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A method for tracing the enrichment pathway of heavy metals in bivalve molluscs

A technology for bivalve mollusks and heavy metals, which is applied in the field of heavy metal enrichment and tracer to achieve the effect of overcoming the inability to trace the source.

Active Publication Date: 2022-04-01
自然资源部第四海洋研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no research on the sources of heavy metal pollution in seafood using silver stable isotope tracers.

Method used

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  • A method for tracing the enrichment pathway of heavy metals in bivalve molluscs
  • A method for tracing the enrichment pathway of heavy metals in bivalve molluscs
  • A method for tracing the enrichment pathway of heavy metals in bivalve molluscs

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Embodiment

[0032] An embodiment of the present invention provides a method for tracing the heavy metal enrichment pathway of bivalve molluscs in hanging culture. The method includes using a stable silver isotope to label a selected medium to obtain a marking medium, and the medium is a bivalve mollusc culture environment containing The medium; the stable silver isotope includes silver 107, silver 109; bivalve molluscs are exposed to the cultivation environment that contains the labeling medium; after a certain period of time, the types of stable silver isotopes in different tissues of bivalve molluscs are determined, according to The species of the stable silver isotopes determine the pathways for the enrichment of heavy metals by bivalve molluscs.

[0033] Silver has 28 isotopes (from silver 93 to silver 130) and most of the isotopes have a half-life of less than three minutes. This application selects two isotopes of silver 107 and silver 109 as tracers for labeling silver. Compared wi...

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Abstract

The invention discloses a method for tracing the heavy metal enrichment pathway of bivalve molluscs in hanging culture. The method comprises the steps of using stable silver isotope to mark the selected medium to obtain the marking medium, and the medium is the medium contained in the bivalve mollusc culture environment ; The stable silver isotopes include silver 107 and silver 109. The scheme provided by this application uses silver stable isotopes (107Ag, 109Ag) to trace the adsorption and enrichment of silver in different environmental media (sea water, suspended particulate matter, bait) by suspended cultured bivalve molluscs, and obtains silver into suspended cultured bivalve molluscs. Sources in the body, and the distribution of silver from different sources in different tissues of suspended bivalve molluscs. The solution provided by this application overcomes the disadvantage of using a single isotope that cannot be traced back to the source, and uses a simple isotopic composition and easy-to-obtain silver stable isotope as a tracer to provide technical support for the prevention and control of marine heavy metal silver pollution.

Description

technical field [0001] The invention relates to the technical field of heavy metal enrichment tracing, in particular to a method for tracing the heavy metal enrichment pathway of suspended cultured bivalve molluscs. Background technique [0002] Heavy metal pollution in the ocean has been paid attention to for a long time due to its characteristics of strong toxicity, biomagnification and refractory degradation. Silver is a heavy metal pollution element that has gradually attracted attention in recent years. Silver is a non-essential element for organisms, and its toxicity to marine organisms, especially invertebrates, is second only to mercury. The enrichment factor of silver in hanging bivalve molluscs such as oysters is higher than that of zinc and copper, and it is an indicator organism for the study of silver pollution. [0003] How to trace the sources and pathways of heavy metals enriched by suspended cultured bivalve molluscs is the key to the prevention and control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54A23K10/16A23K50/80G01N1/40G01N27/62G01N27/626
CPCA01K61/54A23K50/80A23K10/16G01N1/40G01N27/62Y02A40/81
Inventor 朱祖浩粟启仲张秋丰尹翠玲
Owner 自然资源部第四海洋研究所
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