Determination of Volatile Organic Compounds in Water-based Paints and Varnishes Using Gas Chromatography

Introduction

Organic solvents in solvent-based paints allow easy paint application and fast drying. However, in the process of drying, Volatile Organic Compounds (VOCs) which are harmful to health will be emitted into the environment. Solvent-based paint is one of the main contributors to indoor environmental pollution according to U.S. Environmental Protection Agency. Water-based paints with near zero VOC content have been steadily used as a substitute, making up to 80% of the residential market. This increase in popularity triggers the need to verify the stated amount of VOCs in water-based paints, in order to ensure that they adhere to regulations. The aim of this work is to develop a fast and efficient method for the quantitative determination of the amount of VOCs in water-based paints and varnishes using GC. Thirty solvents commonly used in water-based paints and varnishes were analyzed and quantified in reference to the method described in GB 18582-2008 by China.

November 19, 2014 GMT