Hydrazine detection
OwnerPatricia A. Taffe, Susan L. Rose-Pehrssoninventors
Life of this patent
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Abstract
A solution of various benzaldehyde derivatives dissolved in suitable solvents are used in impinger sampling or as a coating on substrates to provide passive, real-time visual colorimetric indication of the presence of hydrazine and its derivatives.
Claims15
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the step of exposing vanillin to hydrazine, said vanillin providing a colorimetric indication of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the step of exposing p-anisaldehyde to hydrazine, said p-anisaldehyde providing a colorimetric indicating of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the step of exposing 2,4-dimethoxybenzaldehyde to hydrazine, said 2,4-dimethoxybenzaldehyde providing a colorimetric indication of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the step of exposing 2,4-dihydroxybenzaldehyde to hydrazine, said 2,4-dihydroxybenzaldehyde providing a colorimetric indication of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the steps of:
- (a) providing a substrate coated with vanillin;
- and
- (b) exposing said coated substrate to hydrazine, said vanillin coating providing a colorimetric indication of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the steps of:
- (a) providing a substrate coated with P-anisaldehyde;
- and
- (b) exposing said coated substrate to hydrazine, said P-anisaldehyde coating providing a colorimetric indicating of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the steps of:
- (a) providing a substrate coated with 2,4-dimethoxybenzaldehyde;
- and
- (b) exposing said coated substrate to hydrazine, said 2,4-dimethoxybenzaldehyde coating providing a colorimetric indication of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the steps of:
- (a) providing a substrate coated with 2,4-dihydroxybenzaldehyde;
- and
- (b) exposing said coated substrate to hydrazine, said 2,4-dihydroxybenzaldehyde coating providing a colorimetric indicating of the presence of hydrazine and its derivatives.
A method for real-time colorimetric detection of hydrazine and its derivatives comprising the steps of:
- (a) providing a substrate coated with a solution containing vanillin at a concentration in the range of 0.004 grams per milliliter to 0.04 grams per milliliter;
- and
- (b) exposing the coated substrate to hydrazine, the vanillin providing a colorimetric indication of the presence of hydrazine and its derivatives.
Dependencies are inferred from the claim text.