Abstract: A method of continuous flow analysis is provided which enables a plurality of color-forming components contained in a sample to be simultaneously analyzed with utmost ease. The method involves irradiating the sample with a measuring light which generates a wavelength having absorption bands with respect to such color-forming components, measuring the absorbance of each of the components in a color-formed state while the components are being adjusted stepwise in their color-forming state, and comparing the resultant absorbances of the components with each other. Preferably, a plurality of measuring cells are used to stepwise adjust the sample in its color-forming state, the measuring cells being connected in tandem such that a color former and/or a masking agent are incorporated in the sample while the latter is being caused to successively flow through these cells so that the sample is adjusted in its color-forming state at each of the measuring cells and measured in respect of its absorbances.

Abstract: A flow injection analytical apparatus which is capable of continuously performing flow analysis of a sample, produces precipitates during the flow through a capillary. The precipitation separation type continuous flow analytical apparatus has a sample injection portion, a reagent addition portion and an analytical portion which are integrally communicated by a measurement pipeline to form a measurement system. A precipitant addition portion and a filtration portion are provided between the sample injection portion and the reagent addition portion in order to continuously perform production and filtration of precipitates during flow of the sample solution to the reagent addition portion.

Abstract: A continuous flow analyzing method and an apparatus for carrying out the analyzing method wherein a sample is injected in a continuously flowing carrier and the sample is introduced into a detector by the carrier to thereby perform a quantitative analysis contained in the sample. In the method the sample to be analyzed is filled into a sample introduction switchover valve (SISV); a portion of the sample from the SISV is injected into the carrier and an analysis of this sample is conducted to obtain a detection peak for the analyzed sample. These steps are repeated and the sample is continuously analyzed by, in the case where a detection peak obtained in the detector is under an optimum analysis range, increasing an injection amount of the sample, and in the case where the detection peak obtained in the detector is over the optimum range, decreasing the injection amount of the sample. Adjustment of the detection peak is repeated until the detection peak reaches the optimum analysis range.

Abstract: This invention provides a measuring method and a device suitable for the quantitative analysis of metal elements contained in body fluids comprising:using the flow injection method for reacting a sample with a reagent in a tubule and analyzing the reacted solution. In essence, the present invention provides;a method for introducing a body fluid sample and a protein release reagent into a carrier solution, reacting the two solutions with one another in the tubule in order to liberate the protein contained in the body fluid sample, followed by introducing the reacted solution into a quantitative analysis means for determining and measuring the concentration of target metal(s) contained in the body fluid; anda quantitative analysis device for performing the foregoing method.

Abstract: This invention provides a measuring method and a device suitable for the quantitative analysis of metal elements contained in body fluids comprising:using the flow injection method for reacting a sample with a reagent in a tubule and analyzing the reacted solution. In essence, the present invention provides;a method for introducing the protein liberated by the reaction of body fluid sample and protein-release reagent into a separating membrane for preventing the passage of protein to separate and remove the liberated protein, and then introducing the reacted solution into a quantitative analysis means for determining and measuring the concentration of target metal contained in the body fluid; anda quantitative analysis device for performing the foregoing method.

Abstract: This invention provides a measuring method for the quantitative flow injection analysis of metal elements contained in body fluids comprising introducing the protein liberated by the reaction of body fluid sample and protein-precipitating reagent into a separating membrane for preventing the passage of protein to separate and remove the liberated protein, and then introducing the reacted solution into quantitative analysis means for determining and measuring the concentration of target metal contained in the body fluid.

Abstract: The present invention discloses an Fluorescence X-ray spectrometry method and device for determining the type and quantity of metals elements in metal and metal alloy samples, particularly precious metal and precious metal alloy samples. The invention provides a method and an apparatus in which an object to be analyzed is positioned so that an X-ray beam that will be generated will coincide with a measurement point on the surface of the object where it is desired that the analysis be carried out. The measurement point is exposed to an X-ray beam having a diameter of 0.1 to 5 mm, causing fluorescence X-ray radiation to be generated which is sampled. Spectral analysis of the captured fluorescence X-ray radiation is then carried out wherein the intensity of selected peaks corresponding to target elements is determined, whereby the relative composition of selected elements can be calculated, thus providing selective quantitative analysis for target elements at the measurement point.