SH/T 0696-2000 Standard test method for nickel and vanadium in FCC equilibrium catalysts by hydrofluoric/sulfuric acid decomposition and atomic spectroscopic analysis

GB/T 6679-2003 General rules for sampling solid chemical products GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 6683-1997 Petroleum products—Determination of precision data in relation to methods of test GB/T 6683.1-2021 Petroleum and related products—Precision of measurement methods and results—Part 1:Determination of precision data in relation to methods of test GB/T 6683.3-2023 Petroleum and related products—Precision of measurement methods and results—Part 3:Monitoring and verification of published precision data in relation to methods of test GB/T 6683.2-2025 Pertroleum and related products—Precision of measurement methods and results—Part 2:Interpretation and application of precision data in relation to methods of test GB/T 6683.4-2026 Petroleum and related products—Precision of measurement methods and results—Part 4:Use of statistical control charts to validate 'in-statistical-control' status for the execution of a test method standard in a single laboratory

ASTM D1977:1998