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GB/T 34609.1-2017Method for chemical analysis of rhodium compounds - Part 1: Determination of rhodium content - Gravimetric method with hexaammine cobalt nitrate (English PDF)

铑化合物化学分析方法 第1部分:铑量的测定 硝酸六氨合钴重量法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 14, 2017

Implementation date

May 1, 2018

Scope

GB/T 34609.1-2017 is the English-translated version of 铑化合物化学分析方法 第1部分:铑量的测定 硝酸六氨合钴重量法.

GB/T 34609.1-2017 is the Chinese standard "Method for chemical analysis of rhodium compounds - Part 1: Determination of rhodium content - Gravimetric method with hexaammine cobalt nitrate".

Its scope clause reads: GB/T 34609 provisions of this part of the determination of rhodium rhodium compounds.

This section applies to rhodium nitrate (Rh (NO3) 3), rhodium sulfate (Rh2 (SO4) 3), rhodium trichloride (RhCl3), rhodium iodide (RhI3), rhodium acetate Rhodium octylate ([Rh (CH3 (CH2) 6CO2) 2] 2), rhodium acetylacetonate (C15H21O6Rh) Determination of rhodium content in triphenylphosphine rhodium chloride ([(C6H5) 3P] 3RhCl).

Measurement range .5% ~ 50%. Its clauses include method principle; reagent; device; sample.

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Document preview — GB/T 34609.1-2017

National Standard of the People's Republic of China

ICS
77.120.99
Classification
H 15

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

Contents

  • 1 Scope
  • 2 method principle
  • 3 reagent
  • 4 device
  • 5 sample

1 Scope

GB/T 34609 provisions of this part of the determination of rhodium rhodium compounds.

This section applies to rhodium nitrate (Rh (NO3) 3), rhodium sulfate (Rh2 (SO4) 3), rhodium trichloride (RhCl3), rhodium iodide (RhI3), rhodium acetate

Rhodium octylate ([Rh (CH3 (CH2) 6CO2) 2] 2), rhodium acetylacetonate (C15H21O6Rh)

Determination of rhodium content in triphenylphosphine rhodium chloride ([(C6H5) 3P] 3RhCl). Measurement range .5% ~ 50%.

2 method principle

The sample was pretreated with nitric acid, hydrochloric acid and perchloric acid, then digested in polytetrafluoroethylene tank and hydrochloric acid-hydrogen peroxide was digested under high temperature and high pressure,

Chlorine complex slightly acidic solution, with rhodium nitrate hexamine cobalt complex precipitation, gravimetric determination of rhodium.

3 reagent

Unless otherwise specified, only reagents that are identified as analytically pure and secondary water are used in the analysis.

3.1

sodium nitrite.

3.2

Nitric acid (p = 1.42 g/mL).

3.3

Hydrochloric acid (p = 1.19 g/mL).

3.4

Absolute ethanol (rho = 0.79g/mL).

3.5

ether (p = 1.19 g/mL).

3.6

perchloric acid (70.0% ~ 72.0%).

3.7

Hydrogen peroxide (30%, volume fraction).

3.8

Ammonium hexamine cobalt saturation solution Weigh 17g crystalline hexamine cobalt, add 300mL of water, heated to dissolve, with fast qualitative filter paper

After filtration, dilute to 1000 mL.

3.9

Ammonium hexamine cobalt lotion Take 15mL hexamine cobalt saturated solution, diluted with water to 500mL.

Note Preparation of hexamine cobalt nitrate in Appendix A.

4 device

Balance. Sense of 0.01mg.

5 sample

Samples stored in a closed container, the time is now.

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

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