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US 9,726,655 B2Granted
Selective ion chemistry for nitrate detection
AssigneeMorpho Detection, Inc.
InventorsJack A. Syage, Andrey N. Vilkov, Sheng-Suan Cai
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Abstract
The present disclosure is directed to methods and systems for detecting a chemical substance. The methods and systems include mixing a sample of a substance of interest with an additive and then producing an adduct using an ionization source. The systems and methods further include performing a spectrometric analysis of the adduct and identifying the sample using comparative spectrometric data.
Claims20
A method for detecting a chemical substance, said method comprising:
- collecting a sample comprising a substance of interest;
- mixing the sample and at least one additive within a reaction chamber, wherein the at least one additive includes at least one of an organic acid and an organic acid ester;
- using an ionization source to produce an adduct from the sample and the at least one additive, wherein the adduct includes the at least one additive and a dissociated ion from the sample;
- performing a spectrometric analysis of the adduct;
- and,
- identifying the substance of interest using spectrometric data.
3 more elements
A substance detection system comprising:
- a reaction chamber housing defining a reaction chamber therein;
- a sample supply system coupled in flow communication with said reaction chamber, said sample supply system configured to channel at least a portion of a sample comprising at least one substance of interest to said reaction chamber;
- an additive system coupled in flow communication with said reaction chamber, said additive system configured to channel at least one additive to said reaction chamber, wherein the at least one additive includes at least one of an organic acid and an organic acid ester;
- an ionization source coupled in flow communication with said reaction chamber, said ionization source configured to produce an adduct from the at least a portion of a sample comprising at least one substance of interest and the at least one additive including at least one of an organic acid and an organic acid ester, wherein the adduct includes the at least one additive and a dissociated ion from the sample;
- a spectrometric analysis device coupled in flow communication with said reaction chamber, said spectrometric analysis device configured to perform a spectrometric analysis of the adduct;
- and,
- a processor configured to identify at least one substance of interest using spectrometric data.
4 more elements
A method for distinguishing different NO3− ion structures, said method comprising:
- collecting a sample comprising a nitro-based substance;
- mixing the sample and at least one additive within a reaction chamber, wherein the at least one additive includes at least one of an organic acid and an organic acid ester;
- using an ionization source to produce an adduct from the mixture of the sample and the at least one additive, wherein the adduct includes the at least one additive and a dissociated NO3− ion from the sample;
- performing a spectrometric analysis of the adduct;
- and,
- identifying an NO3− ion structure using spectrometric data.
3 more elements
Dependencies are inferred from the claim text.