Simultaneous extraction of six phthalic acid esters from polyethylene terephthalate (PET) bottled water using poly (ionic liquid) functionalised silica coated-iron oxide nanoparticles: a risk assessment study

In this research, a poly (ionic liquid) functionalised silica-coated magnetic nanoparticles were synthesised for the first time and utilised as novel adsorbent simultaneous extraction of six phthalic acid esters from polyethylene terephthalate bottled drinking water samples. The was prepared by grafting (1-benzyl-3-vinyl-1 H-imidazol-3-ium chloride) onto Fe3O4nanoparticles via Cu(0)-mediated reversible-deactivation radical polymerisation method. Various techniques used to characterise nanomaterials. A qualitative analysis performed using ultra-performance liquid chromatography triple–quadrupole tandem mass spectrometry. Response surface methodology based on central composite design optimise procedure optimised condition each factor was; pH of3.9, 22 mg adsorbent, 3.5 min time, 3 desorption 340 µL elution solvent (methanol).The results validation method indicated its acceptable accuracy (88.6-100.1%), good linearity (r > 0.995), satisfactory repeatabilities (RSDs ≤ 6% intra- inter–day precisions) high enrichment factors (535–572). limits detection quantification proposed achieved 1.1-4.6 ngL–1and 3.6-15.3 ngL–1, respectively. study, common PAEs, including dimethyl phthalate, diethyl dibutyl benzyl butyl bis (2-ethylhexyl) di-n–octyl found in PET within range 0.21-0.94 μgL–1, under different storage conditions. Nevertheless, only negligible risk is caused PAEs consumers following recommendations, such storing at place (25°C), short period away sun.