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ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels
ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine FuelsASTM D1840 Standard Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels by Ultraviolet Spectrophotometry9. Calibration and Standardization9.1 Instead of direct calibration of the spectrophotometer with known naphthalenes, ...
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ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels
ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine FuelsASTM D1840 Standard Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels by Ultraviolet Spectrophotometry7. Apparatus7.1 Spectrophotometer, equipped to measure the absorbance of solutions in the spectral region ...
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ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels
ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine FuelsASTM D1840 Standard Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels by Ultraviolet Spectrophotometry4. Summary of Test Method4.1 The total concentration of naphthalenes in jet fuels is determined by measurement ...
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ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels
ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine FuelsASTM D1840 Standard Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels by Ultraviolet Spectrophotometry1. Scope1.1 This test method covers the determination, by ultraviolet spectrophotometry, of the total concentration ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels12. Precision and Bias12.1 Precision - The precision of this test method as obtained by statistical analysis of interlaboratory test results is as follows:12.1.1 Repeatability - The difference between successive test results, obtained by ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels10. Procedure10.1 Weigh into a separatory funnel a sample of diesel fuel to the nearest 0.1 mg, not exceeding 2 mL (Note 4), and not containing more than 1.0 mg of amyl nitrate. Add 2 mL of the m-xylenol solution and shake thoroughly. Add ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels9. Preparation of Calibration Curve9.1 Prepare a series of standard samples containing a known amount of amyl nitrate in diesel fuel, covering the range of 0.2 to 2.0 mg of amyl nitrate per gram (Note 3). Weigh 0.5-g portions of these standards, ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels6. Apparatus6.1 Absorption Cells, matched, having a 1.000 more or less 0.002-cm light path.6.2 Distillate Collector, borosilicate glass with standard taper joints and sealed-in funnel (Fig. 1).6.3 Electric Heating Mantle, to fit a 300-mL ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels3. Summary of Test Method3.1 This test method is based on the simultaneous hydrolysis of the ester in 62.5 % sulfuric acid and nitration of m-xylenol by the nitric acid liberated. The nitroxylenol is distilled from the reaction mixture and ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels1. Scope1.1 This test method covers the determination of 0.1 to 0.5 volume percent amyl nitrate in diesel fuels.1.2 The preferred units are acceptable metric units.1.3 This standard does not purport to address all of the safety concerns, ...
