Patent · US Active

Arrangement and method for detecting small substance concentrations

US8062502B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Walter Gumbrecht · Herzogenaurach, DE
Peter Paulicka · Erlangen, DE

Key dates

Filing date	Sep 28, 2007
Grant date	Nov 22, 2011
Priority date	—
Expiry date	Sep 24, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/3277
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In order to avoid problems caused by baseline drift, it is expedient in a method of an embodiment of the present application not to measure a signal rise in a detection space, but to allow a certain time period to elapse in order to enrich a detectable product (enrichment phase), then to measure a first detection signal, and to measure the baseline signal as second detection signal only after rinsing out the detection space and removing the enriched product. In at least one embodiment, the enriched product is not detected from a signal rise with reference to a baseline, but from a signal difference of first and second detection signals.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.