公开(公告)号：US20170138853A1

公开(公告)日：2017-05-18

申请号：US15418885

申请日：2017-01-30

Applicant: METAWATER CO., LTD.

Inventor： Natsumi KONISHI ,  Eri HASEGAWA

IPC: G01N21/64

CPC classification number: G01N21/643 ,  G01N21/274 ,  G01N21/6428 ,  G01N33/182 ,  G01N2201/13 ,  Y10T436/193333

Abstract: A measuring method of bromate ion concentration includes a first fluorescence intensity measuring process including a process of passing hydrochloric acid through an anion exchanger to elute bromate ions adsorbed to the anion exchanger into the hydrochloric acid and a process of measuring the fluorescence intensity of the hydrochloric acid passed through the anion exchanger, a second fluorescence intensity measuring process including a process of passing a hydrochloric acid solution containing a fluorescent substance whose fluorescence intensity changes due to coexistence of bromate ions through an anion exchanger to elute bromate ions adsorbed to the anion exchanger into the hydrochloric acid solution and a process of measuring the fluorescence intensity of the hydrochloric acid solution passed through the anion exchanger, and a calculation process determining the bromate ion concentration in the water sample by using the difference between the fluorescence intensities of the hydrochloric acid solution and the hydrochloric acid.

公开(公告)号：US20140113381A1

公开(公告)日：2014-04-24

申请号：US14146073

申请日：2014-01-02

Applicant: Metawater Co., Ltd.

Inventor： Natsumi KONISHI ,  Eri HASEGAWA ,  Yoshiharu TANAKA ,  Shukuro IGARASHI ,  Takao OHTOMO

IPC: G01N31/22

CPC classification number: G01N31/22 ,  G01N21/274 ,  G01N21/64 ,  G01N21/6428 ,  G01N21/643 ,  G01N21/77 ,  G01N2021/6419 ,  G01N2021/6439 ,  G01N2021/7786 ,  Y10T436/20 ,  Y10T436/204998

Abstract: A method for measuring bromate ions includes: an adding step of adding a fluorescent substance whose fluorescence intensity changes by the coexistence of bromate ions to sample water; a measuring step of measuring the fluorescence intensity of the fluorescent substance; a difference calculating step of calculating a difference between the fluorescence intensity measured and a reference fluorescence intensity of reference sample water that contains no bromate ion; and a concentration calculating step of calculating bromate ion concentration from the calculated fluorescence intensity difference. The measuring step includes a step of measuring the fluorescence intensity at any one of a case where an excitation wavelength is 264 nm and an emission wavelength is 400 nm, a case where the excitation wavelength is 264 nm and the emission wavelength is 480 nm, and a case where the excitation wavelength is 300 nm and the emission wavelength is 400 nm.

Abstract translation: 测定溴酸根离子的方法包括：添加荧光强度随着溴酸根离子共存而变为样品水的荧光物质的添加工序; 测量荧光物质的荧光强度的测量步骤; 差分计算步骤，计算测量的荧光强度与不含溴酸根离子的参考样品水的参考荧光强度之间的差异; 以及从计算出的荧光强度差计算溴酸根离子浓度的浓度计算步骤。 测量步骤包括在激发波长为264nm，发射波长为400nm的情况下，激发波长为264nm，发射波长为480nm的情况下，测定荧光强度的步骤，以及 激发波长为300nm，发射波长为400nm的情况。