ISO 11441:1995 PDF

Name: ISO 11441:1995 — Lead sulfide concentrates — Determination of lead content — Back titration of EDTA after precipitation of lead sulfate
SKU: ISO 11441:1995
Price: 25 EUR
Availability: InStock

Lead sulfide concentrates — Determination of lead content — Back titration of EDTA after precipitation of lead sulfate

Название (английский):

ISO 11441:1995

Lead sulfide concentrates — Determination of lead content — Back titration of EDTA after precipitation of lead sulfate

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 23 февраля 1995 г.
Издание:: ISO IS 11441 edition 1 version 1
ICS:: 73.060.99

Тип поставки:

Full version225 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:3 раб. дн. (перевод)

Цена:225 €

Описание (английский):

Specifies a lead sulfate precipitation EDTA titrimetric method for the determination of lead content in lead sulfide concentrates. Applicable to all lead sulfide concentrates with lead content in the range from 10 % (m/m) to 80 % (m/m).

Abstract

Overview

Key topics and requirements

Analytical principle: Dissolution by fusion with sodium peroxide → double precipitation of lead as sulfate (with bismuth removal if needed) → dissolve lead sulfate in alkaline EDTA → back titration of excess EDTA with zinc.
Applicable range: Lead content 10–80 % (m/m).
Reagent and safety notes:
- Use analytical‑grade reagents and distilled water.
- Important reagents include sodium peroxide, sulfuric/perchloric/nitric/hydrofluoric acids, EDTA (0.1 mol·L‑1), and zinc standard solution.
- Safety warning for hydrofluoric acid handling (highly hazardous; use fume hood and PPE).
Standardization and blanks:
- EDTA is standardized against zinc and lead metal; a blank titration is performed in parallel to check reagent quality.
- Calibration factors and repeatability checks are defined; standardization must be repeated if specified ranges are exceeded.
Apparatus and sample handling:
- Class A volumetric glassware, nickel/zirconium crucibles for fusion, membrane filters and vacuum filtration apparatus.
Procedure details:
- Tabled guidance on EDTA volume by lead content (e.g., ~50 mL EDTA for 10–60 % Pb, ~70 mL EDTA for 60–80 % Pb).
- Annexes A and B are integral (sample preparation and acceptance flow‑sheet); Annex C provides precision derivation (informative).

Applications and who uses it

Quality control and assaying of lead sulfide concentrates at exploration, mining, concentrate preparation and smelting stages.
Routine laboratory analysis for metallurgical laboratories, assay offices, smelter QC, and regulatory or certification bodies.
Useful for analytical chemists, metallurgists, QA/QC managers, and providers of certified reference materials.

Related standards

ISO 385‑1 (burettes), ISO 648 (pipettes), ISO 1042 (volumetric flasks), ISO 4787 (volumetric methods), ISO 9599 (hygroscopic moisture in concentrates), ISO Guide 35 (certification of reference materials).

Keywords: ISO 11441:1995, lead sulfide concentrates, lead determination, EDTA titration, back titration, lead sulfate precipitation, titrimetric method, assay, metallurgical laboratory.

Технические детали

Технический комитет: ISO/TC 183 - Copper, lead, zinc and nickel ores and concentrates
SKU: ISO 11441:1995

Главная

Каталог

ISO 385-1:1984

Отменён

Laboratory glassware — Burettes — Part 1: General requirements

10 · PDF

25 €

ISO 6487:2015/Amd 1:2017

Действующий

Road vehicles — Measurement techniques in impact tests — Instrumentation — Amendment 1

Overview ISO 6487:2015/Amd 1:2017 is an amendment to the international standard published by the International Organization for Standardization (ISO), focusing on measurement techniques and instrumen…

1 · PDF

21 €

BS EN ISO 10427-1:2024

Действующий

Oil and gas industries including lower carbon energy. Equipment for well cementing. Casing bow-spring central…

14 · PDF

50 €

SIST EN ISO 4787:2022

Действующий

Laboratory glass and plastic ware - Volumetric instruments - Methods for testing of capacity and for use (ISO…

Overview EN ISO 4787:2021 (Laboratory glass and plastic ware - Volumetric instruments - Methods for testing of capacity and for use) is the CEN-endorsed version of ISO 4787:2021. It defines standardi…

30 · PDF

82 €

SIST ISO 9599:2016

Действующий

Copper, lead, zinc and nickel sulfide concentrates - Determination of hygroscopic moisture content of the ana…

Overview ISO 9599:2015 specifies a gravimetric loss-in-mass method to determine the hygroscopic moisture content of analysis samples of copper, lead, zinc and nickel sulfide concentrates. The method…

10 · PDF

52 €

Открыть превью (2 стр.)

ISO 11441:1995 PDF

Abstract

Overview

Похожие стандарты

Key topics and requirements

Applications and who uses it

Related standards

Технические детали

ISO 385-1:1984

Laboratory glassware — Burettes — Part 1: General requirements

ISO 6487:2015/Amd 1:2017

Road vehicles — Measurement techniques in impact tests — Instrumentation — Amendment 1

BS EN ISO 10427-1:2024

Oil and gas industries including lower carbon energy. Equipment for well cementing. Casing bow-spring central…

SIST EN ISO 4787:2022

Laboratory glass and plastic ware - Volumetric instruments - Methods for testing of capacity and for use (ISO…

SIST ISO 9599:2016

Copper, lead, zinc and nickel sulfide concentrates - Determination of hygroscopic moisture content of the ana…