| 主权项 |
1. A method for determining an analyte in a water sample with a mobile water analysis system having a basic unit and a test element insertable in the basic unit, the method comprising:
providing the test element comprising:
a microfluidic sample line comprising:
an inlet opening disposed at a first end, the inlet opening being configured to receive the water sample,a pump port disposed at a second end of the microfluidic sample line,an inlet section disposed between the inlet opening and the pump port,a measuring section comprising at least one window arranged at an end of the measuring section, the measuring section being arranged between the inlet section and the pump port and being coincident with a sample pathway,a first reagent section disposed between the measuring section and the pump port, anda reagent disposed in the first reagent section of the microfluidic sample line; providing the basic unit comprising:
a photometer comprising a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam,a test element receptacle configured so as to allow the test element to be inserted into the test element receptacle,a photometric measuring track, the photometric measuring track being defined by the measuring section when the test element is inserted into the element receptacle, the measurement beam and the photometric measuring track being aligned during a photometric measurement so that the photometric measurement occurs along a length of each of the photometric measuring track and the measuring section, and not in a cross direction thereto, anda pump actuator cooperatively connected with the pump opening port, the pump actuator being configured to pump the water sample into, and back and forth through, the microfluidic sample line; inserting the test element into the test element receptacle of the basic unit; transporting the water sample from the inlet opening to the measuring section by activating the pump actuator; performing a first analysis of the water sample in the measuring section with the photometer to determine a background signal of the water sample; transporting the water sample from the measuring section to the first reagent section by activating the pump actuator, wherein the water sample mixes with the reagent; transporting the water sample from the first reagent section to the measuring section by activating the pump actuator; and performing a second analysis of the water sample in the measuring section with the photometer to determine a gross value of the water sample. |
