Determination of Sorptive Parameters for Organic Toxicants Solubilized by Triton X-100 During their Pre-concentration by Porous Polymer Sorbents from Water Solutions Thin Layer Chromatography M.V. Milyukin*†, M.M. Skrynnyk‡, M.V. Gorban†
	* Corresponding authors † A.V. Dumansky Institute of Colloid Chemistry and Water Chemistry of National Academy of Sciences of Ukraine, 42 Vernadsky blvd., Kyiv, 03680 Ukraine ‡ Company “Pharmak”, 63 Frunze Str., Kyiv, 04080 Ukraine E-mail: m_milyukin@mail.ru
	Methods Objects Chem. Anal., 2015, 10(4), p. 189-194 https://doi.org/10.17721/moca.2015.189-194
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Abstract

Pre-concentration of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) from water containing high concentration of detergent (Triton X-100) were studied on a set of polymeric adsorbents: Amberlites XAD-2, XAD-4, XAD-7, XAD-16, XAD-1180, XAD-2000, XAD-2010, Polysorb-1 and Poros C18. Influence of eluent flow rate (up to 6.4 cm3/min), concentration of the detergent (up to 4.0 mg/cm3) and organic toxicants (up to 0.13 μg/cm3) on their recovery in acidic solution with the constant adsorbent volume was investigated. The following adsorptive parameters were obtained: beginning of breakthrough time (3‒47 min); 10% breakthrough time (5‒59 min); mean values of dynamic adsorptive capacity (7‒90 mg/cm3); values of adsorptive capacity at 100 min (16‒149 mg/cm3); adsorptive rates at the initial process step (2‒23). Rankings of dynamic adsorptive capacity and adsorptive capacity via 100 min were established. They may be used for preconcentration of organic toxicants from natural waters that contain high concentrations of detergent compounds. From adsorptive capacity, it is evident that the most rapid adsorptive equilibriums of Triton X-100 are achieved for Poros C18 and Polysorb-1 media. More slow – for XAD-4, XAD-1180, XAD-2010, practically equal intermediate adsorptive rates are achieved for XAD-7, XAD-2, XAD-16, and the slowest – for XAD-2000.

Keywords: pre-concentration, organochlorine pesticides, polychlorinated biphenyls, polycyclic aromatic
hydrocarbons, porous polymer adsorbents, Amberlites XAD, Polysorb-1, Poros C18

Article language: Rus