SIST EN ISO 5961:1996

Water quality - Determination of cadmium by atomic absorption spectrometry (ISO 5961:1994)

Specifies two methods for the determination of cadmium: using atomic absorption spectrometry (AAS) in an air-acetylene flame (aspiration of the acidified sample into the flame and measurement of the cadmium concentration at a wavelength of 228,8 nm) and by electrothermal atomization AAS (injection of the acidified sample into an electrically heated graphite tube of an electrothermal atomization atomic absorption spectrometer and measurement of the absorbance at a wavelength of 228,8 nm).

Bestimmung von Cadmium durch Atomabsorptionsspektrometrie (ISO 5961:1994)

In dieser Norm werden zwei Verfahren für die Bestimmung von Cadmium festgelegt:die Bestimmung von Cadmium mittels Atomabsorptionspektrometrie in der Flamme (AAS) (Abschnitt 2) und die elektrothermische Atomisierung (AAS) (Abschnitt 3).

Qualité de l'eau - dosage du cadmium par spectrométrie d'absorption atomique (ISO 5961:1994)

La présente Norme internationale prescrit deux méthodes de dosage du cadmium: par spectrométrie d'absorption atomique dans la flamme (section 2), et par spectrométrie d'absorption atomique avec atomisation électrothermique (section 3). 1.1.1 Dosage du cadmium dans une flamme air/acétylène Cette méthode s'applique à l'analyse des eaux et des eaux usées pour des concentrations de cadmium comprises entre 0,05 mg/l et 1 mg/l. Un dosage à de plus fortes concentrations est possible par dilution de l'échantillon. La gamme de travail de cette méthode peut être étendue à de plus faibles concentrations en procédant à une évaporation minutieuse de l'échantillon, préalablement acidifié à l'aide d'acide nitrique. Le cadmium peut être déterminé dans les boues et sédiments après une procédure de digestion appropriée évitant la formation d'un précipité. 1.1.2 Dosage du cadmium par atomisation électrothermique La méthode permet de doser le cadmium dans l'eau. Avec un volume de dosage de 10 µl, la gamme de concentration est comprise entre 0,3 µg/l et 3 µg/l. La gamme de concentration peut être étendue en diluant l'échantillon d'eau ou en utilisant de plus petits volumes de dosage. Le cadmium peut être dosé dans les boues et sédiments après une procédure adéquate de digestion.

Kakovost vode - Določanje kadmija z atomsko absorpcijsko spektrometrijo (ISO 5961:1994)

General Information

• Status: Published
• Publication Date: 31-May-1996
• ICS: 13.060.50 - Examination of water for chemical substances
• Technical Committee: KAV - Water quality
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jun-1996
• Due Date: 01-Jun-1996
• Completion Date: 01-Jun-1996
• Directive: Slovenian Regulation2017-01-3098 - Pravilnik o obratovalnem monitoringu stanja tal
• Directive:

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  Not Harmonized76/464/EEC - Pollution caused by certain dangerous substances discharged into the aquatic environment of the Community
• Mandate: M/BC/CEN/92/45 - Water analysis
• Ref Project: EN ISO 5961:1995 - Water quality - Determination of cadmium by atomic absorption spectrometry (ISO 5961:1994)

Relations

• Referred By: SIST EN 1200:2005 - Chemicals used for treatment of water intended for human consumption - Trisodium orthophosphate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1201:2005 - Chemicals used for treatment of water intended for human consumption - Potassium dihydrogen orthophosphate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1204:2005 - Chemicals used for treatment of water intended for human consumption - Calcium tetrahydrogen bis(orthophosphate)
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1205:2005 - Chemicals used for treatment of water intended for human consumption - Disodium dihydrogen pyrophosphate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1197:2007 - Chemicals used for treatment of water intended for human consumption - Monozinc phosphate solution
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1198:2005 - Chemicals for treatment of water intended for human consumption - Sodium dihydrogen orthophosphate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15030:2013 - Chemicals used for treatment of water intended for human consumption - Silver salts for intermittent use
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15039:2006 - Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15040:2006 - Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Phosphonic acids and salts
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15040:2014 - Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Phosphonic acids and salts
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1208:2005 - Chemicals used for treatment of water intended for human consumption - Sodium calcium polyphosphate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1207:2005 - Chemicals used for treatment of water intended for human consumption - Tetrapotassium pyrophosphate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1197:2014 - Chemicals used for treatment of water intended for human consumption - Monozinc phosphate solution
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15041:2014 - Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polyphosphates
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1212:2005 - Chemicals used for treatment of water intended for human consumption - Sodium polyphosphate
• Effective Date: 28-Jan-2026

Overview

SIST EN ISO 5961:1996 - Water quality - Determination of cadmium by atomic absorption spectrometry is an international standard published by CEN, which specifies reliable laboratory methods for measuring cadmium concentrations in water. Based on ISO 5961:1994, this standard ensures accurate detection and monitoring of cadmium, a toxic heavy metal, using atomic absorption spectrometry (AAS). The procedures described are essential for water quality assessment and environmental protection, catering to regulatory, industrial, and research applications.

Key Topics

• Atomic Absorption Spectrometry (AAS): The document covers methods using AAS, a sensitive analytical technique for quantifying trace metals.
• Flame AAS Method: Involves aspiration of acidified water samples into an air-acetylene flame, with measurement of cadmium at the 228.8 nm wavelength.
• Electrothermal Atomization AAS: Utilizes an electrically heated graphite tube to atomize the sample, enhancing sensitivity for detecting lower concentrations of cadmium.
• Sample Preparation: Guidance on acidification and handling of samples to minimize contamination and ensure accurate results.
• Precision and Calibration: Outlines quality control, calibration procedures, and considerations for reliable and reproducible cadmium determination.

Applications

The methods specified in SIST EN ISO 5961:1996 are widely used for:

• Regulatory Compliance: Assists authorities and laboratories in meeting water quality regulations and environmental standards by monitoring cadmium levels in surface, ground, and drinking water.
• Industrial Wastewater Monitoring: Supports industries in analyzing their effluent discharges to prevent environmental contamination and health risks associated with cadmium.
• Environmental Assessment: Provides reliable data for environmental studies, risk assessments, and pollution control programs focused on trace heavy metals in the water cycle.
• Research Laboratories: Enables scientific institutions and research groups to measure cadmium as part of broader environmental or toxicological studies.

Related Standards

For comprehensive water quality analysis and trace metal determination, organizations may also refer to:

• ISO 8288: Water quality - Determination of cobalt, nickel, copper, zinc, cadmium, and lead by flame atomic absorption spectrometry.
• EN ISO 11885: Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES).
• ISO 15586: Water quality - Determination of trace elements using graphite furnace atomic absorption spectrometry (GFAAS).
• ISO 5667 series: Guidance on sampling techniques for water quality assessments.

Practical Value

Implementing SIST EN ISO 5961:1996 supports laboratories, industries, and regulatory bodies in achieving:

• Accurate Cadmium Quantification: Ensures trust in reported cadmium concentrations in compliance monitoring and research.
• Standardized Procedures: Promotes consistency across labs and jurisdictions for cadmium determination using recognized AAS techniques.
• Enhanced Water Safety: Plays a vital role in safeguarding public health and the environment by controlling exposure to potentially hazardous cadmium contamination.

By following the protocols in SIST EN ISO 5961:1996, stakeholders benefit from established best practices for water quality monitoring and trace cadmium determination, contributing to effective water resource management and environmental protection.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-1996
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Water quality - Determination of cadmium by atomic absorption spectrometry (ISO
5961:1994)
Bestimmung von Cadmium durch Atomabsorptionsspektrometrie (ISO 5961:1994)
Qualité de l'eau - dosage du cadmium par spectrométrie d'absorption atomique (ISO
5961:1994)
Ta slovenski standard je istoveten z: EN ISO 5961:1995
ICS:
13.060.50 3UHLVNDYDYRGHQDNHPLþQH Examination of water for
VQRYL chemical substances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...