EPA Method 103 Beryllium Screening Method
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ID： |
4E73CC45D6A24014B999F6947EA9377E |
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文件大小(MB)： |
0.05 |
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页数： |
13 |
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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）：
1764,METHOD 103 - BERYLLIUM SCREENING METHOD,1.0 Scope and Application.,1.1 Analytes.,Analyte CAS No. Sensitivity,Beryllium (Be) 7440-41-7 Dependent upon analytical,procedure used,1.2 Applicability. This procedure details guidelines,and requirements for methods acceptable for use in,determining Be emissions in ducts or stacks at stationary,sources.,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of the,data obtained from air pollutant sampling methods.,2.0 Summary of Method.,2.1 Particulate Be emissions are withdrawn,isokinetically from three points in a duct or stack and are,collected on a filter. The collected sample is analyzed for,Be using an appropriate technique.,3.0 Definitions. [Reserved],4.0 Interferences. [Reserved],5.0 Safety.,5.1 Disclaimer. This method may involve hazardous,materials, operations, and equipment. This test method may,not address all of the safety problems associated with its,1765,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 Hydrochloric Acid (HCl). Highly corrosive and,toxic. 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. Personal protective,equipment and safe procedures are useful in preventing,chemical splashes. If contact occurs, immediately flush,with copious amounts of water at least 15 minutes. Remove,clothing under shower and decontaminate. Treat residual,chemical burn as thermal burn.,6.0 Equipment and Supplies.,6.1 Sample Collection. A schematic of the required,sampling train configuration is shown in Figure 103-1 in,Section 17.0. The essential components of the train are as,follows:,6.1.1 Nozzle. Stainless steel, or equivalent, with,sharp, tapered leading edge.,1766,6.1.2 Probe. Sheathed borosilicate or quartz glass,tubing.,6.1.3 Filter. Millipore AA, or equivalent, with,appropriate filter holder that provides a positive seal,against leakage from outside or around the filter. It is,suggested that a Whatman 41, or equivalent, be placed,immediately against the back side of the Millipore filter as,a guard against breakage of the Millipore. Include the,backup filter in the analysis. To be equivalent, other,filters shall exhibit at least 99.95 percent efficiency,(0.05 percent penetration) on 0.3 micron dioctyl phthalate,smoke particles, and be amenable to the Be analysis,procedure. The filter efficiency tests shall be conducted,in accordance with ASTM D 2986-71, 78, 95a (incorporated by,reference ) see §61.18). Test data from the supplier's,quality control program are sufficient for this purpose.,6.1.4 Meter-Pump System. Any system that will,maintain isokinetic sampling rate, determine sample volume,and is capable of a sampling rate of greater than 14 lpm,(0.5 cfm).,6.2 Measurement of Stack Conditions. The following,equipment is used to measure stack conditions:,6.2.1 Pitot Tube. Type S, or equivalent, with a,constant coefficient (±5 percent) over the working range.,1767,6.2.2 Inclined Manometer, or Equivalent. To measure,velocity head to ±10 percent of the minimum value.,6.2.3 Temperature Measuring Device. To measure stack,temperature to ±1.5 percent of the minimum absolute stack,temperature.,6.2.4 Pressure Measuring Device. To measure stack,pressure to ±2.5 mm Hg (0.1 in. Hg).,6.2.5 Barometer. To measure atmospheric pressure to,±2.5 mm Hg (0.1 in. Hg).,6.2.6 Wet and Dry Bulb Thermometers, Drying Tubes,Condensers, or Equivalent. To determine stack gas moisture,content to ±1 percent.,6.3 Sample Recovery.,6.3.1 Probe Cleaning Equipment. Probe brush or,cleaning rod at least as long as probe, or equivalent.,Clean cotton balls, or equivalent, should be used with the,rod.,6.3.2 Leakless Glass Sample Bottles. To contain,sample.,6.4 Analysis. All equipment necessary to perform an,atomic absorption, spectrographic, fluorometric,chromatographic, or equivalent analysis.,7.0 Reagents and Standards.,7.1 Sample Recovery.,1768,7.1.1 Water. Deionized distilled, to conform to ASTM,D 1193-77, 91 (incorporated by reference - see §61.18),Type 3.,7.1.2 Acetone. Reagent grade.,7.1.3 Wash Acid, 50 Percent (V/V) Hydrochloric Acid,(HCl). Mix equal volumes of concentrated HCl and water,being careful to add the acid slowly to the water.,7.2 Analysis. Reagents and standards as necessary,for the……
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