J 2016

Polymers as Reference Partitioning Phase: Polymer Calibration for an Analytically Operational Approach To Quantify Multimedia Phase Partitioning

GILBERT, Dorothea, Gesine WITT, Foppe SMEDES and Philipp MAYER

Basic information

Original name

Polymers as Reference Partitioning Phase: Polymer Calibration for an Analytically Operational Approach To Quantify Multimedia Phase Partitioning

Authors

GILBERT, Dorothea (276 Germany), Gesine WITT (276 Germany), Foppe SMEDES (528 Netherlands, guarantor, belonging to the institution) and Philipp MAYER (208 Denmark)

Edition

Analytical Chemistry, WASHINGTON, AMER CHEMICAL SOC, 2016, 0003-2700

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 6.320

RIV identification code

RIV/00216224:14310/16:00093459

Organization unit

Faculty of Science

UT WoS

000377631000039

Keywords in English

HYDROPHOBIC ORGANIC-CHEMICALS; LOW-DENSITY POLYETHYLENE; POLYCYCLIC AROMATIC-HYDROCARBONS; FREELY DISSOLVED CONCENTRATIONS; POLYCHLORINATED-BIPHENYLS; DIFFUSION-COEFFICIENTS; SORPTIVE EXTRACTION; PASSIVE SAMPLERS; AQUEOUS SAMPLES; MICROEXTRACTION

Tags

Tags

International impact, Reviewed
Změněno: 2/3/2017 12:08, Mgr. Michaela Hylsová, Ph.D.

Abstract

V originále

Polymers are increasingly applied for the enrichment of hydrophobic organic chemicals (HOCs) from various types of samples and media in many analytical partitioning-based measuring techniques. We propose using polymers as a reference partitioning phase and introduce polymer polymer partitioning as the basis for a deeper insight into partitioning differences of HOCs between polymers, calibrating analytical methods, and consistency checking of existing and calculation of new partition coefficients. Polymer-polymer partition coefficients were determined for polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and organochlorine pesticides (OCPs) by equilibrating 13 silicones, including polydimethylsiloxane (PDMS) and low-density polyethylene (LDPE) in methanol-water solutions. Methanol as cosolvent ensured that all polymers reached equilibrium while its effect on the polymers' properties did not significantly affect silicone-silicone partition coefficients. However, we noticed minor cosolvent effects on determined polymer-polymer partition coefficients. Polymer-polymer partition coefficients near unity confirmed identical absorption capacities of several PDMS materials, whereas larger deviations from unity were indicated within the group of silicones and between silicones and LDPE. Uncertainty in polymer volume due to imprecise coating thickness or the presence of fillers was identified as the source of error for partition coefficients. New polymer-based (LDPE-lipid, PDMS-air) and multimedia partition coefficients (lipid-water, air-water) were calculated by applying the new concept of a polymer as reference partitioning phase and by using polymer-polymer partition coefficients as conversion factors. The present study encourages the use of polymer-polymer partition coefficients, recognizing that polymers can serve as a linking third phase for a quantitative understanding of equilibrium partitioning of HOCs between any two phases.

Links

LM2011028, research and development project
Name: RECETOX ? Národní infrastruktura pro výzkum toxických látek v prostředí
Investor: Ministry of Education, Youth and Sports of the CR
LO1214, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX)
Investor: Ministry of Education, Youth and Sports of the CR