A Novel Personal Passive Sampler for Collecting Gaseous Phthalates

Area of Science:

• Environmental Chemistry
• Occupational Health

Background:

• Dermal absorption of gaseous chemicals poses health risks.
• Limited sampling techniques hinder accurate exposure assessment for airborne chemicals.

Purpose of the Study:

• To develop and validate a novel personal passive sampler for characterizing gaseous phthalates (PAEs) at the air-skin interface.
• To differentiate gaseous PAEs from particulate and skin-associated compounds.

Main Methods:

• Construction of a personal passive sampler with a polydimethylsiloxane (PDMS) disk, membrane filter, and stainless-steel mesh.
• Validation in a real-life setting by comparing PAE profiles in the sampler with active samples and traditional wristbands.
• Analysis of PAE composition and presence of skin lipids.

Main Results:

• The passive sampler successfully collected gaseous PAEs, with low-molecular-weight PAEs dominating the composition.
• PDMS disks showed consistent PAE profiles with ambient air, while watchbands contained significant amounts of non-gaseous PAEs and skin lipids.
• The sampler effectively prevented particle and skin lipid contamination of the sorbent phase.

Conclusions:

• The developed passive sampler accurately measures gaseous PAEs near the air-skin interface.
• Sampling strategy is a critical determinant for accurate exposure assessment of airborne chemicals.
• This method improves health risk assessment by isolating gaseous chemical exposure.