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Method for tracing heavy metal enrichment path of suspended bivalve mollusks

A technology for bivalve mollusks and heavy metals, applied in the field of heavy metal enrichment and tracer

Active Publication Date: 2020-10-02
自然资源部第四海洋研究所
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  • Summary
  • 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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  • Method for tracing heavy metal enrichment path of suspended bivalve mollusks
  • Method for tracing heavy metal enrichment path of suspended bivalve mollusks
  • Method for tracing heavy metal enrichment path of suspended bivalve mollusks

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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 a heavy metal enrichment path of suspended bivalve mollusks. The method comprises the step of marking a selected medium with stable silver isotopes so as to obtain a marking medium, wherein the medium is a medium contained in a bivalve mollusk culture environment; and the stable silver isotopes comprise silver 107 and silver 109. According to a scheme provided by the invention, the silver stable isotopes (107Ag, 109Ag) are applied to tracing the adsorption and enrichment conditions of the suspended bivalve mollusks to the silver in different environmental media (seawater, suspended particulate matters and baits), so the source of the silver entering the suspended bivalve mollusks is obtained; meanwhile, the distribution conditions of the silverwith different sources in different tissues in the suspended bivalve mollusks are obtained. According to the scheme provided by the invention, the defect that traceability cannot be achieved by utilizing a single isotope is overcome; the silver stable isotopes which are simple in isotope composition and easily available are adopted as a tracer agent; and a technical support is provided for 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 Applications(China)
IPC IPC(8): A01K61/54A23K10/16A23K50/80G01N1/40G01N27/62
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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