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GB/T 3260.2-2013Methods for chemical analysis of tin - Part 2: Determination of iron content - 1,10-phenanthroline photometric method (English PDF)

锡化学分析方法第2部分：铁量的测定 1,10-二氮杂菲分光光度法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 17, 2013

Implementation date

September 1, 2014

Scope

GB/T 3260.2-2013 is the English-translated version of 锡化学分析方法第2部分：铁量的测定 1,10-二氮杂菲分光光度法.

GB/T 3260.2-2013 is the Chinese standard "Methods for chemical analysis of tin - Part 2: Determination of iron content - 1,10-phenanthroline photometric method".

Its scope clause reads: GB/T 3260 provisions of this part of the determination of tin in iron content. This section applies to the determination of tin in iron content.

Determination of the range of 0.00050% - 0.0600%. Its clauses include method summary; reagents.

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Document preview — GB/T 3260.2-2013

National Standard of the People's Republic of China

ICS: 77.120.60
Classification: H 13
Replacing: GB/T 3260.2-2000

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Method summary
3 Reagents
3.8 sodium thiosulfate solution (200g/L)
3.11 iron standard stock solution
3.12 Iron standard solution
4.1 Sample

1 Scope

GB/T 3260 provisions of this part of the determination of tin in iron content.

This section applies to the determination of tin in iron content. Determination of the range of 0.00050% - 0.0600%.

2 Method summary

Samples with hydrochloric acid and hydrogen peroxide dissolved in p-nitrophenol as an indicator, with dilute aqueous ammonia test solution to pH 5 to 6, by adding hydrochloric acid

Hydroxylamine reduced iron (III), Fe (II) with 1,10-phenanthroline to form a red complex in a spectrophotometer at 510nm wavelength absorption measured

Luminosity.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.

3.1

hydrochloric acid (rho1.19g/mL), pure class distinctions.

3.2

Hydrogen peroxide (30%).

3.3

hydrochloric acid (119).

3.4

ammonia (21).

3.5

citric acid solution (400g/L).

3.6

disodium edetate (by Na2EDTA) solution (25g/L).

3.7

hydroxylamine hydrochloride solution (100g/L).

3.8 sodium thiosulfate solution (200g/L)

Store in a brown bottle.

To 100mL, mix, stored in a brown bottle.

3.10

pairs nitrophenol solution (0.5g/L).

3.11 iron standard stock solution

Weigh 0.1000g metallic iron (wFe>=99.99%), placed in 200mL beaker, covered table dish, add

10mL of hydrochloric acid (3.1), 0.5mL of hydrogen peroxide (3.2), heat gently to dissolve completely, get rid of free chlorine boiled and cooled. Purged water table dish and cup

Wall, moved into 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 100µg iron.

3.12 Iron standard solution

Pipette 50.00mL iron standard stock solution (3.11) in 500mL flask, add 1mL hydrochloric acid (3.1),

Dilute with water to volume, and mix. This solution 1mL containing 10µg iron.

Step 4 Analysis

4.1 Sample

Table 1 sample was weighed, accurate to 0.0001g.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Similar standards

GB/T 46786-2025|GB/T 8152.6-2025|GB/T 13818-2024|GB/T 13821-2023|GB/T 3260.11-2023|GB/T 8151.25-2023

Editions of GB/T 3260.2

Edition	Title	Revision	Status
GB/T 3260.2-2013	Methods for chemical analysis of tin - Part 2: Determination of iron content - 1,10-phenanthroline photometric method	current edition	Current
GB/T 3260.2-2000	Methods for chemical analysis of tin - Part 2: Determination of iron content - 1,10-phenanthroline photometric method	previous edition	Superseded

This page sells the current edition, GB/T 3260.2-2013. Earlier editions are listed for reference only.

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