Abstract:
PROBLEM TO BE SOLVED: To provide a method for recovering heavy metals by which the variation in heavy metal recovery rate among samples can be suppressed.SOLUTION: A mixture of a sample and a chelating agent capable of chelating with a heavy metal is prepared. A complex between a heavy metal being in the sample and the chelating agent is formed in the presence of a masking agent for a thiol group in the mixture. The heavy metal in the sample is recovered by recovering the complex. By this method, a heavy metal can be recovered with suppressing the variation in the recovery rate among samples. The chelating agent preferably is 1,5-diphenyl-3-thiocarbazone (dithizone). As the masking agent, N-ethylmaleimide, iodoacetamide, iodoacetic acid, or the like can be used.
Abstract:
PROBLEM TO BE SOLVED: To provide a new test piece for measurement of creatinine. SOLUTION: A porous material contains a compound represented by Formula (1), and a metal and a buffering agent which form a coloration complex with the compound. The coloration complex formed by the compound and metal is optically measured, and the degree of formation blocking of the coloring complex by creatinine is measured, thus measuring the amount of creatinine. In the expression (1), R 1 indicates H, SO 3 X, and COOX; R 4 and R 6 indicate OH, SO 3 X, and COOX, where each may be the same or different; R 2 , R 3 , R 5 , and R 7 indicate H, OH, Cl, Br, I, NO 2 , NO, and CH 3 , where each may be the same or different; X in R 1 , R 4 , and R 6 indicates H, Na, K, and NH 4 , where each may be the same or different. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a new test piece for creatinine measurement. SOLUTION: A compound of formula (1) is included in a porous material to form the test piece for creatinine measurement. The porous material preferably contains a metal forming a color complex with the compound and a buffer agent. Within the test piece, the color complex formed by the compound and the metal is optically measured to determine the degree of inhibition of formation of the color complex by creatinine, whereby the creatinine amount is measured. COPYRIGHT: (C)2004,JPO
Abstract:
The present invention relates to a technique of measuring a protein based on a degree of coloring in a liquid sample mixed with a protein measurement indicator. In the present invention, information reflecting creatinine concentration in the liquid sample is obtained, and then an influence quantity caused by creatinine to the protein concentration measurement is eliminated based on the information.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid reagent capable of specifically and simply measuring a very small amount of albumin in a liquid sample such as urine or the like inclusively of modified albumin, which is easily measured by immunoassay, with high sensitivity equal to immunoassay. SOLUTION: The liquid reagent for measuring a very small amount of albumin in the liquid sample contains a buffer solution, an albumin measuring indicator having a chemical structure represented by a chemical formula 1 and a water-soluble polymer such as hydroxypropyl cellulose or the like being a sensitizer. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technology, capable of facilitating authenticity determination of an analysis tool used for sample analysis processing, and thereby guaranteeing reliability of analysis results. SOLUTION: An identification device for identifying an analysis tool having a reagent part, used for sample analysis processing, and having further a marker part for identification formed by using an invisible material, includes an irradiator for irradiating the marker part for identification with light, a light receiver for receiving light emitted from the invisible material forming the marker part for identification exposed to irradiation light by the irradiator, and an identification unit for identifying the analysis tool based on a light reception result by the light receiver. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid reagent reacting with various proteins containing albumin when the total protein in a liquid sample such as a biosample or the like is measured on the basis of the theory of a coloring matter bonding method corresponding to screening inspection to measure the total protein with extremely high sensitivity. SOLUTION: The liquid reagent for measuring the total protein in the liquid sample contains a protein measuring indicator having a chemical structure represented by the chemical formula 1, a formic acid buffer solution the pH of which is adjusted to 1.0-3.5 and a nonionic surfactant. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid reagent capable of specifically and simply measuring a very small amount of albumin in a liquid sample such as urine or the like inclusively of modified albumin (immunological unresponsive albumin), which is not measured by immunoassay, with high sensitivity equal to the immunoassay. SOLUTION: The liquid reagent for measuring a very small amount of albumin in the liquid sample contains an indicator having a chemical structure represented by the chemical formula 1, at least one of a citric acid buffer solution adjusted to 1.0-3.0 in pH and an acetic acid buffer solution and a nonionic interface activator. COPYRIGHT: (C)2008,JPO&INPIT