Detection method for determining migration quantity of trace lead, cadmium, arsenic and antimony in food contact material by sequential injection-HG-AFS method

A technology of HG-AFS and food contact materials, which is applied in the detection field of the migration of harmful elements in food contact materials, can solve the problems of cumbersome and time-consuming operations, low sensitivity, and cumbersome operations
CN102353662AInactive Publication Date: 2012-02-15THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Publication Date
2012-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a detection method for determining the migration quantity of harmful elements in a food contact material, especially to a detection method for determining the migration quantity of lead, cadmium, arsenic and antimony in a food contact material by the sequential injection-hydride generation-atomic fluorescence spectroscopy (HG-AFS) method. The method provided by the invention comprises the following steps of: 1, migration test; 2, food simulacrum test solution treatment; 3, blank test; 4, sequential injection-hydride generation-atomic fluorescence spectroscopy determination. By the adoption of L-cysteine as a pre-reducing agent or by the adoption of a direct dilution method to eliminate severe inhibition and interference of 4% acetate base to the determination of lead and cadmium by an atomic fluorescence method, the migration quantity of arsenic, antimony, lead and cadmium in a food contact material can be efficiently, simply and rapidly determined. The migration quantity of four harmful elements can be detected only by a simple pre-treatment. The detection limits of lead cadmium, cadmium, arsenic and antimony are respectively 0.010, 0.010, 0.010 and 0.010mg / L.
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Description

technical field

[0001] The invention relates to a detection method for the migration of harmful elements in food contact materials, in particular to a method for measuring the migration of lead, cadmium, arsenic and antimony in food contact materials using sequential injection-hydride generation-atomic fluorescence spectrometry (HG-AFS method) Quantitative detection method. Background technique

[0002] The production methods of ceramic tableware are divided into three types: over-glaze color, in-glaze color and under-glaze color. Enamel is an inorganic glass enamel coated and fired on the surface of a metal base. The color glaze contains compounds harmful to human body such as lead, cadmium and antimony. The main components of stainless steel are iron, chromium, and nickel alloys. In addition, they also contain trace elements such as manganese, titanium, cobalt, arsenic, and cadmium, which make stainless steel stable, rust-resistant, and corrosion-resistant. Aluminum tab...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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