Anionic ion pairing compositions having volatile combustion products with O or S or halogen atoms or their combinations as heteroatoms for use with gas-phase or vapor-phase element-specific detectors
First Claim
1. An anionic ion pairing composition comprising:
- at least one anion; and
at least one counterion, where the anions and counterions have volatile combustion products including O or S or halogen atoms or combinations thereof as their only heteroatoms.
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Accused Products
Abstract
Non-interfering, anionic ion pairing reagents, anionic ion pairing reagent systems, or in situ formed anionic pairing ion and in situ formed anionic pairing ion systems having volatile combustion products with O or S or halogen atoms or combinations thereof as their only heteroatoms are disclosed along with their use in analytical techniques utilizing element specific detectors. The anionic ion pairing reagents, anionic ion pairing reagent systems, or in situ formed anionic pairing ion and in situ formed anionic pairing ion systems have volatile combustion products with O or S or halogen atoms as their only heteroatoms. Also, analytical techniques are disclosed using these anionic ion pairing reagents, anionic ion pairing reagent systems, or in situ formed anionic pairing ion and in situ formed anionic pairing ion systems.
8 Citations
27 Claims
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1. An anionic ion pairing composition comprising:
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at least one anion; and
at least one counterion, where the anions and counterions have volatile combustion products including O or S or halogen atoms or combinations thereof as their only heteroatoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An anionic ion pairing composition for use in element-specific detection systems comprising a solution comprising:
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a solvent;
a anion selected from the group consisting of carboxylate ions, phenolate ions, sulfonate ions, organic sulfate ions and mixtures or combinations thereof; and
a counterion selected from the group consisting of oxonium ions, sulfonium ions, sulfoxonium ions and mixtures or combinations thereof, where the anion and counterion and the solvent have volatile combustion products including O or S or halogen atoms or combinations thereof as their only heteroatoms. - View Dependent Claims (10)
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11. An anionic ion pairing composition for use in element-specific detection systems comprising:
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a solvent;
a plurality of anions selected from the group consisting of carboxylate ions, phenolate ions, sulfonate ions, organic sulfate ions and mixtures or combinations thereof; and
a plurality of counterions selected from the group consisting of oxonium ions, sulfonium ions, sulfoxonium ions and mixtures and combinations thereof, where the anions and counterions and the solvent have volatile combustion products including O or S or halogen atoms or combinations thereof as their only heteroatoms. - View Dependent Claims (12, 14, 15, 16, 17, 18, 20, 21, 22, 23, 25, 26, 27)
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13. An apparatus for detecting an analyte comprising:
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a separation component where a sample is separated into its components, where the sample comprises at least one analyte and at least one anion and at least one counterion, where the anions and counterions have volatile combustion products including O or S or halogen atoms or combinations thereof as their only heteroatoms and where at least one combustion product of the analyte is detectable;
a combustion zone where the sample is converted to its corresponding combustion products;
a gas-phase or vapor-phase element-specific detector (ESD) capable of detecting the at least one analyte combustion product.
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19. A method for analyzing an analyte comprising the steps of:
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introducing a sample comprising at least one analyte and at least one anion and at least one counterion into a combustion zone, where the anions and counterions have volatile combustion products including O or S or halogen atoms or combinations thereof as their only heteroatoms;
converting the sample, in the combustion zone, into its corresponding volatile combustion products including at least one analyte combustion product;
measuring the at least one analyte combustion product with a gas-phase or vapor-phase element-specific detector to produce a detector signal; and
determinating an analyte concentration in the sample from the detector signal.
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24. A method for forming an anionic ion pairing reagent in situ comprising the steps of:
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dissolving an acid form of an anion in a solvent to form a solution, where the acid form of the anion has volatile combustion products including O or S or halogen atoms or mixtures and combinations thereof as their only heteroatoms;
adding an amount of a base form of a counterion to the solution, where the base form of the counterion has volatile combustion products including O or S or halogen atoms or mixtures and combinations thereof as their only heteroatoms, and where the amount is sufficient to convert substantially all of the acid form of the anion to its corresponding anion to form an in situ formed anionic ion pairing reagent; and
adding a sample comprising at least one analyte to the solution containing the in situ formed anionic ion pairing reagent.
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Specification