TAILIEUCHUNG - METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER

Organic agriculture offers developing countries a wide range of economic, environment, social and cultural benefits. Global markets for certified organic products have been growing rapidly over the past two decades. In 2006, global certified organic sales were estimated to have reached over 30 billion Euros, a 20 per cent increase over 2005, and are expected to increase to 52 billion Euros by 2012 (UNEP-UNCTAD, 2008). While most sales are in North America and Europe, production is global with developing countries producing and exporting ever-increasing shares. Due to expanding markets and attractive price premiums, numerous studies in Africa, Asia and. | APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER METHOD 603 ACROLEIN AND ACRYLONITRILE 1. Scope and Application This method covers the determination of acrolein and acrylonitrile. The following parameters may be determined by this method Parameter STORET No. CAS No. Acrolein 34210 107-02-8 Acrylonitrile 34215 107-13-1 This is a purge and trap gas chromatographic GC method applicable to the determination of the compounds listed above in municipal and industrial discharges as provided under 40 CFR Part . When this method is used to analyze unfamiliar samples for either or both of the compounds above compound identifications should be supported by at least one additional qualitative technique. This method describes analytical conditions for a second gas chromatographic column that can be used to confirm measurements made with the primary column. Method 624 provides gas chromatograph mass spectrometer GC MS conditions appropriate for the qualitative and quantitative confirmation of results for the parameters listed above if used with the purge and trap conditions described in this method. The method detection limit MDL defined in Section 1 for each parameter is listed in Table 1. The MDL for a specific wastewater may differ from those listed depending upon the nature of interferences in the sample matrix. Any modification of this method beyond those expressly permitted shall be considered as a major modification subject to application and approval of alternate test procedures under 40 CFR Parts and . This method is restricted to use by or under the supervision of analysts experienced in the operation of a purge and trap system and a gas chromatograph and in the interpretation of gas chromatograms. Each analyst must demonstrate the ability to generate acceptable results with this method using the procedure described in Section . 2. Summary of Method An inert gas is bubbled

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