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ISO/NP 26286 Cereals and cereal products-Rapid determination of cadmium content solid sampling electrothermal vaporization atomic absorption spectrometry

Source:
ISO
Committee:
AW/4 - Cereals and pulses
Categories:
Information management | Standardization. General rules
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Scope

This document specifies a rapid determination of cadmium content in cereals and cereal products by solid sampling electrothermal vaporization atomic absorption spectrometry. It is applicable to the rapid quantitative determination of cadmium content in cereals and cereal products such as rice, wheat, maize, etc.

Purpose

Cadmium is a toxic heavy metal widely existed in industrial production and natural environments. Prolonged human exposure can damage organs such as kidneys and bones, and cause diseases in the nervous, respiratory, and reproductive systems. International organizations and multiple countries have stipulated limit standards for cadmium content (the Codex Alimentarius Commission sets a 0.4 mg/kg limit for cadmium in rice, while China and the EU enforce a stricter 0.2 mg/kg limit). Currently, there are few international standards for cadmium determination in cereals and cereal products, with only ISO 6561-1:2005 "Fruits, vegetables and derived products — Determination of cadmium content.- Part 1: Method using graphite furnace atomic absorption spectrometry" ,ISO 15774:2000 "Animal and vegetable fats and oils -- Determination of cadmium content by direct graphite furnace atomic absorption spectrometry" and ISO 23637:2021"Cereals — Determination of cadmium content by graphite furnace atomic absorption spectrometry with diluted nitric acid extraction" available. However, they require heavy equipment, complex pre-treatment and long processing time by this method.

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