GB/T 3253.2-2008 English PDF

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GB/T 3253.2-2008: Methods for chemical analysis of antimony and antimony trioxide -- Determination of iron content -- Orthophenanthroline spectrophotometric method
Status: Valid

GB/T 3253.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3253.2-2008	139	Add to Cart	3 days	Methods for chemical analysis of antimony and antimony trioxide -- Determination of iron content -- Orthophenanthroline spectrophotometric method	Valid
GB/T 3253.2-2001	199	Add to Cart	2 days	Methods for chemical analysis of antimony -- Determination of iron content	Obsolete
GB/T 3253.2-1982	RFQ	ASK	3 days	Chemical analysis of antimony--The O-phenanthroline photometric method for determination of iron	Obsolete

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Basic data

Standard ID: GB/T 3253.2-2008 (GB/T3253.2-2008)
Description (Translated English): Methods for chemical analysis of antimony and antimony trioxide -- Determination of iron content -- Orthophenanthroline spectrophotometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.99
Word Count Estimation: 6,628
Date of Issue: 2008-03-31
Date of Implementation: 2008-09-01
Older Standard (superseded by this standard): GB/T 3253.2-2001; GB/T 3254.5-1998
Regulation (derived from): National Standard Approval Announcement 2008 No.5 (Total No.118)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method for the determination of antimony trioxide and iron content. This section applies to the determination of antimony and antimony in iron content. Measuring range: 0. 00020% to 0. 30%.

GB/T 3253.2-2008: Methods for chemical analysis of antimony and antimony trioxide -- Determination of iron content -- Orthophenanthroline spectrophotometric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of antimony and antimony trioxide. Determination of iron content. Orthophenanthroline spectrophotometric method ICS 77.120.99 H13 National Standards of People's Republic of China Replacing GB/T 3253.2-2001 GB/T 3254.5-1998 Methods for chemical analysis of antimony and antimony trioxide Determination of the amount of iron phenanthroline spectrophotometry Posted 2008-03-31 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 3253 "Methods for chemical analysis of antimony and antimony trioxide," a total of 11 parts. --- GB/T 3253.1 chemical analysis of antimony trioxide and arsenic content of molybdenum blue spectrophotometric determination of arsenic --- GB /antimony trioxide and chemical analysis of iron content measured T 3253.2 phenanthroline spectrophotometry --- GB/T 3253.3 antimony trioxide and chemical analysis of lead content - Flame Atomic Absorption Spectrometry --- Determination of GB/T 3253.4 antimony trioxide and sulfur content of chemical analysis methods --- GB/T 3253.5 antimony trioxide and chemical analysis of copper content - Flame Atomic Absorption Spectrometry --- GB/T 3253.6 and antimony trioxide of selenium content - Atomic Fluorescence Spectrometry --- GB T 3253.7 antimony trioxide and chemical analysis methods Determination of bismuth content / --- Determination of GB/T 3253.8 antimony trioxide and antimony trioxide amount of chemical analysis methods --- Determination of GB/T 3253.9 antimony trioxide and chemical analysis of cadmium content --- Determination of GB/T 3253.10 antimony trioxide and chemical analysis of mercury content Determination --- GB/T 3253.11 antimony trioxide and analysis of lead, copper, bismuth, cadmium, iron, selenium, chromium, arsenic, mercury, tin content This is Part 2. This Part replaces GB/T 3253.2-2001 "chemical analysis of antimony - Determination of iron content", GB/T 3254.5-1998 "trioxide Antimony - Determination of iron content. " Compared with GB/T 3253.2-2001, GB/T 3254.5-1998, following this section change. --- Complements the precision and quality assurance and control provisions; --- Text format has been modified. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This part of tin mining Twinkling Star Antimony Industry Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting. This section was drafted by the tin mining flash-antimony industry limited liability company. This section is Hunan Chenzhou Mining Co., Ltd., Hunan Nonferrous Research Institute participated in the drafting. The main drafters of this section. Cuide Hai, Song should ball, Zong Yi. This part certifier. Wu Shaobo, Pangwen Lin, Yang Deli. This part of the standard replaces the previous editions are. --- GB/T 3253.2-1982, GB/T 3253.2-2001; --- GB/T 3254.5-1998. Methods for chemical analysis of antimony and antimony trioxide Determination of the amount of iron phenanthroline spectrophotometry

1 Scope

This section provides antimony trioxide and the determination of iron content. This section applies to the determination of antimony trioxide and iron content. Measurement range. 0.00020% to 0.30%.

2 Method summary

Sample and dissolved in nitric acid with hydrochloric acid, adding antimony potassium tartrate complex, the color adjustment with sodium acetate solution acidity hydroxylamine hydrochloride, the high Iron is reduced to ferrous iron, and then with phenanthroline to form a colored complex, the absorbance was measured at 510nm in a spectrophotometer.

3 Reagents

3.1 commercially available reagents 3.1.1 hydrochloric acid (ρ1.19g/mL). 3.1.2 nitrate (ρ1.42g/mL). 3.1.3 hydrobromic acid (ρ1.50g/mL). 3.1.4 ammonia (ρ0.90g/mL). 3.1.5 chloroform 3.2 solution 3.2.1 hydrochloric acid (1 + 1). 3.2.2 phenanthroline solution (2.5g/L). 3.2.3 thiocyanate solution (200g/L). 3.2.4 hydroxylamine hydrochloride solution (100g/L) 100g of hydroxylamine hydrochloride was weighed into a beaker of 1000mL was added 500mL of water dissolved, aqueous ammonia (3.1.4) neutralized by adding 20mL phenanthroline solution (3.2.2), boiled for 2min, remove the cooled to room temperature. Added 20mL thiocyanate solution (3.2.3), shift 1000mL into a separatory funnel, was added in chloroform (3.1.5) (each 10mL) oscillation extraction until the organic phase as a colorless, have discarded The organic phase. The aqueous phase was transferred to a glass bottle, diluted with water to 1000mL, and mix. 3.2.5 sodium acetate solution (200g/L) 200g of anhydrous sodium acetate was weighed into a beaker of 1000mL was added 500mL of water was heated to dissolve, was added hydroxylamine hydrochloride solution 20mL Solution (3.2.4), was added 20mL phenanthroline solution (3.2.2), boiled for 2min, remove the cooled to room temperature. KSCN was added 20mL Solution (3.2.3) and transferred to 1000mL separatory funnel, was added in chloroform (3.1.5) (each 10mL) oscillation extraction until the organic Phase colorless, organic phase was discarded. The aqueous phase was transferred to a glass bottle, diluted with water to 1000mL, and mix. 3.2.6 potassium sodium tartrate solution (250g/L) Weigh 250g of potassium sodium tartrate (KNaC4H4O6 · 4H2O), placed in 1000mL beaker, add 500mL water dissolved by heating, 20mL added hydroxylamine hydrochloride solution (3.2.4), 20mL phenanthroline solution (3.2.2), boiled for 2min, removed, cooled to room temperature. plus Into 20mL thiocyanate solution (3.2.3) and transferred to 1000mL separatory funnel, was added in chloroform (3.1.5) (each 10mL) Oscillation extraction until the organic phase as a colorless, organic phase was discarded. The aqueous phase was transferred to a glass vial is diluted with water to 1000mL, and mix. 3.3 iron standard solution 3.3.1 Iron standard stock solution (100μg/mL) ......

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