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

A-HG-AFS, food contact material technology, applied in the field of detection of the migration of harmful elements in food contact materials, can solve the problems of expensive instruments, low sensitivity, unreachable sensitivity, etc.
CN102353662BInactive Publication Date: 2012-12-05THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Publication Date
2012-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

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. The method comprises the following steps: 1. migration test; 2. treatment of food simulant test solution; 3. blank test; The present invention adopts L-cysteine ​​as the pre-reducing agent, or adopts the direct dilution method to eliminate the severe inhibition interference of 4% acetic acid matrix on the determination of lead and cadmium by atomic fluorescence method, and can efficiently, simply and quickly measure arsenic in food contact materials and the migration of antimony and the migration of lead and cadmium. The invention only needs simple pretreatment to detect the migration of four harmful elements, and the detection lower limits of lead, cadmium, arsenic and antimony are respectively 0.010, 0.010, 0.010 and 0.010 mg / 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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