T/JSP 05-2025 Active Group standards

T/JSP 05-2025 Determination of Water-Soluble Anions in Steel Corrosion Products by Ion Chromatography

T/JSP 05-2025

Publish Date: 2025-01-13 Implement Date: 2025-01-17 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/JSP 05-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for steel and iron alloys

ICS Name: Analysis Chemistry Comprehensive

Publish Date: 2025-01-13

Implement Date: 2025-01-17

Scope

Scope: This document specifies a method for determining the content of water-soluble anions in steel corrosion products by ion chromatography. This document is applicable to the determination of water-soluble anions such as fluoride (F-), chloride (Cl-), nitrite (NO2-), bromide (Br-), nitrate (NO3-), sulfate (SO42-), and phosphate (PO43-), etc. in steel corrosion products. The detection limits (in test solution) of this document are: fluoride (F-) 0.01 mg/L, chloride (Cl-) 0.03 mg/L, nitrite (NO2-) 0.01 mg/L, bromide (Br-) 0.01 mg/L, nitrate (NO3-) 0.02 mg/L, phosphate (PO4-) 0.02 mg/L, and sulfate (SO4-) 0.03 mg/L. The determination of water-soluble anions in corrosion products of other metal materials can be carried out by referring to this document. Main technical content: Steel is currently one of the most widely used materials, and corrosion is one of the important causes of its failure. Analyzing the corrosion products and subsequently analyzing the types and sources of the corrosive medium are of great significance for identifying the causes of corrosion, prevention, and control. In the analysis of steel corrosion products, most corrosion of steel products is related to acidic substances, especially hydrochloric acid, sulfuric acid, nitric acid, and hydrofluoric acid. For the analysis of the main components of corrosion products, there are methods such as energy spectroscopy analysis, X-ray diffraction analysis, X-ray photoelectron spectroscopy analysis, and Raman spectroscopy analysis, but these analyses are mainly qualitative/semi-quantitative methods with poor analysis accuracy, suitable for the analysis of corrosion products with high concentrations, but not suitable for the analysis of corrosion products with low concentrations. Because all iron salts in steel corrosion products are highly water-soluble, ion chromatography is widely used for the analysis of impurities in chemical products, water samples, and has high analysis accuracy, allowing rapid and