Abstract: Disclosed is a method for selectively binding and separating phosphate anions from a liquid medium by providing a cross-linked molecularly imprinted polymer including cross-linked chitosan having selective binding affinity for phosphate ions, phosphate containing molecules, or a combination of both.

Abstract: Disclosed is a method for selectively binding and separating phosphate anions from a liquid medium by providing a cross-linked molecularly imprinted polymer including cross-linked chitosan having selective binding affinity for phosphate ions, phosphate containing molecules, or a combination of both.

Abstract: Disclosed is a cross-linked molecularly imprinted polymer including cross-linked chitosan having selective binding sites for phosphate ions, phosphate containing molecules, or a combination of both.

Abstract: Disclosed is a cross-linked molecularly imprinted polymer including cross-linked chitosan having selective binding sites for phosphate ions, phosphate containing molecules, or a combination of both.

Abstract: A miniature system encapsulating a chemical transducer (sensor) prepared for a specific chemical, coupled with a miniature radio transmitter that relays information to a handheld receiver on the presence, or absence, of the target chemical. The system is deployed by several means, such as grenade, small rocket, large caliber rifle, drone plane, etc. The deployment device can hold many such sensor devices, each prepared for a particular toxic chemical, such as chlorine, hydrogen sulfide, or phosgene.

Abstract: Color photographic silver halide materials, especially color photographic papers, are processed effectively with reduced iron retention after bleaching with a biodegradable bleaching composition. Bleaching is accomplished using an iron chelate of a biodegradable chelating ligand in the presence of a polyphosphonic acid. This bleaching step is followed by fixing using a fixing composition that includes a fixing agent and a polycarboxylic acid.

Abstract: Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.

Abstract: Substituted hydroxylamine antioxidants can be prepared by reacting hydroxylamine or a mono-substituted hydroxylamine with an epoxide. The antioxidant reaction product is not removed from the reaction mixture, but is used without separation after combination with a color developer to provide a photographic color developer composition. The antioxidants are highly water soluble and thus exhibit no objectionable odor.

Abstract: Color photographic elements containing predominantly chloride (greater than or equal to 90 mole %) silver halide emulsions are effectively and rapidly processed using a peroxide bleaching solution which also contains at least 0.45 mol of chloride ion per liter of solution.

Abstract: Certain 2,1-benzisoxazol-3(1H)-ones are useful as antioxidants in photographic color developer compositions. These compounds are highly water soluble and are essentially odorless. In addition, they have extended shelf life. They are useful in processing silver halide color photographic elements having at least one incorporated dye forming coupler.

Abstract: Substituted hydroxylamine antioxidants can be prepared by reacting hydroxylamine or a mono-substituted hydroxylamine with an epoxide. The antioxidant reaction product is not removed from the reaction mixture, but is used without separation after combination with a color developer to provide a photographic color developer composition. The antioxidants are highly water soluble and thus exhibit no objectionable odor.

Abstract: Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.

Abstract: Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.

Abstract: An electrochemical cell for use in gas detection includes a cell body having an electrolyte cavity and a separate sensor cavity. The sensor cavity holds stacked sensor elements including a counter electrode, electrolyte mat, reference electrode and sensing electrode. A wick draws the electrolyte from the electrolyte cavity to the electrolyte mat. The sensing electrode closes off the sensor cavity and seals the counter and reference electrodes therein. The only gas which contacts the counter and reference electrodes is that which passes through the sensing electrode or is generated by the counter electrode and becomes dissolved in the electrolyte.

Abstract: Platinum black is electrochemically plated onto a conductive substrate, such as a platinum electrode, by positioning a counter electrode and the conductive substrate in a platinum(IV) ion plating solution. An electric current is passed through the counter electrode, substrate and plating solution for a predetermined period of time. The plating solution and conductive substrate are subjected to ultrasonic agitation while the plating is carried out. The plating solution preferably includes chloroplatinic acid and lead ion.