Sun, Qing; Lu, Feng-Hui; Ni, Hong-Gang published an article in 2021. The article was titled 《Microplastic-water partitioning of two states halogenated PAHs: Solute and sol》, and you may find the article in Environmental Research.Formula: C14H8Br2 The information in the text is summarized as follows:
The complex interactions of contaminants with microplastics significantly affect ecol. risk assessments. Studies of the sorption behavior of freely dissolved hydrophobic organic contaminants (HOCs) on microplastics are common. However, concentrations of HOCs in the actual aquatic environment sometimes exceed their water solubility A possible explanation is that a microplastic-sol-water three-phase medium (TPM) is formed in the actual water environment. Both states HOCs (in solute and sol) have the potential to migrate to particles suspended in water. To confirm this view, four kinds of microplastics and eight halogenated polycyclic aromatic hydrocarbons (HPAHs) were selected to examine the partitioning of HPAHs between microplastics and water (sol and solute). Both monolayer and multilayer coverage of HPAHs onto microplastics occurred, and chem. sorption dominated the pseudo-sorption mechanism. The microplastic-water partition ratios of HPAHs (0.12-0.74) were approx. four to five orders of magnitude lower than their corresponding KOW values, suggesting that mechanisms other than sorption were involved. Apparently, the sol HPAHs contributed almost identically large increments to both microplastics and water, and closed the gap. For microplastic-supported HPAHs, the contribution of the sol fraction was more than triple that of the dissolved fraction; the key influencing factor was the water solubility of HPAHs. In the experiment, the researchers used 9,10-Dibromoanthracene(cas: 523-27-3Formula: C14H8Br2)
9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.Formula: C14H8Br2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary