公开(公告)号：EP1567840A4

公开(公告)日：2007-11-14

申请号：EP03793353

申请日：2003-08-21

Applicant: UNIV COLUMBIA

Inventor： VAN GEEN ALEXANDER ,  PERONA PIETRO ,  MOSER CHRISTOPHE ,  PSALTIS DEMETRI

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01N21/27 ,  G01N21/35 ,  G01N21/78 ,  G01N33/18 ,  G01J3/46 ,  G01N21/25

CPC classification number: G01N33/182 ,  G01J3/02 ,  G01J3/0272 ,  G01J3/0283 ,  G01J3/0286 ,  G01J3/108 ,  G01J3/42 ,  G01N21/274 ,  G01N21/276 ,  G01N21/31 ,  G01N21/3577 ,  G01N21/78 ,  G01N2021/1751

Abstract: A field test-kit for analyzing arsenic concentration in water samples is provided. The kit includes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared light emitting diode is configured to direct a beam of light through a specimen. A photodetector diode measures the intensity of light passing through the specimen. The photodetector output voltages relate to the light absorbed in the specimen and are displayed on a liquid crystal display screen. The kit is assembled using off-the-shelf electronic and opto-electronic components that have low power requirements. Dry cell batteries or solar cells power the kit. To test for arsenic, molybdenum based chemistries are used to selectively bind and convert arsenates and phosphates in the specimen into molybdenum-blue color complexes. The light absorbance of a specimen with both arsenates and phosphates bound in molybdenum-blue color complexes is compared to that of a reference specimen in which phosphates but not arsenates are bound and converted. The differential light absorbance of the two specimens is used to arrive at a quantitative value for the arsenic concentration in the water sample.

公开(公告)号：WO2004019004A2

公开(公告)日：2004-03-04

申请号：PCT/US0326484

申请日：2003-08-21

Applicant: UNIV COLUMBIA ,  VAN GEEN ALEXANDER ,  PERONA PIETRO ,  MOSER CHRISTOPHE ,  PSALTIS DEMETRI

Inventor： VAN GEEN ALEXANDER ,  PERONA PIETRO ,  MOSER CHRISTOPHE ,  PSALTIS DEMETRI

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01N21/27 ,  G01N21/35 ,  G01N21/78 ,  G01N33/18 ,  G01N

CPC classification number: G01N33/182 ,  G01J3/02 ,  G01J3/0272 ,  G01J3/0283 ,  G01J3/0286 ,  G01J3/108 ,  G01J3/42 ,  G01N21/274 ,  G01N21/276 ,  G01N21/31 ,  G01N21/3577 ,  G01N21/78 ,  G01N2021/1751

Abstract: A field test-kit for analyzing arsenic concentration in water samples is provided. The kit includes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared light emitting diode is configured to direct a beam of light through a specimen. A photodetector diode measures the intensity of light passing through the specimen. The photodetector output voltages relate to the light absorbed in the specimen and are displayed on a liquid crystal display screen. The kit is assembled using off-the-shelf electronic and opto-electronic components that have low power requirements. Dry cell batteries or solar cells power the kit. To test for arsenic, molybdenum based chemistries are used to selectively bind and convert arsenates and phosphates in the specimen into molybdenum-blue color complexes. The light absorbance of a specimen with both arsenates and phosphates bound in molybdenum-blue color complexes is compared to that of a reference specimen in which phosphates but not arsenates are bound and converted. The differential light absorbance of the two specimens is used to arrive at a quantitative value for the arsenic concentration in the water sample.

Abstract translation: 提供了一种用于分析水样中砷浓度的现场测试工具。 该套件包括便携式红外光束光度计，用于测量水样中的吸光度。 红外发光二极管被配置为引导光束通过样本。 光检测器二极管测量通过样品的光的强度。 光检测器输出电压与样品中吸收的光有关，并显示在液晶显示屏上。 该套件使用具有低功耗要求的现成的电子和光电组件进行组装。 干电池或太阳能电池为套件供电。 为了测试砷，使用钼基化学物质选择性地将样品中的砷酸盐和磷酸盐结合并转化成钼蓝色复合物。 将与钼蓝色复合体中结合的砷酸盐和磷酸盐的样品的吸光度与其中磷酸盐而不是砷酸盐结合并转化的参考样品的吸光度进行比较。 使用两个样品的差分吸光度来获得水样中砷浓度的定量值。

公开(公告)号：WO2004019004A9

公开(公告)日：2004-05-27

申请号：PCT/US0326484

申请日：2003-08-21

Applicant: UNIV COLUMBIA ,  VAN GEEN ALEXANDER ,  PERONA PIETRO ,  MOSER CHRISTOPHE ,  PSALTIS DEMETRI

Inventor： VAN GEEN ALEXANDER ,  PERONA PIETRO ,  MOSER CHRISTOPHE ,  PSALTIS DEMETRI

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01N21/27 ,  G01N21/35 ,  G01N21/78 ,  G01N33/18 ,  G01J3/46 ,  G01N21/25

CPC classification number: G01N33/182 ,  G01J3/02 ,  G01J3/0272 ,  G01J3/0283 ,  G01J3/0286 ,  G01J3/108 ,  G01J3/42 ,  G01N21/274 ,  G01N21/276 ,  G01N21/31 ,  G01N21/3577 ,  G01N21/78 ,  G01N2021/1751

Abstract: A field test-kit for analyzing arsenic concentration in water samples incudes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared ligth emittng diode (120A, 120B) is configured to direct a beam of light through a specimen. A photodetecotr diode (130A, 130B) measures the intensity of light passing through the specimen. The photodetector (130A, 130B) output voltages relate to the light absorbed in the specimen and are displayed on a LCD (160) screen. To test for arsenic, molybdenum-blue color complexes. The light absorbance of a specimen with both arsenates and phosphates bound in molybdenum-blue color complexes is compared to that of a reference specimen in which phosphates but not arsenates are bound and converted. A quantitative value for the arsenic concentration in the water sample is determined from the differential light absorbance of the two specimens.

Abstract translation: 用于分析水样中砷浓度的现场测试工具包包括用于测量水样中光吸收的便携式红外光度计。 红外线发射二极管（120A，120B）被配置为引导光束通过样本。 光探测器二极管（130A，130B）测量穿过样本的光的强度。 光电探测器（130A，130B）的输出电压与样本中吸收的光有关并显示在LCD（160）屏幕上。 测试砷，钼蓝色复合物。 将砷酸盐和磷酸盐结合在钼 - 蓝色配合物中的样品的光吸收与与其中磷酸盐而非砷酸盐结合并转化的参考样品进行比较。 水样中砷浓度的定量值由两个样品的差示吸光度确定。

公开(公告)号：AU2003260041A8

公开(公告)日：2004-03-11

申请号：AU2003260041

申请日：2003-08-21

Applicant: UNIV COLUMBIA

Inventor： GEEN ALEXANDER VAN ,  PERONA PIETRO

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01N21/27 ,  G01N21/35 ,  G01N21/78 ,  G01N33/18 ,  G01J3/46 ,  G01N21/25

Abstract: A field test-kit for analyzing arsenic concentration in water samples is provided. The kit includes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared light emitting diode is configured to direct a beam of light through a specimen. A photodetector diode measures the intensity of light passing through the specimen. The photodetector output voltages relate to the light absorbed in the specimen and are displayed on a liquid crystal display screen. The kit is assembled using off-the-shelf electronic and opto-electronic components that have low power requirements. Dry cell batteries or solar cells power the kit. To test for arsenic, molybdenum based chemistries are used to selectively bind and convert arsenates and phosphates in the specimen into molybdenum-blue color complexes. The light absorbance of a specimen with both arsenates and phosphates bound in molybdenum-blue color complexes is compared to that of a reference specimen in which phosphates but not arsenates are bound and converted. The differential light absorbance of the two specimens is used to arrive at a quantitative value for the arsenic concentration in the water sample.

公开(公告)号：AU2003260041A1

公开(公告)日：2004-03-11

申请号：AU2003260041

申请日：2003-08-21

Applicant: UNIV COLUMBIA

Inventor： GEEN ALEXANDER VAN ,  PERONA PIETRO

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01N21/27 ,  G01N21/35 ,  G01N21/78 ,  G01N33/18

Abstract: A field test-kit for analyzing arsenic concentration in water samples is provided. The kit includes a portable infrared beam photometer for measuring light absorbance in aqueous specimens. An infrared light emitting diode is configured to direct a beam of light through a specimen. A photodetector diode measures the intensity of light passing through the specimen. The photodetector output voltages relate to the light absorbed in the specimen and are displayed on a liquid crystal display screen. The kit is assembled using off-the-shelf electronic and opto-electronic components that have low power requirements. Dry cell batteries or solar cells power the kit. To test for arsenic, molybdenum based chemistries are used to selectively bind and convert arsenates and phosphates in the specimen into molybdenum-blue color complexes. The light absorbance of a specimen with both arsenates and phosphates bound in molybdenum-blue color complexes is compared to that of a reference specimen in which phosphates but not arsenates are bound and converted. The differential light absorbance of the two specimens is used to arrive at a quantitative value for the arsenic concentration in the water sample.