IS 1448 : Part 34 : 2025 Petroleum and its Products - Methods of Test - Part 34 Determination of Sulphur in Petroleum Products (Lamp Method)
1 SCOPE
1.1 The standard (Part 34) prescribes three methods of test for the determination of the concentration of total sulfur present in liquid petroleum products. Method A and Method B are applicable for the determination of concentration above 0.002 percent by mass, while method C is applicable for the determination of trace quantities of total sulfur as low as 0.000 5 percent by mass. However, this method cannot determine sulfur concentration less than 0.03 percent by mass in liquids that contain lead anti-knocking agents.
1.2 The direct burning procedure (see 8.1) is applicable for the analysis of such materials as gasoline, kerosene, naphtha, industrial aromatic hydrocarbons, and other liquids that can be burned completely in a wick lamp. The blending procedure (see 8.2) is applicable for the analysis of materials that cannot be burned satisfactorily by the direct procedure, such as gas oils, distillate fuel oils, naphthenic acids, and alkyl phenols. Residual fuel oils, bitumen, tar, and other heavy residues cannot be analyzed by this method.
1.3 Phosphorus compounds normally present in commercial gasoline do not interfere. A correction is given for small quantities of acid resulting from the combustion of lead anti-knocking agents. Appreciable concentration of acid forming or base forming elements from other sources interfere when the titration procedure is employed since no correction is provided in these cases.
2 REFERENCES
The standards given below contain provisions which, through reference in the text constitute provisions of this standard. At the time of publication, the editions indicated were valid. All the standards are subject to revision, and parties to an agreement based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards:
| IS No. | Title |
| IS 256 : 2024 | Glauber salt (sodium sulphate decahydrate), technical - Specification (second revision) |
| IS 265 : 2021 | Hydrochloric acid - Specification (fifth revision) |
| IS 1070 : 2023 | Reagent grade water - Specification (fourth revision) |