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Method for simultaneously determining iodine, boron, tin and germanium elements in soil

A soil and element technology, applied in the field of simultaneous determination of iodine, tin and germanium in soil, and boron, can solve the problems of failing to meet the requirements of multi-target detection, unable to meet the determination of tin elements, and high detection limits, and achieve work efficiency. High and low detection limit, the effect of accurate measurement results

Active Publication Date: 2016-07-13
广西壮族自治区地质矿产测试研究中心
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Problems solved by technology

However, the sensitivity of inductively coupled plasma emission spectrometry is low, and the detection limits of boron and iodine are too high, which is far from meeting the requirements of multi-target detection, and it is also unable to meet the determination of tin in soil.

Method used

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  • Method for simultaneously determining iodine, boron, tin and germanium elements in soil
  • Method for simultaneously determining iodine, boron, tin and germanium elements in soil
  • Method for simultaneously determining iodine, boron, tin and germanium elements in soil

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Embodiment 1

[0032] A method for simultaneously measuring iodine, boron, tin and germanium in soil, comprising raw material pretreatment, measuring solution preparation, working curve drawing, and determination of each element content in soil; the specific steps are as follows:

[0033] (1) Raw material pretreatment: Weigh 0.4000g of the soil to be tested as a sample, add the sample into a corundum crucible, add 2.0g of sodium peroxide, stir well, and place the crucible on a refractory plate preheated to 500°C Place the crucible on top for 5 minutes, then transfer it to a muffle furnace that has been heated to 500°C, raise the temperature to 750°C, keep it warm for 10 minutes, take it out and cool it to 100°C, put the crucible into the beaker, and add 80mL of hot water (hot water temperature 80°C ), then add 5mL of internal standard solution, stir evenly, remove the crucible to obtain the analyte;

[0034] (2) Preparation of measurement solution: take 3.5mL of the test substance and place ...

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Abstract

The invention discloses a method for simultaneously determining iodine, boron, tin and germanium elements in soil. The method comprises the following steps of pre-treating raw materials, preparing a determination solution, drawing a working curve and determining the content of each element in the soil, wherein the step of pre-treating the raw materials comprises the step of pre-treating with sodium oxide; a citric acid solution and cation resin are added into the pre-treated sample to prepare the determination solution; the obtained determination solution is determined by adopting an inductively coupled plasma-mass spectrometry. The method disclosed by the invention can be used for simultaneously determining the plurality of elements including iodine, boron, tin and germanium in the soil, and is high in working efficiency and simple to operate; the inductively coupled plasma-mass spectrometry is used for determining; compared with an inductively coupled plasma emission spectroscopy, the method has the advantages of relatively high sensitivity, relatively low detection limit, relatively strong anti-interference capability, relatively high precision and the like. The detection limits of the detected elements that the iodine is 0.10Mug / g, the boron is 0.92Mu g / g, the tin is 0.29Mu g / g and the germanium is 0.02Mug / g, and are lower than the detection limits of the inductively coupled plasma emission spectroscopy.

Description

technical field [0001] The invention relates to a method for measuring trace elements in soil, in particular to a method for simultaneously measuring iodine, boron, tin and germanium in soil by using inductively coupled plasma mass spectrometry (ICP-MS). Background technique [0002] Soil is the most basic and important natural resource for human survival and development. Due to the long period of human production activities, especially the rapid development of modern industry, the surface soil has generally been polluted to varying degrees. Therefore, the determination of the content of constant, secondary and trace elements in soil is an important basic work, which is of great significance to ecological environment monitoring, regional resource research, agricultural economic regulation and sustainable development planning of national economy. [0003] The trace element iodine (I) in the soil is an essential micronutrient element for humans and animals. The abundance of io...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N27/626
CPCG01N27/62
Inventor 阳国运唐裴颖张洁叶秋何雨珊覃盛
Owner 广西壮族自治区地质矿产测试研究中心
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