We examined the possibility of analysis of Dechlorane Plus (DP) and related compounds in ambient air by using High Volume Air Sampler (HVAS) installing quartz fiber filter (QFF) and polyurethane foam (PUF), which is usually used for ambient-air-dioxin analysis. Results of recovery test showed that the QFF and PUF can trap most of targets including anti-DP, syn-DP, Dechlorane 601, Dechlorane 602 (Dec-602), Dechlorane 603 (Dec-603), Dechlorane 604, Dechlorane 604 Component B, Chlordene Plus (CP), Dibromoaldrin, Dibromochlordene, and Hexachloro(phenyl)norbornene. In addition, we analyzed 24 stock extracts of ambient air samples collected by using the HVAS in Kazo, Saitama in fiscal year 2013. Two DP isomers (anti and syn) were detected in all 24 samples. Concentrations of ΣDP (anti-DP+syn-DP) ranged from 1.2 to 6.7 pg/m3 (average: 3.9±1.3 pg/m3). No seasonal variation of ΣDP concentrations was found. fanti (anti-DP/ΣDP) values were substantially constant at the value of technical DP composition, suggesting the DP in the air samples was originated from DP products in the neighborhood. As for the DP related compounds, only Dec-602, Dec-603 and CP were detected in the range of ND (not detected) ~0.09, ND~0.05 and ND~0.13 pg/m3, respectively. To the best of our knowledge, this is the first study to report Dec-602, Dec-603 and CP in the environment in Japan.
