摘要:
Fluoroapatite dried particles are obtained by reacting hydroxyapatite primary particles having hydroxyl groups and hydrogen fluoride molecules having fluorine atoms so that at least one of hydroxyl groups of hydroxyapatite primary particles are substituted by the fluorine atoms of the hydrogen fluoride molecules. The fluoroapatite dried particles can exhibit superior acid resistance. Further, an adsorption apparatus using such fluoroapatite dried particles is provided.
摘要:
A method of producing fluoroapatite by using a calcium-based compound containing calcium, hydrogen fluoride and phosphoric acid is provided. The method can be produced fluoroapatite having improved acid resistance by reducing an amount of an impurity derived from a raw material to a low or very low level, and ability capable of separating a large amount of a protein due to a large specific surface area thereof. Further, fluoroapatite having high acid resistance and a large specific surface area is also provided. Furthermore, an adsorption apparatus using such fluoroapatite is also provided.
摘要:
A method of producing fluoroapatite powder by using a calcium compound, a phosphate compound, and a fluorine compound as a raw material is provided. The method comprises: preparing a slurry containing fluoroapatite produced from the raw material by using a wet process; applying an ultrasonic wave to the slurry; and drying the slurry to obtain the fluoroapatite powder mainly constituted of the fluoroapatite. The method provides fluoroapatite powder having improved particle strength. Further, an adsorption apparatus including the fluoroapatite powder is also provided.
摘要:
A method of producing a fluoroapatite is provided. The method comprises preparing a slurry containing a hydroxyapatite which has at least one hydroxyl group, preparing a hydrogen fluoride-containing solution containing a hydrogen fluoride, mixing the hydrogen fluoride-containing solution with the slurry to obtain a mixture to thereby adjust a pH of the mixture in the range of 2.5 to 5, and reacting the hydroxyapatite with the hydrogen fluoride in the mixture in a state that the pH of the mixture is adjusted within the above range to thereby obtain the fluoroapatite by substituting the at least one hydroxyl group of the hydroxyapatite with fluorine atom of the hydrogen fluoride. The method can produce the fluoroapatite having improved acid resistance by reducing an impurity, such as ammonia, derived from a raw material to a low or very low level. Further, a fluoroapatite having high acid resistance is also provided. Furthermore, an adsorption apparatus using such a fluoroapatite is provided.
摘要:
A method of separating a fluorescent protein from a sample containing a plurality of proteins containing the fluorescent protein is provided. The method comprising: preparing a sample solution by adding the sample to a liquid; preparing an adsorption apparatus having a filling space for filling an adsorbent having a surface, wherein at least the surface of the adsorbent is constituted of a calcium phosphate-based compound and at least a part of the filling space is filled with the adsorbent; supplying the sample solution into the filling space of the adsorption apparatus so that the plurality of proteins are adsorbed by the adsorbent; supplying a phosphate elution buffer for eluting the fluorescent protein contained in the plurality of proteins from the adsorbent into the filling space of the adsorption apparatus to thereby obtain an eluant containing the fluorescent protein; and fractionating the eluant which is discharged from the filling space of the adsorption apparatus into a portion of the phosphate elution buffer containing the fluorescent protein and other portions thereof to thereby separate the fluorescent protein from the plurality of proteins. According to the present invention, it is possible to separate a large amount of the fluorescent protein from the sample containing the plurality of proteins containing the fluorescent protein with high purity by a simple operation.