US3884639A - Process for analyzing mercury - Google Patents
Process for analyzing mercury Download PDFInfo
- Publication number
- US3884639A US3884639A US439075A US43907574A US3884639A US 3884639 A US3884639 A US 3884639A US 439075 A US439075 A US 439075A US 43907574 A US43907574 A US 43907574A US 3884639 A US3884639 A US 3884639A
- Authority
- US
- United States
- Prior art keywords
- mercury
- vapor
- incineration
- sample
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 229910000497 Amalgam Inorganic materials 0.000 claims abstract description 20
- 150000001447 alkali salts Chemical class 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000005267 amalgamation Methods 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 25
- 239000012159 carrier gas Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 125000005587 carbonate group Chemical group 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000013022 venting Methods 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 7
- 238000004445 quantitative analysis Methods 0.000 abstract description 4
- 229940041669 mercury Drugs 0.000 description 67
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000001675 atomic spectrum Methods 0.000 description 5
- 229940008718 metallic mercury Drugs 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 235000013372 meat Nutrition 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000002731 mercury compounds Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- UOFGSWVZMUXXIY-UHFFFAOYSA-N 1,5-Diphenyl-3-thiocarbazone Chemical compound C=1C=CC=CC=1N=NC(=S)NNC1=CC=CC=C1 UOFGSWVZMUXXIY-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008645 Chenopodium bonus henricus Nutrition 0.000 description 1
- 244000138502 Chenopodium bonus henricus Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000012494 Quartz wool Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical class [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 for example Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/25375—Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.]
- Y10T436/255—Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.] including use of a solid sorbent, semipermeable membrane, or liquid extraction
Definitions
- ABSTRACT A process for quantitatively analyzing mercury in incineratable samples which comprises heating a mercury-containing sample in the presence of oxygen to effect complete incineration of the sample and form a vapor containing atomic mercury, passing such vapor through a heated glass tube containing a basic salt, cooling the vapor, bringing the cooled vapor into contact with a metal capable of amalgamation to capture the mercury as an amalgam, heating the amalgam to regenerate mercury vapor and measuring the quantity of that vapor.
- the quantitative analysis of mercury can be attained rapidly and automatically in a simple and precise manner without application of a particular preliminary treatment.
- the quantitative analysis of mercury has been performed either by oxidizing a mercury containing substance to convert mercury in various forms into mercuric compounds which were then extracted with dithizone and subjected to colorimetry, or by reducing a mercury-containing substance with a strong reducing agent, such as a stannous salt or ascorbic acid, to liberate metallic mercury from the substance and then allowing the metallic mercury to evaporate for atomic spectrum absorptiometry.
- a preliminary treat ment is required for decomposing the other ingredients present with a strong acid or a strong oxidizing agent to convert mercury into mercuric ions.
- the present inventor has already developed a process for quantitatively analyzing mercury which takes advantage of this normally undesirable property and uses the steps of completely incinerating a mercurycontaining sample to liberate therefrom atomic mer cury as vapor, bringing the mercury vapor into contact with a metal capable of amalgamation thereby capturing the mercury vapor as an amalgam, heating the amalgam to regenerate mercury vapor and measuring the quantity of that vapor.
- this process is rather simple and advantageous in respect to treating time.
- a process for analyzing mercury which comprises heating a mercury-containing sample at a temperature of 400l,lOOC in the presence of oxygen to effect complete incineration of the sample into a vapor containing atomic mercury, passing the thus generated vapor through heated glass tubes containing a basic salt, cooling the vapor, bringing the cooled vapor into contact with a metal capable of amalgamation to capture the mercury as an amalgam, heating the amalgam to regenerate vapor of mercury and measuring the quantity of that vapor.
- the use of a basic salt serves to absorb the acidic incineration gas while heating of the glass delivery tube having the basic salt therein serves to prevent condensation of any liquid containing mercury, thus enabling the quantity of mercury to be measured precisely.
- FIG. 1 is a schematic view of one example of apparatus for practicing the process of this invention.
- FIG. 2 is a chart showing the results of analyses carried out in Example 1 according to the atomic spectrum absorptiometry vs the prior art and a control.
- a sample vessel 2 is filled with a sample to be analyzed and placed in the incineration zone 3 of an incineration tube.
- a carrier gas such as air or oxygen is introduced into the tube through a carrier gas inlet 1.
- Introduction of the carrier gas is attained by the aid of a diaphragm pump or compressor or by using a self-pressurized gas directly from a pressurized air bomb or oxygen bomb, none of which is shown, It is obvious that such carrier gas should previously be freed from mercury by any suitable means.
- the sample incineration zone 3 is composed, for example, of a quartz tube packed with a filler and is externally heated at 4001,100C, preferably 600850C by an appropriate electric mantle heater which may be switched in several steps, for example by four steps, so as to enable 3 variation of the heating range for providing an optimum incineration condition according to the type of sample.
- the sample is decomposed thermally by incineration in this zone and vaporized mercury is formed.
- the rate of heating should be controlled so as to prevent bumping.
- Mercury compounds in various forms are decomposed by this incineration treatment, generating a vapor containing atomic mercury.
- a filler is usually charged into the incineration tube to promote complete incineration of the sample. Quartz wool is ordinarily used as the filler but, if desired, an oxidizing catalyst such as cupric oxide, cobalt oxides, platinum or palladium may also be used.
- the gas formed by thermal decomposition is entrained in the carrier gas and passed through a zone 4 where a basic salt has previously been charged.
- a basic salt is carbonates of alkali and alkali earth metals, for example, potassium carbonate, so-
- the acidic incineration gas is neutrallized by passage through this zone 4.
- the zone 4 is heated preferably at 200700C to prevent adsorption of mercury onto the basic salt.
- the incineration gas entrained in the carrier gas is then passed through a spiral cooling tube 5 and conveyed to a water elimination zone 6 where water vapor is condensed and separated from the gas. Cooling of the gas is effected by either water cooling or air cooling and the condensed water is vented out of the system. It is preferable to control the partial pressure of water vapor in the carrier gas which has passed through the water elimination zone 6 so that the partial pressure may be adjusted to less than the saturated water vapor pressure.
- the gas freed from water is then conveyed to a mercury capturing zone 7 where metallic mercury contained in the gas is brought into contact with an amalgamating agent and captured as an amalgam.
- the mercury capturing agent is a metal capable of amalgamation and examples thereof include gold, silver, copper, cadmium, zinc, platinum and palladium. These metals may be used alone but may be carried on a heatresisting support such as quartz powder, diatomaceous earth or refractory brick powder.
- Mercury caught by the amalgamating agent in the zone 7 is then heated in situ and liberated as mercury vapor from the agent.
- the mercury vapor is again entrained in the carrier gas and conveyed to a mercury analyzer (not shown) where the quantity of mercury is measured by a suitable means known per se. For example, mercury vapor in the carrier gas is determined in the analyzer by measuring absorbance at a resonance line of 253.7 m,u.. Any type of conventional atomic spectrum absorptiometer or mercury analyzer can be used as the analyzer for this invention.
- the sample When a sample of a liquid, living body or mineral is subjected to analysis according to the process of this invention, the sample is charged into a sample vessel and then thermally decomposed in the incineration zone to form an incineration gas containing vaporized atomic mercury.
- a definite volume of the gaseous sample is entrained in the carrier gas before introduction into the analyzer.
- the process of this invention has the advantage that mercury compounds in various forms can be analyzed quantitatively within a very short period of time, say, within ten minutes, without any necessity for special preliminary treatment as in prior art processes. Moreover, the individual analyses can be carried out entirely automatically without manual operation. No special reagents are used so that the number of blank tests can be minimized. Finally, this invention makes possible the measurement of the quantity of mercury in samples in a very precise manner.
- EXAMPLE 1 In a quartz vessel were placed 50 mg of gelatin and 0.1 pg of mercury was added thereto. The quartz vessel was inserted into a heated glass tube which had been packed with sodium carbonate to neutralize the acidic gas. The gelatin sample was thermally decomposed in a stream of oxygen and the incineration gas was separated from condensed water and passed through an amalgamating agent in the form of platinum carried on diatomaceous earth where the vapor of atomic mercury in the incinerated gas formed an amalgam with the platinum. Then, the amalgamating agent was heated at 800C to regenerate atomic mercury vapor which was then subjected to atomic spectra absorptiometry. The results obtained are shown in Chart A of FIG. 2.
- EXAMPLE 2 Using a combination of the following apparatus, accuracy in quantitative analysis of mercury according to the process of this invention was tested: Incineration apparatus Model MV-250 (Sugiyama-Gen Environmental Services); Analyzer Model MV-253 (Toshiba-Beckmann; gain 10; span 6); Recorder Available from Nippon Denshi Kagaku (gain 0.1 V; speed 2.5 cm/min.).
- Incineration apparatus Model MV-250 Sugiyama-Gen Environmental Services
- Analyzer Model MV-253 Toshiba-Beckmann; gain 10; span 6
- Recorder Available from Nippon Denshi Kagaku gain 0.1 V; speed 2.5 cm/min.
- EXAMPLE 3 The quantity of mercury in fish meat was measured by using the same apparatus and conditions as those described in Example 2 except that the incineration time was 5 minutes. In this test, meat of dab was used as the test sample. The results of the test are as shown in Table 2 below.
- a process for quantitatively analyzing mercury which comprises heating a mercury containing sample in the presence of oxygen to effect complete incineration of the sample to form a vapor containing atomic mercury, passing such vapor through a heated glass tube containing a basic salt, cooling the vapor, bringing the cooled vapor into contact with a metal capable of amalgamation to capture the mercury as an amalgam, heating the amalgam to regenerate mercury vapor and measuring the quantity of the mercury vapor.
- carrier gas is selected from the group consisting of oxygen and an oxygen-containing gas.
- An incineration apparatus for analyzing organic samples for mercury which comprises a sample incineration zone provided with an external heating means and an inlet for a carrier gas, an acidic gas absorbing Zone receiving the gas from said incineration zone and provided with a basic salt and an external heating means, a cooling zone to condensate water from the incineration gas after passage through said absorbing zone, a mercury-capturing zone provided with a metal capable of amalgamation and an external heating means operable to heat theresultant amalgam for regenerating mercury vapor from the amalgam, and an outlet from said capturing zone for venting the carrier gas and for delivering said regenerated vapor to a mercury vapor measuring means.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP48090702A JPS5248829B2 (enrdf_load_stackoverflow) | 1973-08-13 | 1973-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3884639A true US3884639A (en) | 1975-05-20 |
Family
ID=14005844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US439075A Expired - Lifetime US3884639A (en) | 1973-08-13 | 1974-02-04 | Process for analyzing mercury |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3884639A (enrdf_load_stackoverflow) |
| JP (1) | JPS5248829B2 (enrdf_load_stackoverflow) |
| DE (1) | DE2424689C3 (enrdf_load_stackoverflow) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023929A (en) * | 1974-09-04 | 1977-05-17 | Bayer Aktiengesellschaft | Process for determining traces of mercury in liquids |
| US4404288A (en) * | 1979-10-25 | 1983-09-13 | The Perkin-Elmer Corporation | Method and apparatus for concentrating a vapor of a mercury sample solution |
| US4404287A (en) * | 1980-11-25 | 1983-09-13 | Central Electricity Generating Board Of Sudbury House | Method and apparatus for determining chemical species |
| US4758519A (en) * | 1984-08-20 | 1988-07-19 | Environmental Technical Laboratory, Ltd. | Method for continuously analysing total gaseous mercury |
| US5092156A (en) * | 1987-07-08 | 1992-03-03 | Thermedics Inc. | Vapor collector/desorber with tube bundle and metal foil |
| US5098658A (en) * | 1989-06-02 | 1992-03-24 | Bodenseewerk Perkin Elmer Gmbh | Device for analyzing samples for mercury and/or hydride-forming elements |
| US5409522A (en) * | 1994-04-20 | 1995-04-25 | Ada Technologies, Inc. | Mercury removal apparatus and method |
| US5487871A (en) * | 1992-10-30 | 1996-01-30 | Ldc Analytical, Inc. | Mercury assay |
| US5597535A (en) * | 1994-02-25 | 1997-01-28 | Tekran Inc. | Apparatus for detecting mercury |
| US5679957A (en) * | 1996-01-04 | 1997-10-21 | Ada Technologies, Inc. | Method and apparatus for monitoring mercury emissions |
| US5879948A (en) * | 1997-05-12 | 1999-03-09 | Tennessee Valley Authority | Determination of total mercury in exhaust gases |
| DE10045212A1 (de) * | 2000-09-13 | 2002-03-28 | Seefelder Mestechnik Gmbh & Co | Verfahren zur Bestimmung von Quecksilber |
| DE10325702B3 (de) * | 2003-06-06 | 2004-09-16 | M & C Products Analysentechnik Gmbh | Abgasmessvorrichtung |
| US20050186678A1 (en) * | 2004-02-19 | 2005-08-25 | Sekiyushigen Kaihatsu Kabushiki Kaisha | Process for measuring mercury concentration within hydrocarbons |
| US20130236361A1 (en) * | 2010-11-30 | 2013-09-12 | Nippon Instruments Corporation | Heating combustion tube, pyrolysis apparatus and mercury analyzing apparatus in analysis of mercury |
| US9128068B1 (en) * | 2014-06-10 | 2015-09-08 | Scott Risser | Sample conditioning systems and methods |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO177875C (no) * | 1993-07-26 | 1995-12-06 | Elkem As | Fremgangsmåte for direkte kjemisk analyse av smeltet metall |
| CN102698657B (zh) * | 2012-06-19 | 2015-04-01 | 北京雪迪龙科技股份有限公司 | 一种汞的催化反应装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2345090A (en) * | 1940-04-10 | 1944-03-28 | Westinghouse Electric & Mfg Co | Mercury detecting method and apparatus |
| US3232033A (en) * | 1962-04-24 | 1966-02-01 | Cordero Mining Company | Device for absorption of mercury vapor |
| US3826618A (en) * | 1970-09-28 | 1974-07-30 | Ionics | Automatic mercury monitor |
| US3826614A (en) * | 1970-09-28 | 1974-07-30 | Ionics | Total mercury monitor |
-
1973
- 1973-08-13 JP JP48090702A patent/JPS5248829B2/ja not_active Expired
-
1974
- 1974-02-04 US US439075A patent/US3884639A/en not_active Expired - Lifetime
- 1974-05-21 DE DE2424689A patent/DE2424689C3/de not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2345090A (en) * | 1940-04-10 | 1944-03-28 | Westinghouse Electric & Mfg Co | Mercury detecting method and apparatus |
| US3232033A (en) * | 1962-04-24 | 1966-02-01 | Cordero Mining Company | Device for absorption of mercury vapor |
| US3826618A (en) * | 1970-09-28 | 1974-07-30 | Ionics | Automatic mercury monitor |
| US3826614A (en) * | 1970-09-28 | 1974-07-30 | Ionics | Total mercury monitor |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023929A (en) * | 1974-09-04 | 1977-05-17 | Bayer Aktiengesellschaft | Process for determining traces of mercury in liquids |
| US4404288A (en) * | 1979-10-25 | 1983-09-13 | The Perkin-Elmer Corporation | Method and apparatus for concentrating a vapor of a mercury sample solution |
| US4404287A (en) * | 1980-11-25 | 1983-09-13 | Central Electricity Generating Board Of Sudbury House | Method and apparatus for determining chemical species |
| US4758519A (en) * | 1984-08-20 | 1988-07-19 | Environmental Technical Laboratory, Ltd. | Method for continuously analysing total gaseous mercury |
| US5092156A (en) * | 1987-07-08 | 1992-03-03 | Thermedics Inc. | Vapor collector/desorber with tube bundle and metal foil |
| US5098658A (en) * | 1989-06-02 | 1992-03-24 | Bodenseewerk Perkin Elmer Gmbh | Device for analyzing samples for mercury and/or hydride-forming elements |
| US5487871A (en) * | 1992-10-30 | 1996-01-30 | Ldc Analytical, Inc. | Mercury assay |
| US5597535A (en) * | 1994-02-25 | 1997-01-28 | Tekran Inc. | Apparatus for detecting mercury |
| US5660795A (en) * | 1994-02-25 | 1997-08-26 | Tekran Inc. | Cartridge for collection of a sample by adsorption onto a solid surface |
| US5409522A (en) * | 1994-04-20 | 1995-04-25 | Ada Technologies, Inc. | Mercury removal apparatus and method |
| US5679957A (en) * | 1996-01-04 | 1997-10-21 | Ada Technologies, Inc. | Method and apparatus for monitoring mercury emissions |
| US5879948A (en) * | 1997-05-12 | 1999-03-09 | Tennessee Valley Authority | Determination of total mercury in exhaust gases |
| DE10045212A1 (de) * | 2000-09-13 | 2002-03-28 | Seefelder Mestechnik Gmbh & Co | Verfahren zur Bestimmung von Quecksilber |
| DE10325702B3 (de) * | 2003-06-06 | 2004-09-16 | M & C Products Analysentechnik Gmbh | Abgasmessvorrichtung |
| US20040244507A1 (en) * | 2003-06-06 | 2004-12-09 | M & C Products Analysentechnik Gmbh | Waste gas measuring device |
| US20050186678A1 (en) * | 2004-02-19 | 2005-08-25 | Sekiyushigen Kaihatsu Kabushiki Kaisha | Process for measuring mercury concentration within hydrocarbons |
| EP1571447A1 (en) * | 2004-02-19 | 2005-09-07 | Sekiyushigen Kaihatsu Kabushiki Kaisha | Process for measuring mercury concentration within hydrocarbons |
| US7422907B2 (en) | 2004-02-19 | 2008-09-09 | Sekiyushigen Kaihstsu Kabushiki Kaisha | Process for measuring mercury concentration within hydrocarbons |
| US20130236361A1 (en) * | 2010-11-30 | 2013-09-12 | Nippon Instruments Corporation | Heating combustion tube, pyrolysis apparatus and mercury analyzing apparatus in analysis of mercury |
| US9128068B1 (en) * | 2014-06-10 | 2015-09-08 | Scott Risser | Sample conditioning systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5248829B2 (enrdf_load_stackoverflow) | 1977-12-13 |
| DE2424689C3 (de) | 1978-10-05 |
| JPS5047689A (enrdf_load_stackoverflow) | 1975-04-28 |
| DE2424689A1 (de) | 1975-03-20 |
| DE2424689B2 (de) | 1978-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3884639A (en) | Process for analyzing mercury | |
| US4023929A (en) | Process for determining traces of mercury in liquids | |
| Verlinden et al. | The determination of selenium by atomic-absorption spectrometry: A review | |
| Guo et al. | Studies on the reaction between cadmium and potassium tetrahydroborate in aqueous solution and its application in atomic fluorescence spectrometry | |
| EP0172521B1 (en) | Method for continuously analysing total gaseous mercury | |
| US4332591A (en) | Analytical method and apparatus for the determination of total nitrogen contents in aqueous systems | |
| Zhe-ming et al. | Determination of tributyltin and inorganic tin in sea-water by solvent extraction and hydride generation electrothermal atomic absorption spectrometry | |
| Vil’pan et al. | Direct atomic absorption determination of mercury in drinking water and urine using a two-step electrothermal atomizer | |
| GB1462277A (en) | Method and apparatus for sulphuric acid aerosol analysis | |
| Okuno et al. | Determination of mercury in biological samples by flameless atomic absorption after combustion and mercury-silver amalgamation | |
| US3964869A (en) | Analytical apparatus for serial determination of nitrogen in samples by the Kjeldahl method | |
| Orsini et al. | Application of a sequential extraction procedure to calcareous soil samples: Preliminary studies | |
| US5185268A (en) | Method for the determination of total nitrogen including adding an alkali metal halide or an alkaline earth metal halide to the sample | |
| Sinemus et al. | Automated determination of mercury by continuous flow vapour generation and collection in a graphite tube | |
| Ertaş et al. | Electrothermal atomic absorption spectrometric determination of gold by vapor formation and in situ trapping in graphite tubes | |
| Konieczka et al. | Calibration of the thermal desorption-gas chromatography-mass spectrometry system using standards generated in the process of thermal decomposition of chemically modified silica gel | |
| Yang et al. | Determination of mercury in biological tissues by graphite-furnace atomic absorption spectrometry with an in-situ concentration technique | |
| Lendero et al. | Detection of preatomization losses of mercury in the graphite tube with the tracer technique | |
| CN112986453B (zh) | 一种对石笋中的有机碳同位素进行高分辨率测定的方法及系统 | |
| JPS5839212B2 (ja) | 白金族金属の塩化焙焼方法 | |
| Wimberley | The determination of total mercury at the part per billion level in soils, ores, and organic materials | |
| De-qiang et al. | In-situ concentration and determination of mercury by graphite furnace atomic absorption spectrometry with Pd-Rh as the chemical modifier | |
| McGaw et al. | A rapid method for the preparation of combustion samples for stable carbon isotope analysis by isotope ratio mass spectrometry | |
| SU1004871A1 (ru) | Способ определени меркаптанов в природных газах и конденсатах | |
| RU2216799C2 (ru) | Способ определения водорода в металлах |