tailieunhanh - APPENDIX A TO PART 136 METHOD FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER

From this table of the functional groups one recognizes that any transformation between columns must involve a redox process whereas transformations between rows can be accomplished by acid/base processes. It forms a scaffolding on to which we can hang our knowledge of reactivity, and at the same time it prepares us to think of yet unseen transformations on the basis of how those transformations might be effected. This abstraction of chemical structure into a focused relationship of functional group types can be one the most powerful tools for understanding and simplifying organic chemical reactivity | APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER METHOD 604 PHENOLS 1. Scope and Application This method covers the determination of phenol and certain substituted phenols. The following parameters may be determined by this method Parameter STORET No. CAS No. 4-Chloro-3-methylphenol 34452 59-50-7 2 Chlorophenol 34586 95-57-8 2 4-Dichlorophenol 34601 120-83-2 2 4-Dimethylphenol 34606 105-67-9 2 4-Dinitrophenol 34616 51-28-5 2-Methyl-4 6-dinitrophenol 34657 534-52-1 2-Nitrophenol 34591 88-75-5 4-Nitrophenol 34646 100-02-7 Pentachlorophenol 39032 87-86-5 Phenol 34694 108-95-2 2 4 6-Trichlorophenol 34621 88-06-2 This is a flame ionization detector gas chromatographic FIDGC 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 any or all of the compounds above compound identifications should be supported by at least one additional qualitative technique. This method describes analytical conditions for derivatization cleanup and electron capture detector gas chromatography ECDGC that can be used to confirm measurements made by FIDGC. Method 625 provides gas chromatograph mass spectrometer GC MS conditions appropriate for the qualitative and quantitative confirmation of results for all of the parameters listed above using the extract produced by 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. The MDL listed in Table 1 for each parameter was achieved with a flame ionization detector FID . The MDLs that were achieved when the derivatization cleanup and electron capture detector ECD were employed are presented in Table 2. Any modification of this method beyond those expressly