Direct analysis of plasticizers in aqueous samples by
Direct analysis of plasticizers in aqueous samples by atmospheric pressure chemical ionization-tandem mass spectrometry (APCI-MS-MS) J Anal Toxicol. 2003 Jul-Aug;27(5):309-12.doi: 10.1093/jat/27.5.309. Authors Bruce A Kimball 1 , Thomas M Primus, John J Johnston Affiliation
Direct Analysis of Plasticizers in Aqueous Samples by
Bruce A. Kimball, Thomas M. Primus, John J. Johnston; Direct Analysis of Plasticizers in Aqueous Samples by Atmospheric Pressure Chemical Ionization-Tandem Mass We use cookies to enhance your experience on our website.By continuing to use our website, you are agreeing to our use of cookies.
"Direct Analysis of Plasticizers in Aqueous Samples by
The widespread manufacture of plastics requires the similarly ubiquitous use of plasticizers. Plasticizers such as bis(2-ethylhexyl) adipate (DOA) and bis(2-ethylhexyl) phthalate (DOP) enhance polymer strength and flexibility and are found in polymeric products such as cosmetics, detergents, and building and storage products (1). However, these additives are not bound to the polymer matrix and
Direct analysis of plasticizers in aqueous samples by
Figure 1. Schematic of the HPLC system employed ior the analyses of DOA and DOP. Three valves were used todirect i low between either the sample loop or loop bypass (injection valve); the analytical column or waste (switching valve); and between the MS or waste (waste valve). - "Direct analysis of plasticizers in aqueous samples by atmospheric pressure chemical ionization-tandem mass
Technical Note: Direct Analysis of Plasticizers in Aqueous
The widespread manufacture of plastics requires the similarly ubiquitous use of plasticizers. Plasticizers such as bis(2-ethylhexyl) adipate (DOA) and bis(2-ethylhexyl) phthalate (DOP) enhance polymer strength and flexibility and are found in polymeric products such as cosmetics, detergents, and building and storage products.
- What is the difference between PVC & plasticizer aqueous media?
- When surrounded by an aqueous medium, the highly hydrophobic nature of the plasticizers leads to surface-controlled leaching rates, whereas PVC/plasticizer diffusivity-controlled leaching rates have been observed for more non-polar media ( Wilkes et al., 2005 ).
- Why does the leaching rate decrease as a plasticizer becomes more hydrophobic?
- Since leaching of a plasticizer into an aqueous environment is surface-controlled, and less controlled by diffusivity of the plasticizer inside the PVC matrix, it makes sense that the leaching rate decreases as a plasticizer becomes more hydrophobic through the addition of non-polar groups.
- Are phthalate ester plasticizers used in poly (vinyl chloride)?
- The use of phthalate ester plasticizers for poly (vinyl chloride) (PVC) dates from the 1930s ( Graham, 1973) and, as of 2004, they account for 80% of all plasticizer production ( Wypych, 2004 ).
- What are plasticizers used for?
- Added to PVC in concentrations of up to 40% by weight ( Ono et al., 1975 ), plasticizers are used to impart flexibility and processability to rigid, unplasticized PVC by lowering its glass transition temperature ( Sears and Darby, 1982 ).
- Why do plasticizer molecules have a polar part?
- The plasticizer molecules must have a polar part to effectively dissolve the plasticizer into the PVC. The non-polar part of the plasticizer serves to attenuate the attractive forces between PVC chains, thus increasing the free volume and imparting flexibility to the polymer ( Wypych, 2004 ).
- Are plasticizers polar or nonpolar?
- For a plasticizer to be compatible with a relatively polar polymer such as PVC, and provide the desired flexibility, it requires both polar and non-polar parts. The plasticizer molecules must have a polar part to effectively dissolve the plasticizer into the PVC.
