GB/T 5686.4-2022: Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of phosphorus content - Molybdenum blue spectrophotometric method and bismuth phosphomolybdate blue spectrophotometric method

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Scope

This document describes the determination of phosphorus content in ferromanganese,
ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal, using
molybdenum blue spectrophotometric method and bismuth phosphomolybdate blue
spectrophotometric method.
This document is applicable to the determination of phosphorus content in ferromanganese,
ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal. The
determination range (mass fraction) is 0.0030% ~ 0.650%. Method 1.molybdenum blue
spectrophotometric method, which is applicable to the determination of phosphorus content in
ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese
metal, with a determination range (mass fraction) of 0.0030% ~ 0.450%; Method 2.bismuth
phosphomolybdate blue spectrophotometric method, which is applicable to the determination
of phosphorus content in ferromanganese, ferromanganese-silicon, nitrogen-bearing
ferromanganese and manganese metal, with a determination range (mass fraction) of 0.0030%
~ 0.650%.

Basic Data

Standard ID	GB/T 5686.4-2022 (GB/T5686.4-2022)
Description (Translated English)	Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of phosphorus content - Molybdenum blue spectrophotometric method and bismuth phosphomolybdate blue spectrophotometric method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H11
Classification of International Standard	77.100
Word Count Estimation	14,153
Date of Issue	2022-10-14
Date of Implementation	2023-02-01
Older Standard (superseded by this standard)	GB/T 5686.4-2008
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration