EPA Method 101 Determination Of Particulate And Gaseous Mercury Emissions From Chlor-Alkali Plants (Air Streams)
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ID： |
BDC75BE32809482280E7A6D771006277 |
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文件大小(MB)： |
0.45 |
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页数： |
35 |
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文件格式： |
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日期： |
2000-2-12 |
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购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
1695,62. In Part 61, Appendix B is amended by revising,Methods 101, 101A, 102, 103, 104, 105, 106, 107, 107A, 108,108A, 108B, 108C, and 111 to read as follows:,METHOD 101 - DETERMINATION OF PARTICULATE AND GASEOUS,MERCURY EMISSIONS FROM CHLOR-ALKALI PLANTS (AIR STREAMS),NOTE: This method does not include all of the,specifications (e.g., equipment and supplies) and procedures,(e.g., sampling and analytical) essential to its,performance. Some material is incorporated by reference,from methods in Appendix A to 40 CFR Part 60. Therefore, to,obtain reliable results, persons using this method should,have a thorough knowledge of at least the following,additional test methods: Method 1, Method 2, Method 3, and,Method 5.,1.0 Scope and Application.,1.1 Analytes.,Analyte CAS No. Sensitivity,Mercury (Hg) 7439-97-6 Dependent upon recorder,and spectophotometer.,1.2 Applicability. This method is applicable for the,determination of Hg emissions, including both particulate,and gaseous Hg, from chlor-alkali plants and other sources,(as specified in the regulations) where the carrier-gas,stream in the duct or stack is principally air.,1696,1.3 Data Quality Objectives. Adherence to the,requirements of this method will enhance the quality of the,data obtained from air pollutant sampling methods.,2.0 Summary of Method.,Particulate and gaseous Hg emissions are withdrawn,isokinetically from the source and collected in acidic,iodine monochloride (ICl) solution. The Hg collected (in,the mercuric form) is reduced to elemental Hg, which is then,aerated from the solution into an optical cell and measured,by atomic absorption spectrophotometry.,3.0 Definitions. [Reserved],4.0 Interferences.,4.1 Sample Collection. Sulfur dioxide (SO2) reduces,ICl and causes premature depletion of the ICl solution.,4.2 Sample Analysis.,4.2.1 ICl concentrations greater than 10-4 molar,inhibit the reduction of the Hg (II) ion in the aeration,cell.,4.2.2 Condensation of water vapor on the optical cell,windows causes a positive interference.,5.0 Safety.,5.1 Disclaimer. This method may involve hazardous,materials, operations, and equipment. This test method does,not purport to address all of the safety problems associated,1697,with its use. It is the responsibility of the user of this,test method to establish appropriate safety and health,practices and determine the applicability of regulatory,limitations prior to performing this test method.,5.2 Corrosive Reagents. The following reagents are,hazardous. Personal protective equipment and safe,procedures are useful in preventing chemical splashes. If,contact occurs, immediately flush with copious amounts of,water for at least 15 minutes. Remove clothing under shower,and decontaminate. Treat residual chemical burn as thermal,burn.,5.2.1 Hydrochloric Acid (HCl). Highly toxic and,corrosive. Causes severe damage to tissues. Vapors are,highly irritating to eyes, skin, nose, and lungs, causing,severe damage. May cause bronchitis, pneumonia, or edema of,lungs. Exposure to concentrations of 0.13 to 0.2 percent,can be lethal to humans in a few minutes. Provide,ventilation to limit exposure. Reacts with metals,producing hydrogen gas.,5.2.2 Nitric Acid (HNO3). Highly corrosive to eyes,skin, nose, and lungs. Vapors cause bronchitis, pneumonia,or edema of lungs. Reaction to inhalation may be delayed as,long as 30 hours and still be fatal. Provide ventilation to,limit exposure. Strong oxidizer. Hazardous reaction may,occur with organic materials such as solvents.,1698,5.2.3 Sulfuric Acid (H2SO4). Rapidly destructive to,body tissue. Will cause third degree burns. Eye damage may,result in blindness. Inhalation may be fatal from spasm of,the larynx, usually within 30 minutes. 3 mg/m3 will cause,lung damage. 1 mg/m3 for 8 hours will cause lung damage or,in higher concentrations, death. Provide ventilation to,limit inhalation. Reacts violently with metals and,organics.,6.0 Equipment and Supplies.,6.1 Sample Collection. A schematic of the sampling,train used in performing this method is shown in,Figure 101-1; it is similar to the Method 5 sampling train.,The following items are required for sample collection:,6.1.1 Probe Nozzle, Pitot Tube, Differential Pressure,Gauge, Metering System, Barometer, and Gas Density,Determination Equipment. Same as Method 5, Sections,6.1.1.1, 6.1.1.3, 6.1.1.4, 6.1.1.9, 6.1.2, and 6.1.3,respectively.,6.1.2 Probe Liner. Borosilicate or quartz glass,tubing. A heating system capable of maintaining a gas,temperature of 120 ± 14 EC (248 ± 25 EF) at the probe exit,during sampling may be used to prevent water condensation.,NOTE: Do not use metal probe liners.,1699,6.1.3 Imping……
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