1. 1) Ministry of the Environment Government of Japan. “Chemicals in the Environment” Reports on Environmental Survey and Monitoring of Chemicals since 1996. URL: http://www.env.go.jp/chemi/kurohon/en/index.html
2. 2) Ministry of the Environment Government of Japan. Measurement Methods for Environmental Survey and Monitoring of Chemicals (in Japanese).
3. 3) National Institute for Environmental Studies. “EnvMethod” Database of measurement methods for Environmental Survey and Monitoring of Chemicals since 1975 (in Japanese). URL: http://db-out.nies.go.jp/emdb/
4. 4) S. Suzuki et al. in The LC/MS Handbook (in Japanese), Ministry of the Environment Government of Japan. 2000.
5. 5) S. Suzuki et al. in The LC/MS guidelines and applications for the Environmental Survey and Monitoring (in Japanese), Ministry of the Environment Government of Japan, 2006.