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Detection method for determining content of lead, cadmium, chromium, copper, zinc and nickel in marine sediments by inductively coupled plasma mass spectrometry

A marine sediment and detection method technology, applied in the detection field of chromium, copper, zinc, lead, cadmium and nickel content in marine sediment, can solve the problems affecting the detection efficiency of relevant units, business improvement and development speed, idle assets and resources Waste and other issues, to achieve the effect of preventing and controlling pollution damage, less interference, and high speed

Inactive Publication Date: 2019-10-11
福建省农业科学院农业质量标准与检测技术研究所
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Problems solved by technology

However, the national, industrial and local standards for the detection of metal elements by inductively coupled plasma mass spectrometry have not kept pace with the development of science and technology for timely follow-up formulation and implementation, making it impossible for testing units to use inductively coupled plasma mass spectrometry to quickly complete the detection task. It has caused major assets to be idle and resources to be wasted, and has seriously affected the detection efficiency, business improvement and development speed of relevant units. Therefore, it is an urgent task to develop, formulate and implement standards for the determination of metal elements by inductively coupled plasma mass spectrometry.

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  • Detection method for determining content of lead, cadmium, chromium, copper, zinc and nickel in marine sediments by inductively coupled plasma mass spectrometry
  • Detection method for determining content of lead, cadmium, chromium, copper, zinc and nickel in marine sediments by inductively coupled plasma mass spectrometry
  • Detection method for determining content of lead, cadmium, chromium, copper, zinc and nickel in marine sediments by inductively coupled plasma mass spectrometry

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[0023] 1 principle

[0024] After the sample is digested by microwave, the sample solution is introduced into the inductively coupled plasma mass spectrometer. For an ion to be measured with a certain mass-to-charge ratio, the mass spectrometer signal response is proportional to the number of ions entering the mass spectrometer, and the concentration of elements in the sample is determined by measuring the signal count of the mass spectrometer. The element content was calculated by the standard curve method.

[0025] 2 Reagents and materials

[0026] Unless otherwise stated, the reagents used in this method were of superior grade. The experimental water complies with the provisions of the first-class water in GB / T 6682.

[0027] Warning: All kinds of strong acids should be handled with care. Dilute and take them in a fume hood. When using perchloric acid, be careful not to burn it dry, and be careful of explosion.

[0028] 2.1 Hydrofluoric acid solution, ρ(HF)=1.49g / mL.

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Abstract

The invention provides a detection method for determining content of lead, cadmium, chromium, copper, zinc and nickel in marine sediments by an inductively coupled plasma mass spectrometry. The methodcomprises the following steps of preparation of a standard using solution, preparation of a standard solution, preparation of a test solution, reagent blank solution, determination and the like. Themethod has the characteristics of being simple in spectral line, high in sensitivity, fast in speed, less in interference and the like, and quantitative determination of the six elements can be simultaneously realized within a few minutes. The method can provide a standard detection method for determining the content of heavy metals in the marine sediments for the society, research results providea scientific technical standard and technical basis for the quality supervision of government departments, and the method has important academic value and application prospect in the aspects of accelerating the marine environment, protecting marine resources, preventing pollution damage and the like.

Description

technical field [0001] The invention relates to a method for detecting the contents of lead, cadmium, chromium, copper, zinc and nickel in marine sediments, in particular to an inductively coupled plasma mass spectrometry method for the determination of lead, cadmium, chromium, copper, zinc, Determination of nickel content. Background technique [0002] With the impact of human beings on the environment, many heavy metal pollutants are discharged into ocean waters, and the adsorption and release of heavy metals in ocean sediments will affect the form distribution, migration, transformation and fate of heavy metals in the ocean. As a "reservoir" of pollutants, marine sediments play an important role in both the transport and storage of pollutants. The continuous accumulation of heavy metals and trace element pollutants in sediments will have a toxic effect on benthic organisms or organisms that depend on sediments for survival, so sediments are being increasingly used to eva...

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Application Information

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IPC IPC(8): G01N27/62G01N1/44G01N27/626
CPCG01N27/62G01N1/44
Inventor 罗钦罗土炎潘葳黄锐敏黄敏敏饶秋华吴建衍
Owner 福建省农业科学院农业质量标准与检测技术研究所
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