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Determination method of p-aminoanisole and p-nitroanisole residues in soil

A technology of p-aminoanisole and p-nitroanisole, which is applied in the field of analysis and detection, can solve problems affecting the reproducibility and accuracy of test results, high desorption temperature, hardening, etc., and achieve high accuracy and low Detection limit, effect of reducing interference

Active Publication Date: 2017-09-05
URUMCHI PONY TESTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

p-aminoanisole and p-nitroanisole are semi-volatile organic compounds with boiling points between 170°C and 350°C. Compared with the thermal desorption process of volatile organic compounds, a significantly higher desorption temperature is required. If the soil filling method is used only, at a desorption temperature above 270°C, hardening and agglomeration will often occur, which will affect the reproducibility and accuracy of the test results

Method used

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  • Determination method of p-aminoanisole and p-nitroanisole residues in soil
  • Determination method of p-aminoanisole and p-nitroanisole residues in soil
  • Determination method of p-aminoanisole and p-nitroanisole residues in soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Using p-aminoanisole and p-nitroanisole as analytes, the detection of p-aminoanisole and p-nitroanisole in soil was carried out. Place the collected soil samples on tin foil, spread them flat, dry them in an oven at 40°C, grind them in a mortar, pass through a 60-mesh sieve, and mix them evenly; take 40g of uniform samples and mix them with 10g of pre-dried quartz sand Mix thoroughly at a weight ratio of 4:1, take 0.50 g of the mixed homogeneous sample and place it in two thermal desorption tubes, seal both sides with an appropriate amount of glass wool, compact the sample, and stick the copper mesh to the glass wool two times. Secondary sealed thermal desorption tubes, capped, record numbers S1 and S2, to be tested;

[0037] Take several standard soil samples of the same type, mix them with pre-dried quartz sand in the same proportion as the samples, take 0.5g of mixed standard samples and place them in a thermal desorption tube, seal both sides with an appropriate amo...

Embodiment 2

[0043]This embodiment is the addition and determination of p-aminoanisole and p-nitroanisole standard substances in the sample. Take the sample number S1 described in Example 1, place it in the thermal desorption tube, seal both sides with an appropriate amount of glass wool, compact the sample, and seal the thermal desorption tube with a copper mesh close to the glass wool for the second time. Add 5 μl of 100 μg / ml p-aminoanisole and p-nitroanisole mixed standard solution at the far end, that is, add 0.5 μg of standard substance, blow dry the solvent nitrogen, seal both ends, and record the number as S3, to be tested;

[0044] Take several standard soil samples of the same type, mix them with pre-dried quartz sand in the same proportion as the samples, take 0.5g of mixed standard samples and place them in a thermal desorption tube, seal both sides with an appropriate amount of glass wool, and compact the samples , use the copper mesh close to the glass wool to seal the therma...

Embodiment 3

[0047] Place the collected soil samples on tin foil, spread them flat, dry them in an oven at 40°C, grind them in a mortar, pass through a 60-mesh sieve, and mix them evenly; take 40g of uniform samples and mix them with 10g of pre-dried quartz sand Mix thoroughly at a weight ratio of 4:1, take 0.50 g of the mixed homogeneous sample and place it in two thermal desorption tubes, seal both sides with an appropriate amount of glass wool, compact the sample, and stick the copper mesh to the glass wool two times. Secondary sealed thermal desorption tubes, capped, record numbers S4 and S5, to be tested;

[0048] Take several standard soil samples of the same type, mix them with pre-dried quartz sand in the same proportion as the samples, take 0.5g of mixed standard samples and place them in a thermal desorption tube, seal both sides with an appropriate amount of glass wool, and compact the samples , use the copper mesh close to the glass wool to seal the thermal desorption tube for ...

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Abstract

The invention discloses a method for detecting the residual quantity of aminoanisole and paranitroanisole in soil and belongs to the field of analysis and detection. The method comprises the steps of sample preparation, thermal desorption-gas chromatograph-mass spectrometer measurement, and external standard method quantification. The method is suitable for measuring the residual quantity of aminoanisole and paranitroanisole in soil and is simple, convenient to use and environmentally friendly, detection limit is low, and accuracy is high.

Description

technical field [0001] The invention belongs to the field of analysis and detection, and relates to a method for detecting the residues of p-aminoanisole and p-nitroanisole in soil. Background technique [0002] With the overall improvement of our country's living standards and environmental protection awareness, people have put forward higher requirements for the living environment, shifting from the pursuit of comfort to safety and environmental protection. Therefore, whether the soil in close contact with humans is safe has become the focus of public attention. With urban expansion and urban planning, it has become a trend for chemical, printing and dyeing, pharmaceutical and other chemical companies to move out of the urban area. The old site of the industrial zone after the relocation will become a part of the future living area. The cumulative value of environmental pollutants in this area is a decisive factor. Whether it can be the key to living quarters, among which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 宋薇宋桂雪高俊海
Owner URUMCHI PONY TESTING TECH CO LTD
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