The accumulation rate and equilibrium partitioning behavior of the pesticide atrazine between water and two solid phase microextraction (SPME) fibers. polydimethylsiloxane (PDMS) and polyacrylate (PA). are presented. The more polar PA is found to accumulate atrazine to a greater extent than does PDMS. https://parisnaturalfoodes.shop/product-category/soy-free-butter-spread/