Patent · US Expired

Atomic absorption spectrometer for measuring the mercury concentration in a sample

US5619041A · kind A · utility

3Cited by

7References

12Claims

0Family size

Assignee

Bodenseewerk Perkin-Elmer GmbH · DE

Inventors

Erwin Hoffmann · Leverkusen, DE
Christian L udke · Berlin, DE

Key dates

Filing date	Aug 30, 1995
Grant date	Apr 8, 1997
Priority date	—
Expiry date	Aug 30, 2015

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/3103
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An atomic absorption spectrometer for measuring mercury concentration in a sample which includes an arrangement for producing emission lines of 184.9 and 253.7 nm at the same time, a sample accommodating chamber which can be irradiated with radiation of the emission lines, two electro-optical transducers responsive, with different sensitivities, to the radiation emission lines and arranged so that radiation passing through the sample chamber simultaneously impinges thereon, each extinction measuring means having a preselected extinction value range, and a comparator for switching between respective measurement ranges to determine the mercury concentration.

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