Volatile organic compound emissions from latex paint--Part 1. Chamber experiments and source model development

Area of Science:

• Environmental Science
• Indoor Air Quality Research
• Building Materials Science

Background:

• Latex paints are prevalent in indoor environments, covering large surface areas.
• Paint emissions can significantly affect indoor air quality (IAQ).
• Understanding latex paint emission characteristics is crucial for IAQ management.

Purpose of the Study:

• To develop and evaluate methods for assessing latex paint's impact on IAQ.
• To create predictive models for volatile organic compound (VOC) emissions from latex paints.
• To compare different modeling approaches for paint emissions.

Main Methods:

• Conducted small chamber experiments with painted and unpainted gypsum board and stainless steel substrates.
• Collected emission data over extended periods to characterize emission profiles.
• Developed empirical and mass-transfer-based source emission models.

Main Results:

• Emissions from gypsum board persisted for over 200 days, unlike shorter-lived emissions from stainless steel.
• Developed four source emission models (two empirical, two mass-transfer-based) for gypsum board.
• Mass-transfer models required only 8 days of data, significantly less than the 100-200 days for empirical models.

Conclusions:

• Mass-transfer-based models offer a more efficient method for predicting latex paint VOC emissions.
• The developed models utilize paint formulation and mass transfer correlations for accurate predictions.
• These models can aid in managing IAQ by predicting emissions from common building materials.