Improvements in pollutant monitoring: Optimizing silicone for co-deployment with polyethylene passive sampling devices

Improvements in pollutant monitoring: optimizing silicone for co-deployment with polyethylene passive sampling devices.

Sequestering semi-polar compounds can be difficult with low-density polyethylene (LDPE), but those pollutants may be more efficiently absorbed using silicone. In this work, optimized methods for cleaning, infusing reference standards, and polymer extraction are reported along with field comparisons of several silicone materials for polycyclic aromatic hydrocarbons (PAHs) and pesticides. In a fi...

Monitoring polynuclear aromatic hydrocarbons in aqueous environments with passive low-density polyethylene membrane devices.

Low-density polyethylene membranes, typically filled with triolein, have been previously deployed as passive environmental samplers designed to accumulate nonpolar hydrophobic chemicals from water, sediments, and air. Hydrocarbons in such samplers, known as semipermeable membrane devices (SPMDs), diffuse through pores in the membranes and are trapped in the central hydrocarbon matrix, mimicking...

Silicone Wristbands as Personal Monitoring Devices

SI Figure Explanations Extraction efficiency was determined by quantitatively analyzing subsequent rounds of extraction (100 mL ethyl acetate) from a wristband that had been infused with several compounds (four labeled PAHs) (Figure S1). Differences in extracted amount did not differ between the two time treatments (p=0.78). Therefore, extractions for all silicone PSDs in this study were done w...

Use of passive sampling devices for monitoring and compliance checking of POP concentrations in water.

BACKGROUND The state of the art of passive water sampling of (nonpolar) organic contaminants is presented. Its suitability for regulatory monitoring is discussed, with an emphasis on the information yielded by passive sampling devices (PSDs), their relevance and associated uncertainties. Almost all persistent organic pollutants (POPs) targeted by the Stockholm Convention are nonpolar or weakly ...

DESIGN AND DEPLOYMENT OF A PASSIVE MONITORING INFRASTRUCTURE / TALK 02 Design and Deployment of a Passive