EPA Method 610 Polynuclear Aromatic Hydrocarbons

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6A5430476BA34657AD784D3EA0CB910E

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日期:

2003-1-16

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APPENDIX A TO PART 136,METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND,INDUSTRIAL WASTEWATER,METHOD 610—POLYNUCLEAR AROMATIC HYDROCARBONS,1. Scope and Application,1.1 This method covers the determination of certain polynuclear aromatic hydrocarbons,(PAH). The following parameters can be determined by this method:,Parameter STORET No. CAS No.,Acenaphthene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34205 83-32-9,Acenaphthylene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34200 208-96-8,Anthracene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34220 120-12-7,Benzo(a)anthracene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34526 56-55-3,Benzo(a)pyrene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34247 50-32-8,Benzo(b)fluoranthene . . . . . . . . . . . . . . . . . . . . . . . . . . . 34230 205-99-2,Benzo(ghi)perylene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34521 191-24-2,Benzo(k)fluoranthene . . . . . . . . . . . . . . . . . . . . . . . . . . . 34242 207-08-9,Chrysene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34320 218-01-9,Dibenzo(a,h)anthracene . . . . . . . . . . . . . . . . . . . . . . . . . . 34556 53-70-3,Fluoranthene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34376 206-44-0,Fluorene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34381 86-73-7,Indeno(1,2,3-cd)pyrene . . . . . . . . . . . . . . . . . . . . . . . . . . 34403 193-39-5,Naphthalene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34696 91-20-3,Phenanthrene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34461 85-01-8,Pyrene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34469 129-00-0,1.2 This is a chromatographic method applicable to the determination of the compounds,listed above in municipal and industrial discharges as provided under 40 CFR,Part 136.1. 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. Method 625 provides gas chromatograph/mass,spectrometer (GC/MS) conditions appropriate for the qualitative and quantitative,confirmation of results for many of the parameters listed above, using the extract,produced by this method.,1.3 This method provides for both high performance liquid chromatographic (HPLC) and,gas chromatographic (GC) approaches for the determination of PAHs. The gas,chromatographic procedure does not adequately resolve the following four pairs of,compounds: Anthracene and phenanthrene; chrysene and benzo(a)anthracene;,benzo(b)fluoranthene and benzo(k)fluoranthene; and dibenzo(a,h) anthracene and,indeno (1,2,3-cd)pyrene. Unless the purpose for the analysis can be served by,reporting the sum of an unresolved pair, the liquid chromatographic approach must,be used for these compounds. The liquid chromatographic method does resolve all 16,of the PAHs listed.,1.4 The method detection limit (MDL, defined in Section 15.1)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.,1.5 The sample extraction and concentration steps in this method are essentially the same,as in Methods 606, 608, 609, 611, and 612. Thus, a single sample may be extracted to,measure the parameters included in the scope of each of these methods. When,cleanup is required, the concentration levels must be high enough to permit selecting,aliquots, as necessary, to apply appropriate cleanup procedures. Selection of the,aliquots must be made prior to the solvent exchange steps of this method. The,analyst is allowed the latitude, under Sections 12 and 13, to select chromatographic,conditions appropriate for the simultaneous measurement of combinations of these,parameters.,1.6 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 136.4 and 136.5.,1.7 This method is restricted to use by or under the supervision of analysts experienced,in the use of HPLC and GC systems and in the interpretation of liquid and gas,chromatograms. Each analyst must demonstrate the ability to generate acceptable,results with this method using the procedure described in Section 8.2.,2. Summary of Method,2.1 A measured volume of sample, approximately 1 L, is extracted with methylene,chloride using a sep……

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