公开(公告)号：US3826618A

公开(公告)日：1974-07-30

申请号：US26999572

申请日：1972-07-10

Applicant: IONICS

Inventor： CAPUANO I

IPC: G01N31/12 ,  G01N33/00 ,  G01N21/24 ,  G01N31/06

CPC classification number: G01N31/12 ,  G01N33/0013 ,  G01N33/0045 ,  Y10T436/11

Abstract: APPARATUS AND METHOD ARE PROVIDED FORANALYZING GAS STREAMS FOR THEIR CONTENT OF IONIC, ELEMENTIC AND ORGANIC MERCURY EVEN IN THE PRESENCE OF OTHER CONTAMINATS, INCLUDING ELEMENTAL OR AVAILABLE CHLORINE OR ORGANIC MATTER. THE SAMPLE IS FIRST PYROLYZED AND THEN AUTOMICALLY MEASURED AND TREATED WITH AQUEOUS REDUCING REAGENT. THE RESULTING ELEMENTAL MERCURY IS TRANSFERRED TO A PHOTOMETRIC DETECTOR AND THE RESULTS ARE INDICATED AND/OR RECORDED AUTOMATICALLY, ACCURATELY AND RAPIDLY. THE APPARATUS AND METHOD ARE ESPECIALLY USEFUL IN THE CONTROL OF

MERCURY CONTAMINATION IN THE ENVIRONMENT AND ALSO FOR MONITORING CHEMICAL PROCESS STREAMS.

公开(公告)号：US3826614A

公开(公告)日：1974-07-30

申请号：US25425172

申请日：1972-05-17

Applicant: IONICS

Inventor： CAPUANO I

IPC: G01N31/00 ,  G01N33/00 ,  G01N33/18 ,  G01N21/26 ,  G01N31/10

CPC classification number: G01N33/0013 ,  G01N31/005 ,  G01N33/0045 ,  G01N33/1813 ,  Y10T436/11

Abstract: APPARATUS AND METHOD ARE PROVIDED FOR ANALYZING LIQUID STREAM FOR THEIR CONTENT OF MERCURY INCLUDING ELEMENTAL MERCURY, IONIC MERCURY AND UNDISSOCIATED MERCURY COMPOUNDS SUCH AS PHENYL MERCURY AND METHYL MERCURY. THE SAMPLE IS AUTOMATICALLY MEASURED AND FIRST TREATED WITH AN ACIDIC METAL SALT REAGENT CONTAINING AN OXIDANT FOR OXIDIZING ELEMENTARY MERCURY IN THE SAMPLE TO IONIC MERCURY AND THEN WITH HYDRAZINE TO FORMA SUITABLE CATALYTIC COLLID. ELEMENTARY MERCURY IS THEN FORMED BY THE ACTION OF HYDRAZINE AND THE CATALYTIC COLLOID ON THE IONIC AND COMBINED MERCURY AND IS TRANSFERRED TO A PHOTOMETRIC DETECTOR. THE RESULTS ARE INDICATED AND/OR RECORDED AUTOMATICALLY, ACCURATELY AND RAPIDLY. THE AP-

PARATUS AND METHOD ARE ESPECIALLY USEFUL IN THE CONTROL OF MERCURY CONTAMINATION IN THE ENVIRONMENT AND ALSO FOR MONITORING CHEMICAL PROCESS STREAMS.