GB/T 4333.2-2023 in English

VALID

Ferrosilicon—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method

Issued on:2023-09-07
Implemented on:2024-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 4333.2-2023
Document status:	VALID
Title in English:	Ferrosilicon—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method
Title in Chinese:	硅铁磷含量的测定铋磷钼蓝分光光度法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-09-07
Implemented on:	2024-04-01
Superseding:	GB/T 4333.2-1988 Methods for chemical analysis of ferrosilicon-The reduced molybdobismuthylphosphoric acid photometric method for the determination of phosphorus content
ICS Classification:	77.100-Ferroalloys
Chinese Classification:	H11-Steel and iron alloy analysis method
Professional Classification:	GB-National Standard
Related Keywords:	phosphorus content bismuth phosphomolybdate blue blue spectrophotometric method spectrophotometric method introduction phosphorus content ferrosilicon determination
Related Topics:	Phosphate Content 90 Molybdenum Luminous Phosphorescence Phosphorous silicon content gbt 4333.2 1988 Determination of silicon content Silicon detection Molybdenum chemical analysis methods Determination of phosphorus content Molybdenum blue photometric method Phosphorus content value Ferrosilicon Phosphomolybdenum blue spectrophotometry Determination of Phosphorus Content in Vanadium Pentoxide Bismuth Phosphorus Molybdenum Blue Spectrophotometric Method Iron Phosphate Content How phosphorescence glows Molybdenum light transmission Molybdenum light transmission Determination of molybdenum iron silicon content sulfuric acid dehydration gravimetric method and silicon molybdenum blue spectrophotometric method GB/T 4333.2-1988 Determination of Phosphate by Phosphorus Bismuth Molybdenum Blue Colorimetric Method Determination of silicon content bismuth limit gb/t4333.2 Determination of phosphorus content What is the silicon content in phosphoric acid Phosphorescence peak position Total Phosphorometer Spectrometer molybdenum content Phosphorescent Rod Molybdenum Determination Methylene Blue Spectrophotometric Method Determination of Molybdenum in Air by Spectrophotometry Phosphorescence and Effective phosphorous spectrophotometry total arsenic bismuth molybdenum blue spectrophotometry Phosphorescence application Ferrosilicon and phosphorus content Ferrosilicon Phosphorus Content Molybdenum Iron content by fluorescence method Ferrosilicon Phosphorus Molybdenum Determination of molybdenum content icp Molybdenum blue method trace silicon Luminous Phosphorescence Determination of Total Phosphorus by Ultraviolet Spectrophotometry Photometric oil content Phosphorus Molybdenum Blue Spectrophotometric Determination of Phosphorus in Industrial Silicon Determination of Trace Molybdenum by Spectrophotometry Spectrophotometric Determination of Trace Molybdenum Effective molybdenum spectrophotometry Silicon measurement molybdenum spectrophotometer Determination of Bismuth Content by Ultraviolet Spectrophotometry Spectrophotometric Trace Molybdenum Phosphorometer icp phosphorus and silicon Ferrosilicon and phosphorus content icp content phosphorus phosphorous water Determination of bismuth by ultraviolet spectrophotometry Phosphomolybdenum blue spectrophotometry Determination of naphthalene content by spectrophotometry Molybdenum-silicon blue photometry for micro-silicon in water Spectrophotometer iron content Spectral Analysis + Phosphorus Content Phosphor spectrophotometry ultra-long phosphorescence Determination of Titanium Iron Phosphorus Content Bismuth Phosphorus Molybdenum Blue Spectrophotometry and Silicon Molybdenum Blue and Phosphorus Molybdenum Blue Molybdenum Blue Phosphorus Molybdenum blue spectrophotometric analysis iec62778 Blu-ray Spectrophotometric content determination method Spectrophotometric iron content Ammonium Molybdate Spectrophotometric Determination of Total Phosphorus Total Phosphorus Spectrophotometer Total Phosphorus Spectrophotometer Method in Water Phosphotungstophosphorus molybdenum blue Determination of Phosphorus by UV Spectrophotometer Ferrosilicon and phosphorus content determination spectroscopic Molybdenum blue for determination of silicon, iron and phosphorus content GB/T 4333.2 GB/T 4333.2-1988 spectrophotometric iron Ferrosilicon and phosphorus content determination spectroscopic Molybdenum Iron Phosphorus Molybdenum Blue Bismuth Phosphorus Molybdenum Blue Photometry Spectrophotometric method for iron content in phosphate rock Phosphorus content in pig iron blue phosphorescence Laboratory report on the determination of phosphorus content using phosphomolybdenum blue colorimetric method Spectrophotometer iron score Molybdenum content measurement environment Comparison of phosphorus content determination methods Phosphate detection method spectrophotometry Test method for iron content of ferric phosphate Ferrosilicon content Determination method of total phosphorus in water spectrophotometry Operation method for measuring phosphine content using molybdenum blue Silicon molybdenum blue photometry standard number Determination of phosphorus, aluminum and phosphorus content Detection method for trace phosphorus content Determination method of ferric phosphate and iron phosphorus content Determination method of phosphorus content in food Detection methods for phosphorus-containing gases Determination method of national standard phosphorus Determination of phosphorus by molybdenum blue method Molybdenum iron content detection Methods for measuring phosphorus content

《GB/T 4333.2-2023硅铁磷含量的测定铋磷钼蓝分光光度法》由TC318（全国生铁及铁合金标准化技术委员会）归口，TC318SC1（全国生铁及铁合金标准化技术委员会化学分析分会）执行，主管部门为中国钢铁工业协会。

Introduction

1. Standard Overview

GB/T4333.2-2023 standard is used to determine the phosphorus content in ferrosilicon using the bismuth phosphomolybdenum blue spectrophotometric method. This method is suitable for the determination of phosphorus content within the range of $0.010\%\sim0.060\%$ by mass fraction.

2. Comparison of standard frameworks

Standard version	Main changes	Scope of application
GB/T4333.2—1988	Basic structure and method	$0.010\%\sim0.060\%
GB/T4333.2—2023	Add stepwise dilution method, improve instrument requirements and sample preparation process	Keep consistent

3. Implementation suggestions

3.1 Precautions for reagent preparation

When preparing the phosphorus standard solution, ensure that the concentration and dilution ratio are precisely controlled. It is recommended to use a volume flask and strictly follow the standard operation to ensure measurement accuracy.

3.2 Importance of instrument calibration

The wavelength setting of the spectrophotometer needs to be accurately adjusted to $690~\mathrm{nm}$ and calibrated regularly to ensure the accuracy of the absorbance readings. At the same time, the cleanliness of the cuvette directly affects the results, and it is recommended to use a special cleaning agent.

3.3 Data analysis and processing

When calculating the phosphorus content, special attention should be paid to the units and significant figures of the variables in the formula. The results are rounded to two significant figures, and quality control is carried out in combination with the precision data (repeatability limit $r$ and reproducibility limit $R$).

More samples: YD/T 3934-2021 GB 18306-2015 QC/T 942-2021

Sample only — not a preview of GB/T 4333.2-2023

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