泌物中的PET颗粒吸收了96.89％的萘和27.27％的苯并解吸了21.65％的被吸附的萘和29.17％的被吸附的菲。结果表明，PET颗粒可以充当载体并将PAHs从任何来源转移到根际区。