Vol.5 No.4 2013
46/70

Research paper−270−Synthesiology - English edition Vol.5 No.4 pp.270-286 (Mar. 2013) of hazardous substances which becomes the basis for the discussion in the Stockholm Convention on Persistent Organic Pollutants (hereinafter, POPs Convention). However, the individual analysis methods and the quality assurance and quality control (QA/QC) of each chemical are rarely discussed in detail, and presently, the quality and reliability of these analyses are not thoroughly considered.In the global environmental issue, it is essential that any value, such as the concentration of CO2 in the atmosphere causing global warming, measured in any part of the world, can be considered reliable and mutually comparable. To achieve this goal, we aimed to develop an analysis method with high reliability, and establish the international standard for the analysis method for the environmental researchers and analysts around the world. We also aimed to create a certified reference material (CRM), so the analysis value will be traceable to the SI unit. As a reference concerning the standardization of the environmental analysis method, the system of ISO and JIS will be briefly explained below.The ISO standardization is conducted by the technical 1 IntroductionMany chemical substances are manufactured and used to support our life in a convenient and efficient way. However, some of the chemical substances may affect humans or the ecological system even if they are present in the environment in small amounts. The nonylphenol (NP, Fig. 1), perfluorooctanesulfonic acid (PFOS, Fig. 2), and perfluorooctanoic acid (PFOA, Fig. 2) that are subjects of this research are recognized as endocrine disrupting chemicals (EDCs) and persistent organic pollutants (POPs), respectively. For NP, the environmental standard for water quality was set in 2012 in consideration of its effect on aquatic organisms. To take appropriate measures against the environmental issues that may be caused by such chemical substances, it is mandatory to understand the environmental load capacity and to clarify the global environmental dynamics. In order to prevent pollution and understand the distribution of such chemical substances in the environment, it is necessary to develop the analysis method which allows high sensitivity and precise detection. Particularly, in the measurement of ultra-trace substances, erroneous measurement may unnecessarily inflate social anxiety and may result in wrong countermeasures. Therefore, the accumulation of reliable analysis data for hazardous chemical substances in the environment is extremely important.In fact, many literatures and reports are gathered for the risk assessment (document that summarizes the risk outline) - Contribution to international control of hazardous chemicals by using advanced technologies-The development and dissemination of reliable analysis methods and reference materials, and the accumulation of high-quality analytical data are important to: (1) understand the environmental impact of hazardous chemicals; (2) evaluate the safety and effectiveness of international treaties regarding these chemicals; and (3) formulate policies accordingly. We published an international standard method for analysis of hazardous chemicals, using recent data on hazardous chemical usage and environmental persistence, before international regulations came into force. Here, we describe the development of our method, its adoption as ISO and JIS standards, and the significance of these achievements.Standardization of environmental analysis methods of hazardous chemicalsKeywords : ISO 25101, PFOS, environmental analysis, Stockholm convention on persistent organic pollutants (POPs), hazardous chemicals[Translation from Synthesiology, Vol.5, No.4, p.261-276 (2012)]Sachi Taniyasu1, Nobuyasu Hanari2, Yuichi Horii3 and Nobuyoshi Yamashita1*1. Research Institute for Environmental Management Technology, AIST 16-1 Onogawa Tsukuba 305-8569, Japan*E-mail: 2. National Metrology Institute of Japan, AIST Tsukuba Central 3, 1-1-1 Umezono, Tsukuba 305-8563, Japan, 3. Center for Environmental Science in Saitama 914 Kamitanadare, Kazo 347-0115, JapanOriginal manuscript received June 27, 2012, Revisions received September 21, 2012, Accepted September 25, 2012Fig. 1 Structural formula for linear nonylphenol (NP)HO

元のページ 

page 46

※このページを正しく表示するにはFlashPlayer10.2以上が必要です