Methods for analysis of soil samples
First Claim
1. A method for determining the presence, concentration and/or volume of at least one component in a soil sample, comprising:
- a) adding at least one aqueous solution to a soil sample;
b) adding at least one complexing agent to the mixture of step (a); and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein steps (a) and (b) prepare the sample in a manner that is suitable for NIR spectrometry.
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Abstract
The present invention relates to methods for the preparation and analysis of soil samples to determine the presence, concentration and/or volume of at least one component in a soil sample, including preparation steps of extracting the component from the sample by use of aqueous solution and, depending on the element, adding a complexing agent to the aqueous solution and soil mixture. The resulting mixture is then able to be analysed via NIR or UV/Vis spectrometry as the component, not normally detectable via NIR or UV/Vis spectrometry, is converted into an accurately measurable form. The methods of the present invention may be used to obtain a test results on site and within a time period of 10 to 45 minutes rather than a time period of days using present methods.
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Citations
28 Claims
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1. A method for determining the presence, concentration and/or volume of at least one component in a soil sample, comprising:
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a) adding at least one aqueous solution to a soil sample;
b) adding at least one complexing agent to the mixture of step (a); and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein steps (a) and (b) prepare the sample in a manner that is suitable for NIR spectrometry. - View Dependent Claims (19, 20)
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2. A method for determining the presence, concentration and/or volume of at least one component in a soil sample, comprising:
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a) adding at least one aqueous solution to a soil sample;
b) adding at least one complexing agent to the mixture of step (a); and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed under pressure for a time period of 30 to 45 seconds, and further wherein steps (a) and (b) prepare the sample in a manner that is suitable for NIR spectrometry.
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3. A method for determining the presence, concentration and/or volume of at least one component in a soil sample, comprising:
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a) adding at least one aqueous solution to a soil sample;
b) adding at least one complexing agent to the mixture of step (a); and
c) analysing the result of step (b) via UV/Vis spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein steps (a) and (b) prepare the sample in a manner that is suitable for UV/Vis spectrometry.
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4. A method for determining the presence, concentration and/or volume of at least one component in a soil sample, comprising:
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a) adding at least one aqueous solution to a soil sample;
b) adding at least one complexing agent to the mixture of step (a); and
c) analysing the result of step (b) via UV/Vis spectrometry;
wherein step (a) is completed under pressure for a time period of 30 to 45 seconds, and further wherein steps (a) and (b) prepare the sample in a manner that is suitable for UV/Vis spectrometry.
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5. A method for determining the presence, concentration and/or volume of at least one component in a soil sample, comprising:
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a) adding at least one aqueous solution to a soil sample;
b) adding at least one complexing agent to the mixture of step (a); and
c) analyzing the result of step (b) via NIR or UV/Vis spectrometry;
wherein step (a) is completed within 10 minutes or is completed under pressure for a time period of 30 to 45 seconds, and further wherein steps (a) and (b) prepare the sample in a manner that is suitable for NIR or UV/Vis spectrometry. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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21. The method for determining the presence, concentration and/or volume in a soil sample of properties selected from the group consisting of:
- sulphur, carbon, pH, and combinations thereof, comprising;
a) adding at least one aqueous solution to a soil sample; and
b) analysing the result of step (a) via NIR spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein step (a) prepares the sample in a manner suitable for NIR spectrometry.
- sulphur, carbon, pH, and combinations thereof, comprising;
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22. A method for determining the presence, concentration and/or volume in a soil sample of properties selected from the group consisting of:
- sulphur, carbon, pH, and combinations thereof, comprising;
a) adding at least one aqueous solution to a soil sample; and
b) analysing the result of step (a) via NIR spectrometry;
wherein step (a) is completed under pressure for a time period of 30 to 45 seconds, and further wherein step (a) prepares the sample in a manner suitable for NIR spectrometry.
- sulphur, carbon, pH, and combinations thereof, comprising;
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23. A method for determining the presence, concentration and/or volume in a soil sample of properties selected from the group consisting of:
- sulphur, carbon, pH, and combinations thereof, comprising;
a) adding at least one aqueous solution to a soil sample; and
b) analysing the result of step (a) via UV/Vis spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein step (a) prepares the sample in a manner suitable for UV/Vis spectrometry.
- sulphur, carbon, pH, and combinations thereof, comprising;
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24. A method for determining the presence, concentration and/or volume in a soil sample of properties selected from the group consisting of:
- sulphur, carbon, pH, and combinations thereof, comprising;
a) adding at least one aqueous solution to a soil sample; and
b) analysing the result of step (a) via UV/Vis spectrometry;
wherein step (a) is completed under pressure for a time period of 30 to 45 seconds, and further wherein step (a) prepares the sample in a manner suitable for UV/Vis spectrometry.
- sulphur, carbon, pH, and combinations thereof, comprising;
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25. A method for determining the concentration of potassium in a soil sample, comprising:
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a) adding an aqueous solution of sodium bicarbonate to a soil sample;
b) adding sodium tetraphenylborate (NaTPB) to the mixture from step (a); and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein steps (a) and (b) prepare the sample in a manner suitable for NIR spectrometry.
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26. A method for determining the concentration of potassium in a soil sample, comprising:
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a) adding an aqueous solution of sodium bicarbonate to a soil sample;
b) adding sodium tetraphenylborate (NaTPB) to the mixture from step (a); and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed under pressure for a time period of 30 to 45 seconds, and further wherein steps (a) and (b) prepare the sample in a manner suitable for NIR spectrometry.
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27. A method for determining the concentration of Olsen P phosphorus in a soil sample, comprising:
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a) adding an aqueous solution of sodium bicarbonate to a soil sample;
b) adding ammonium molybdate (Olsen P colouring agent) to the mixture from step (a) and degassing the sample; and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed within 10 minutes, and further wherein steps (a) and (b) prepare the sample in a manner suitable for NIR spectrometry.
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28. A method for determining the concentration of Olsen P phosphorus in a soil sample, comprising:
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a) adding an aqueous solution of sodium bicarbonate to a soil sample;
b) adding ammonium molybdate (Olsen P colouring agent) to the mixture from step (a) and degassing the sample; and
c) analysing the result of step (b) via NIR spectrometry;
wherein step (a) is completed under pressure for a time period of 30 to 45 seconds, and further wherein steps (a) and (b) prepare the sample in a manner suitable for NIR spectrometry.
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Specification