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Method for detecting inorganic lead ions in marine shellfish by using HPLC-ICP-MS coupling technique

A technology of HPLC-ICP-MS and combined technology, applied in the field of aquatic product detection, to achieve the effect of reasonable selection of experimental conditions, accurate and reliable detection data, accurate scientific quality and safety

Inactive Publication Date: 2019-02-12
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there is no method standard for the determination of inorganic lead ions in aquatic products in the international ISO and CAC standards

Method used

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  • Method for detecting inorganic lead ions in marine shellfish by using HPLC-ICP-MS coupling technique
  • Method for detecting inorganic lead ions in marine shellfish by using HPLC-ICP-MS coupling technique
  • Method for detecting inorganic lead ions in marine shellfish by using HPLC-ICP-MS coupling technique

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Experimental program
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Embodiment 1

[0043] Embodiment 1: the mensuration of inorganic lead ion i.e. Pb(II) in scallop:

[0044] 1. Instruments and equipment used in this embodiment: HPLC-ICP-MS combined system:

[0045](1) HPLC (Perkin-Elmer, USA, model Series 200) part: use SERIES200 high-pressure liquid phase pump, equipped with automatic sampler, equipped with guard column CG5A 4 × 50mm and CS5A 4 × 250mm cation exchange with filler of the same material Chromatographic column;

[0046] (2) ICP-MS (Perkin-Elmer, USA, model ELAN DRC II) part: equipped with dynamic reaction cell, automatic sample injection system, radio frequency generator, plasma system, Chromera speciation analysis automatic processing interface, ion lens system , quadrupole, vacuum system, detector, gas path control system;

[0047] (3) Cooling circulating water (American POLYSCIENCE company, model SHA-C);

[0048] (4) Vortex mixer (IKA MS 3basic);

[0049] (5) Pure water system (Millipore, USA, Milli-Q Gradient A10);

[0050] (6) Circul...

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Abstract

The invention relates to a method for detecting inorganic lead ions in marine shellfish by using HPLC-ICP-MS coupling technique, and belongs to the field of food detection. The method for detecting the inorganic lead ions in the marine shellfish by using the HPLC-ICP-MS coupling technique comprises the following steps that (1) an HPLC-ICP-MS coupling system is used as a selected and used instrument and equipment; (2) a reagent and a standard solution are configured; (3) sampling treatment is carried out; (4) instrument conditions used by an experiment are included; and (5) sample detection andresult calculation are carried out. A cation-exchange chromatography can absorb the inorganic lead ions in a sample extracting solution, the inorganic lead ions are eluted through a complexing actionof oxalic acid to lead ions in flow phase, and the inorganic lead ions are analyzed through an inductively coupled plasma source mass spectrometer to obtain retention time of the inorganic lead ionsand pulse strength of a degree of separation of the inorganic lead ions. An equation of linear regression is obtained by instrument computer fitting according to integrals of the strength of a standard series solution and the pulse strength. According to the method for detecting the inorganic lead ions in the marine shellfish by using the HPLC-ICP-MS coupling technique, an inorganic lead element in aquatic products can be accurately detected, quality safety of the aquatic products and products of the aquatic products can be accurately and scientifically evaluated, and meanwhile, an important significance is provided for setting a new standard for limiting harmful elements in the aquatic products.

Description

Technical field: [0001] The invention belongs to the technical field of aquatic product detection, and in particular relates to a method for measuring inorganic lead ions in aquatic products by using high performance liquid chromatography-inductively coupled plasma mass spectrometer (HPLC-ICP-MS) combined technology. Background technique: [0002] Lead is one of the more toxic heavy metal pollution, and once it enters the human body, it will be difficult to get rid of it. It is harmful to the nervous system, bone hematopoietic function, digestive system, male reproductive system, etc., and has chronic poisoning effect. Lead can directly damage human brain cells, especially the nervous system of the fetus, and can cause congenital mental retardation, especially children whose brains are in the sensitive period of the nervous system, and have special sensitivity to lead. Lead is also carcinogenic and mutagenic. Lead pollution to aquatic products is mainly caused by the disch...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/027
Inventor 赵艳芳翟毓秀尚德荣康绪明盛晓风丁海燕
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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