GB/T 31948-2015 (English Version) PDF

Standard No.: GB/T 31948-2015
Language: Chinese, Available in English version
Release Date: 2015
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 31948-2015
Replace By: GOST 12793-1977

Scope: This standard specifies the method for the determination of mercury content by direct determination of solid samples. This standard is applicable to the determination of mercury content in chromium ore, and the determination range is: 0.001 μg/g～5.00 μg/g.

GB/T 31948-2015 Referenced Document

GB/T 24243 Chromium ores.Increment sampling
GB/T 29517 Method for manual sample preparation of chrome ores in bulk
GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
GB/T 6379.2 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
JJG 548 Mercury Analyzers*， 2018-06-25 Update

2015 GB/T 31948-2015 Chromium ores.Determination of mercury content.Solid sampling and direct mercury analysis method