Optical-chemical sensor
First Claim
1. An optical-chemical sensor which is suitable for the continuous and discontinuous determination by luminescence optics of the concentration of chloride in an aqueous sample and which comprises a luminescence indicator (I) and a polymer (H) carrying the luminescence indicator (I), characterized in that the luminescence indicator (I) is a non-lipophile acridine or bisacridine compound and the polymer (H) is a linear-chain hydrophile polymer soluble in an organic solvent, the luminescence indicator (I) being immobilized in the polymer (H).
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Abstract
An optical-chemical sensor which is suitable for the continuous and discontinuous determination by luminescence optics of the concentration of chloride in an aqueous sample and which comprises a luminescence indicator (I) and a polymer (H) carrying the luminescence indicator (I) is characterized in that the luminescence indicator (I) is a non-lipophile acridine or bisacridine compound and the polymer (H) is a linear-chain hydrophile polymer soluble in an organic solvent, whereby it is possible to excite the sensor by commercially available LEDs, to manufacture very large numbers thereof at a moderate cost and in a reproducible way and, preferably, to use it for the determination of physiological chloride concentrations and the sensor furthermore has a wide dynamic measuring range for the determination of chloride; a high sensitivity, stability and reproducibility; a high selectivity for chloride; and a low pH cross-sensitivity.
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12 Claims
- 1. An optical-chemical sensor which is suitable for the continuous and discontinuous determination by luminescence optics of the concentration of chloride in an aqueous sample and which comprises a luminescence indicator (I) and a polymer (H) carrying the luminescence indicator (I), characterized in that the luminescence indicator (I) is a non-lipophile acridine or bisacridine compound and the polymer (H) is a linear-chain hydrophile polymer soluble in an organic solvent, the luminescence indicator (I) being immobilized in the polymer (H).
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8. A process for the production of an optical-chemical sensor which is suitable for the continuous and discontinuous determination by luminescence optics of the concentration of chloride in an aqueous sample and which comprises a luminescence indicator (I) and a polymer (H) carrying the luminescence indicator (I), characterized in that
a non-lipophile luminescence indicator on the basis of an acridine or bisacridine compound is used as luminescence indicator (I) and a linear-chain hydrophile polymer soluble in an organic solvent is used as polymer (H), wherein a solution of the luminescence indicator (I) is produced and the solution is brought into contact with the linear-chain hydrophile polymer (H), the luminescence indicator (I) diffusing into the linear-chain hydrophile polymer (H).
Specification