公开(公告)号：US10823649B2

公开(公告)日：2020-11-03

申请号：US16146160

申请日：2018-09-28

申请人： Paul K. Westerhoff ,  Shahnawaz Sinha ,  Treavor Boyer

发明人： Paul K. Westerhoff ,  Shahnawaz Sinha ,  Treavor Boyer

IPC分类号： G01N1/40 ,  B01D19/00 ,  G01N21/25 ,  G01N21/31 ,  G01J3/00 ,  G01N33/18 ,  G01N21/05 ,  B01L3/00 ,  G01N1/22 ,  G01N21/03 ,  G01N1/10

摘要： A microfluidic device includes a sample inlet for a fluid sample, a degassing chamber having a gas-permeable membrane and defining first and second portions separated by the gas permeable membrane, and a detection chamber. The sample inlet and the detection chamber are fluidly coupled to the first and second portions, respectively of the degassing chamber. The detection chamber is operably coupled to a light source and a detector. Assessing a concentration of chlorine gas in an aqueous sample includes providing an aqueous sample to a microfluidic device, separating gas from the aqueous sample in the microfluidic device, providing the gas to a detector, assessing the absorbance of the gas sample at a known absorption wavelength of chlorine, and based on the assessed absorbance of the gas sample at the known absorption wavelength of chlorine, assessing a concentration of chlorine gas in the aqueous sample.

公开(公告)号：US20190094118A1

公开(公告)日：2019-03-28

申请号：US16146160

申请日：2018-09-28

申请人： Paul K. Westerhoff ,  Shahnawaz Sinha ,  Treavor Boyer

发明人： Paul K. Westerhoff ,  Shahnawaz Sinha ,  Treavor Boyer

IPC分类号： G01N1/40 ,  B01D19/00 ,  G01N21/25 ,  G01N21/31

摘要： A microfluidic device includes a sample inlet for a fluid sample, a degassing chamber having a gas-permeable membrane and defining first and second portions separated by the gas permeable membrane, and a detection chamber. The sample inlet and the detection chamber are fluidly coupled to the first and second portions, respectively of the degassing chamber. The detection chamber is operably coupled to a light source and a detector. Assessing a concentration of chlorine gas in an aqueous sample includes providing an aqueous sample to a microfluidic device, separating gas from the aqueous sample in the microfluidic device, providing the gas to a detector, assessing the absorbance of the gas sample at a known absorption wavelength of chlorine, and based on the assessed absorbance of the gas sample at the known absorption wavelength of chlorine, assessing a concentration of chlorine gas in the aqueous sample.