BS EN ISO 11969:1996 - Water quality. Determination of arsenic. Atomic absorption spectrometric method (hydride technique)
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BS EN ISO 11969:1996 is a standard that focuses on water quality and provides a method for the determination of arsenic levels in water samples. Specifically, it outlines the use of the atomic absorption spectrometric method, with a hydride technique, to measure arsenic concentrations in water. Here's an overview of this standard:
The scope of BS EN ISO 11969:1996 is to provide a standardized procedure for the quantification of arsenic in water samples using atomic absorption spectrometry with a hydride generation technique. Arsenic is a naturally occurring element that can be present in water sources, and its measurement is important for assessing water quality and ensuring it meets established regulatory limits.
Purpose: The primary purpose of this standard is to offer a reliable and reproducible method for determining arsenic concentrations in water. Accurate measurements of arsenic levels are essential for environmental monitoring, public health, and compliance with regulatory standards related to safe drinking water.
Key Aspects Covered:
Sample Collection and Preparation: Guidelines for collecting water samples and preparing them for analysis to ensure accurate and representative results.
Hydride Generation Technique: Description and instructions for the hydride generation technique, which involves converting arsenic present in the sample into volatile arsine gas for measurement.
Atomic Absorption Spectrometry: Details on the use of atomic absorption spectrometry for detecting and quantifying the concentration of arsine gas generated from the sample.
Calibration and Standardization: Procedures for calibrating the instrument and establishing standard curves using known arsenic standards.
Measurement and Data Analysis: Instructions for measuring the concentration of arsenic in the sample and analyzing the data obtained.
Quality Control: Recommendations for implementing quality control measures to ensure the reliability and accuracy of the results.
Reporting: Guidelines for reporting the arsenic concentration in water samples, including units of measurement and any relevant statistical information.
