Method for detecting uranium content of plant body

A technology of uranium content and plant body, applied in the field of analytical chemistry, can solve problems such as laborious, time-consuming and troublesome, and achieve the effects of short detection time, simple method and wide application range

Inactive Publication Date: 2013-01-16
EAST CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, the detection of uranium content in plants generally adopts ICP-AES, ICP-MS and ot...

Method used

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  • Method for detecting uranium content of plant body
  • Method for detecting uranium content of plant body
  • Method for detecting uranium content of plant body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take uranium ghost needles ( Bidenspilosa Linn.) as an example, the detailed experimental operation process is as follows:

[0021] (1) Pretreatment of ghost needle grass

[0022] Harvest the spruces (including roots, stems, leaves, flowers, and fruits), wash and dry them, then dry them in an oven at 105°C for 4 hours to constant weight, and mash the dried samples with a tissue grinder. Weighing (m 1 : 25.309g), the crushed sample was ashed on a griddle and weighed (m 2 : 3.216g), weigh the sample after ashing (m 3 : 2.849g), put it into a muffle furnace at 750°C for 30min, take out the cooled sample and weigh it (m 4 : 1.833g).

[0023] Weigh the pretreated sample (m 5 : 0.489g) in a 50ml crucible, the material of the crucible is polytetrafluoroethylene, add 1ml of water to moisten, add 1ml of 37.5% hydrochloric acid and 0.5ml of 30% hydrogen peroxide, heat and evaporate until no bubbles, then add 3ml of 85% phosphoric acid and 1ml of 47% hydrofluoric acid were...

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Abstract

The invention discloses a method for detecting the uranium content of a plant body. The method is characterized by comprising the following steps of: washing, air-drying and weighing a plant picked up from a uranium-contaminated environment, performing drying, ashing and calcination treatment, and detecting the uranium content of the plant by using microtitration with the reduction of ammonium vanadate by titanous chloride. The method is applied to the detection of a plant sample with the uranium content of 0.003 to 0.03 percent, covers the whole range of the uranium content of all plant bodies to be detected collected in a uranium mine area, is short in detection time, clear in titration endpoint, accurate in result, convenient, low in cost, wide in application range and significant for researches on the environmental management of the uranium mine area, and has a good detection effect; the uranium content of the plant is rapidly detected by using a titration method; apparatuses required by the detection method are simple; the interference of other heavy metals in the plant body to a detection process is avoided; and a standard solution recovery experimental research result shows that a detection error is only 3/100,000.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, and relates to a detection method for detecting uranium content in plants growing in a uranium-polluted environment, in particular to a method for detecting uranium content in plants. Background technique [0002] Plants that grow in the environment polluted by uranium all the year round absorb various metal ions in the soil, especially uranium ions, through the root system. The rapid, convenient, accurate and batch detection of uranium content in plants in uranium-polluted environment is not only closely related to the rapid screening of uranium-enriched plants in uranium-polluted environment, but also has a close relationship with phytoremediation in uranium-polluted environment Substrate improvement, vegetation reconstruction, and research on energy saving and emission reduction in uranium mining and metallurgy in the process of ecological restoration and reconstruction of mine abandoned la...

Claims

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Application Information

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IPC IPC(8): G01N21/79
Inventor 黄德娟
Owner EAST CHINA UNIV OF TECH
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