As a new kind of persistent organic pollutants, polychlorinated naphthalenes (PCNs) have been paid much attention owing to the environmental and health hazards. Several countries have announced moves to intensify its battle against these new pollutants to improve environmental protection. Due to the matrix complexity of soil and the low-level of targets, PCNs analysis requires ongoing development to improve the sensitivity and accuracy. The effective extraction technique that allows for their separation from interfering substances and sensitive analysis instrument that possesses low detection limits are all important parts for the analytical procedure. This review focused on the dissemination of the latest advances covering sample pretreatment and instrumental analysis methods, followed by their application in investigating the occurrence and homologues distribution of PCNs in soil. It will help readers quickly understand the PCNs analysis methods, and choose the appropriate one according to their objects and laboratory conditions, which may conduce to the supervision and treatment of new pollutions.
Keywords: Congener; Extractionl; GC-MS; Polychlorinated naphthalene; Purification.
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