A safe and efficient method for determining aluminum in food

Abstract

The invention relates to a safe and efficient method for determining aluminum in food, which comprises the following steps: (1) weighing a proper amount of sample, and carbonizing by using a resistance furnace; (2) placing the carbonized sample in a muffle furnace for ashing; and (3) taking out the ash, cooling, dissolving with 1% sulfuric acid, and transferring into a 50mL colorimetric tube to obtain a to-be-detected solution. According to the safe and efficient method for determining aluminum in food, no reagent is added basically, so that the blank value is low; the ash content volume of most food after burning is small, so that more samples can be treated, detected components can be enriched, and the detection limit is reduced; organic matters are thoroughly decomposed and the operation is simple.

Description

Technical field:

[0001] The invention relates to the technical field of food detection, in particular to a safe and efficient method for determining aluminum in food. Background technique:

[0002] "GB 5009.182-2016 National Food Safety Standard Determination of Aluminum in Food First Method Spectrophotometric Method" is wet digestion followed by colorimetric determination.

[0003] This wet digestion method has the following disadvantages: 1. A large amount of harmful gas often occurs; 2. In the early stage of digestion, a large amount of foam overflows easily; 3. The amount of reagents is large and the blank value is high; Operation; 5. The digestive juice is a mixture of nitric acid and perchloric acid, and there is a danger of explosion when it reacts with organic substances in food at high temperature. Invention content:

[0004] The purpose of the present invention is to provide a simpler, safer and more efficient method for the determination of aluminum in food aga...