SAMPLING, SCREENING AND ANALYSIS OF POLYCHLORINATED NAPHTHALENES (PCNS) IN ARTICLES AND PRODUCTS

Abstract

Polychlorinated naphthalenes (PCNs) consist of 75 potential congeners in eight homologous groups. PCNs are toxic, resist decomposition, and bioaccumulate in adipose tissue. They are transported through air, water, and migratory birds, across international borders and precipitate far from place. Released, where they accumulate in terrestrial and aquatic ecosystems, PCNs form as unintended persistent organic pollutants (UPOPs) with PCDDs, PCDFs, PCBs, and other UPOPs. The  use of polychlorinated naphthalenes in multiple applications such as chlorine rubber, pyrene, sealants or adhesives, and in similar applications such as capacitors, transformers, and anti-corrosion paints. It has innumerable uses and applications, and thus constitutes an imminent environmental danger to Earth and humans, and when identifying waste containing naphthalene. polychlorinated or contaminated with it, States and those with an interest in the seriousness of naphthalene may also consider an approach developed for the inventory of naphthalene. There are a number of different methods that have been used to collect information for POPs inventories, such as the indicative method, the qualitative method, and the quantitative method. This study explains their nature, sources, physical and chemical properties, products that may contain them, steps and stages of PCN control in products and tools, and most importantly in this study. They explain the methods of analysis and sampling in different products and in water, air and soil.