Determination of Bismuth Content by Atomic Absorption Spectrometry
Determination of Bismuth Content by Atomic Absorption Spectrometry, Total:189 items.
The international standard classification for "Determination of Bismuth Content by Atomic Absorption Spectrometry" includes: Testing of metals , Rubber , Plastics in general , Non-metalliferous minerals , Chromium ores .
The Chinese standard classification for "Determination of Bismuth Content by Atomic Absorption Spectrometry" includes: Metal chemical property test method , Fuel oil , Petroleum products additive in general , Lubricating oil , Rubber products in general , Metallurgical auxiliary material ore , Chrome ore .
Group Standards of the People's Republic of China
- T/CSTM 00770-2021 Silver—Determination of cadmium content —Flame atomic absorption spectrometric method
- T/CSTM 00772-2021 Silver—Determination of magnesium content —Flame atomic absorption spectrometric method
- T/CSTM 01143-2022 Zinc and zinc alloys—Determination of bismuth content— Flame atomic absorption spectrometric method
- T/CSTM 00771-2021 Silver—Determination of gold content —Flame atomic absorption spectrometric method
- T/CSTM 01138-2022 Tungsten—Determination of calcium content—Flame atomic absorption spectrometric method
- T/CSTM 00773-2021 Silver—Determination of zinc content —Flame atomic absorption spectrometric method
Professional Standard - Commodity Inspection
- SN/T 2091-2008 Determination of lead,copper,iron and bismuth contents in antimony ingot for import and export—Atomic absorption spectrometric method
Professional Standard - Petroleum
- SY/T 0528-1993 Determination of Trace Arsenic in Crude Oil by Atomic Absorption Spectrometry
Professional Standard - Petrochemical Industry
- SH/T 0077-1991 Determination of iron content in lubricating oil (atomic absorption spectrometry method)
- SH/T 0617-1995 Determination method for lead content in lubricant (atomic absorption spectrometry method)
- SH/T 0712-2002 Standard test method for iron in gasoline by atomic absorption spectroscopy
- SH/T 0027-1990 Determination of magnesium content in additive (atomic absorption spectrometry method)
- SH/T 0605-1994 Determination of molybdenum content in lubricating oil (atomic absorption spectrometry)
- SH/T 0061-1991 Determination of magnesium content in lubricating oil (atomic absorption spectrometry method)
- SH/T 0711-2002 Standard test method for manganese in gasoline by atomic absorption spectroscopy
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 7043.1-2001 Rubber--Determination of copper content by atomic absorption spectrometry
- GB/T 8020-1987 Gasoline--Determination of lead content--Atomic absorption spectrometry
- GB/T 11201-2002 - Determination of iron content by atomic absorption spectrometry
- GB/T 9874-2001 - Determination of lead content by atomic absorption spectrometry
- GB/T 41939-2022 Rubber—Determination of magnesium content by atomic absorption spectrometry
- GB/T 13253-2006 Rubber - Determination of manganese content by atomic absorption spectrometry
- GB/T 8020-2015 Determination of lead in gasoline―Atomic absorption spectrometry
- GB/T 4500-2003 Rubber-Determination of zine content by atomic absorption spectrometry
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
- GB/T 5195.7-2016 Fluorspar―Determination of zinc content―Flame atomic absorption spectrophotometric method
Professional Standard - Ferrous Metallurgy
- YB/T 505.6-2007 Vanadium and Titanium Slag - Determination of Manganese Oxide Content - Flame Atomic Absorption Method
工业和信息化部
- YS/T 1345.5-2020 Methods for chemical analysis of bismuth-rich lead-Part 5:Determination of copper content-Flame atomic absorption spectrometry
- YB/T 4726.13-2022 Ferric-containing dust and sludge--Determination of potassium and sodiumcontents--Flame atomic absorption spectrophotometric method
Professional Standard - Energy
- NB/SH/T 0711-2019 Standard test method for manganese in gasoline by atomic absorption spectroscopy
RU-GOST R
- GOST 28407.6-1989 Bismuth concentrate. Atomic absorption method for determination of silver
- GOST 28407.7-1989 Bismuth concentrate. Atomic absorption method for determination of gold
- GOST 28407.5-1989 Bismuth concentrate. Atomic absorption method for determination of bismuth, lead and copper
- GOST 14047.4-1978 Lead concentrates. Determination of bismuth content. Photometric, polarographic and atomic absorption methods
- GOST 23957.2-1980 Zinc. Atomic-absorbic method for the determination of tin
- GOST 23957.2-2003 Zinc. Atomic-absorption method for determination of tin
- GOST R 51942-2002 Gasolines. Determination of lead by method of atomic absorption spectrometry
- GOST R ISO 6351-2015 Nickel. Determination of silver, bismuth, cadmium, cobalt, copper, iron, manganese, lead, and zinc contents. Flame atomic absorption spectrometric method
- GOST R 51925-2002 Gasolines. Determination of manganese by method of atomic absorption spectroscopy
- GOST R 51942-2010 Gasolines. Determination of lead by method of atomic absorption spectrometry
- GOST R ISO 7523-2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents. Electrothermal atomic absorption spectrometric method
- GOST 25363-1982 Zinc concentrates. Atomic-absorption methods for the determination of gold and silver contents
- GOST 26100-1984 Copper concentrates. Determination of lead, zinc, cadmium. Flame atomic absorption method
- GOST 14047.2-1978 Lead concentrates. Determination of copper and zinc by polarographic, complexometric and atomic absorption methods
- GOST R ISO 4943-2010 Steel and iron. Determination of copper content. Flame atomic absorption spectrometric method
- GOST 27236-1987 Copper concentrates. Flame atomic absorption method for determination of iron, cobalt, nickel
- GOST R 53218-2008 Organic fertilizers. Atomic-absorption method for determination of heavy metals content
- GOST R ISO 4940-2010 Steel and iron. Determination of nickel content. Flame atomic absorption spectrometric method
CZ-CSN
- CSN 42 0645 Cast.7-1987 Chemical analysis of non-ferrous metals and alloys. Antimony. Determination of bismuth by the photometric method and atomic absorption method
- CSN 42 0680 Cast.2-1986 Chemical analysis of non-ferrous metals and alloys. Tin. Determination of bismuth by the photometric method and atomic absorption method
- CSN 42 0620 Cast.12-1981 Brasses. Determination of bismuth by the photometric raethods and atomic absorption method
- CSN 42 0622 Cast.15-1981 Bronzes. Determination of bismuth by the photometric method and atomic absorption method
- CSN 42 0611 Cast.6-1986 Chemical analysis of non-ferrous metals. Copper-base bearing metals. Determination of bismuth by the photometric method and atomic absorption method
- CSN 42 0621 Cast.48-1983 Chemical analysis of non-ferrous metals and alloys. Copper. Determination of bismuth by the atomic absorption method
- CSN 42 0635 Cast.11-1986 Chemical analysis of non-ferrous metals and alloys. Lead. Determination of bismuth by the atomic absorption method
- CSN 44 1776-1988 Lead concentrates. Determination of cadmium content
- CSN 44 1626-1989 Lead - zinc ores. Atomic absorption method of determination of cadmium
- CSN 44 1631-1989 Lead - zinc ores. Atomic absorption method of determination of silver
- CSN 44 1669-1989 Zinc concentrates. Determination of cadmium content
- CSN 42 0691 Cast.1-1985 Chemical analysis of non-ferrous metals and alloys. Titanium. Determination of iron by the photometric method and atomic absorption method
- CSN 42 0680 Cast.3-1986 Chemical analysis of non-ferrous metals and alloys. Tin. Determination of iron by the photometric method and atomic absorption method
- CSN 42 0645 Cast.3-1987 Chemical analysis of non-ferrous metals and alloys. Antimony. Determination of iron by the photometric method and atomic absorption method
- CSN 42 0640 Cast.5-1982 Nickel. Determination of iron by the photometric method and atomic abserption method
- CSN 42 0680 Cast.6-1986 Chemical analysis of non-ferrous metals and alloys. Tin. Determination of antimony by the photometric method and atomic absorption method
- CSN 42 0620 Cast.11-1981 Brasses. Determination of antimony by the photometric method and atomic absorption method
- CSN 42 0622 Cast.17-1981 Bronzes. Determination of antimony by the photometric and atomic absorption method
- CSN 42 0614-8-1994 Lead-tin base alloys. Determination of bismuth by the atomic absorption method
- CSN 75 7400-1998 Water quality - Determination of silver by atomic absorption spectrometric methods
- CSN 44 1728-1989 Molybdenum concentrates. Determination of copper content
- CSN 44 1732-1989 Molybdenum concentrates. Determination of zinc
- CSN 44 1774-1988 Lead concentrates. Determination of cobalt content
- CSN 44 1662-1989 Zinc concentrates. Determination of copper content
- CSN 44 1731-1989 Molybdenum concentrates. Determination of tin
- CSN 44 1733-1989 Molybdenum concentrates. Determination of lead
- CSN ISO 7523:1994 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents. Electrothermal atomic absorption spectrometric method
- CSN 42 0617 Cast.2-1988 Chemical analysis of non-ferrous metals and alloys. Alloys meltable at low temperature. Determination of bismuth by the atomic absorption method
- CSN 44 1661-1989 Zinc concentrates. Determination of lead content
- CSN 42 0645 Cast.2-1987 Chemical analysis of non-ferrous metals and alloys. Antimony. Determination of arsenic by the atomic absorption method, photometric method and titrimetric method
ES-AENOR
- UNE 37-252-1986 Determination of lead and bismuth content. Atomic absorption spectrophotometry
British Standards Institution (BSI)
- BS DD CEN/TS 14938-2:2006 Copper and copper alloys - Determination of bismuth content - FAAS method
- BS EN 14938-2:2010 Copper and copper alloys. Determination of bismuth content. Part 2: Flame atomic absorption spectrometric method (FAAS)
- BS ISO 6101-4:2022 Rubber. Determination of metal content by atomic absorption spectrometry. Determination of manganese content
- BS ISO 6101-2:2019 Rubber. Determination of metal content by atomic absorption spectrometry - Determination of lead content
- BS ISO 6101-3:2022 Rubber. Determination of metal content by atomic absorption spectrometry. Determination of copper content
- BS ISO 6101-1:2019 Rubber. Determination of metal content by atomic absorption spectrometry - Determination of zinc content
- BS DD CEN/TS 16197:2011 Fertilizers. Determination of magnesium by atomic absorption spectrometry
- BS EN 16197:2012 Fertilizers. Determination of magnesium by atomic absorption spectrometry
- BS ISO 6101-3:2014 Rubber. Determination of metal content by atomic absorption spectrometry. Determination of copper content
- BS ISO 6101-5:2006 Rubber - Determination of metal content by atomic absorption spectrometry - Determination of iron content
- BS ISO 6101-5:2018 Rubber. Determination of metal content by atomic absorption spectrometry. Determination of iron content
- BS ISO 6101-4:2014 Rubber. Determination of metal content by atomic absorption spectrometry. Determination of manganese content
- BS ISO 11438-8:1993 Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method - Determination of indium content
- BS ISO 11438-5:1993 Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method - Determination of tellurium content
- BS ISO 11438-6:1993 Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method - Determination of thallium content
- BS ISO 11438-7:1993 Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method - Determination of silver content
Association Francaise de Normalisation
- NF A08-705-2*NF EN 14938-2:2010 Copper and copper alloys - Determination of bismuth content - Part 2 : flame atomic absorption spectrometric method (FAAS)
- NF T90-113-1:2007 Water quality - Determination of mercury - Method using atomic absorption spectrometry.
- NF A08-405:1974 Analyse chimique du plomb - Dosage du bismuth - Méthode par absorption atomique (teneurs comprises entre 3 et 30 grammes par tonne)
- NF A20-602*NF ISO 4693:1987 Iron ores. Determination of copper content. Flame atomic absorption spectrometric method.
- NF A08-364*NF EN 29658:1992 Steel. Determination of aluminium content. Flame atomic absorption spectrometric method.
European Committee for Standardization (CEN)
- EN 14938-2:2010 Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS)
Korean Agency for Technology and Standards (KATS)
- KS D ISO 6351-2022 Nickel-Determination of silver, bismuth, cadmium, cobalt, copper,iron, manganese, lead and zinc contents-Flame atomic absorption spectrometric method
- KS D ISO 7523:2012 Nickel-Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents-Electrothermal atomic absorption spectrometric method
- KS D ISO 7523-2022 Nickel-Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents-Electrothermal atomic absorption spectrometric method
- KS D ISO 6351:2012 Nickel-Determination of silver, bismuth, cadmium, cobalt, copper,iron, manganese, lead and zinc contents-Flame atomic absorption spectrometric method
- KS D ISO 3750:2012 Zinc alloys-Determination of magnesium content-Flame atomic absorption spectrometric method
- KS D ISO 6351-2012(2022) Nickel-Determination of silver, bismuth, cadmium, cobalt, copper,iron, manganese, lead and zinc contents-Flame atomic absorption spectrometric method
- KS D ISO 7523-2012(2022) Nickel-Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents-Electrothermal atomic absorption spectrometric method
- KS M ISO 6101-5:2019 Rubber — Determination of metal content by atomic absorption spectrometry — Part 5: Determination of iron content
- KS D ISO 9658-2022 Steel-Determination of aluminium content-Flame atomic absorption spectrometric method
- KS M ISO 6101-5:2009 Rubber-Determination of metal content by atomic absorption spectrometry-Part 5:Determination of iron content
- KS D ISO 9658:2002 Steel-Determination of aluminium content-Flame atomic absorption spectrometric method
- KS D ISO 10698:2002 Steel-Determination of antimony content-Electrothermal atomic absorption spectrometric method
- KS D ISO 11652:2002 Steel and iron-Determination of cobalt content-Flame atomic absorption spectrometric method
GSO
- GSO ISO 6351:2015 Nickel -- Determination of silver, bismuth, cadmium, cobalt, copper, iron, manganese, lead and zinc contents -- Flame atomic absorption spectrometric method
- OS GSO ISO 6351:2015 Nickel -- Determination of silver, bismuth, cadmium, cobalt, copper, iron, manganese, lead and zinc contents -- Flame atomic absorption spectrometric method
- BH GSO ISO 7523:2016 Nickel -- Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents -- Electrothermal atomic absorption spectrometric method
- GSO ISO 10698:2014 Steel -- Determination of antimony content -- Electrothermal atomic absorption spectrometric method
- OS GSO ISO 9658:2015 Steel -- Determination of aluminium content -- Flame atomic absorption spectrometric method
- BH GSO ISO 10698:2016 Steel -- Determination of antimony content -- Electrothermal atomic absorption spectrometric method
- GSO ISO 7523:2013 Nickel -- Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents -- Electrothermal atomic absorption spectrometric method
- GSO ISO 6101-6:2013 Rubber - Determination of metal content by atomic absorption spectrometry - Part 6: Determination of magnesium content
- OS GSO ISO 6101-3:2015 Rubber -- Determination of metal content by atomic absorption spectrometry -- Part 3: Determination of copper content
- GSO ISO 6101-5:2015 Rubber -- Determination of metal content by atomic absorption spectrometry -- Part 5: Determination of iron content
International Organization for Standardization (ISO)
- ISO 6351:1985 Nickel; Determination of silver, bismuth, cadmium, cobalt, copper, iron, manganese, lead and zinc contents; Flame atomic absorption spectrometric method
- ISO 7523:1985 Nickel; Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents; Electrothermal atomic absorption spectrometric method
- ISO 3750:1976 Zinc alloys; Determination of magnesium content; Atomic absorption method
- ISO 6101-6:2018 Rubber - Determination of metal content by atomic absorption spectrometry - Part 6: Determination of magnesium content
- ISO 6101-6:2011 Rubber - Determination of metal content by atomic absorption spectrometry - Part 6: Determination of magnesium content
- ISO/DIS 9658:2023 Steel — Determination of aluminium content — Flame atomic absorption spectrometric method
- ISO/CD 9658:2023 Steel — Determination of aluminium content — Flame atomic absorption spectrometric method
- ISO 9658:1990 Steel; determination of aluminium content; flame atomic absorption spectrometric method
- ISO 10698:1994 Steel - Determination of antimony content - Electrothermal atomic absorption spectrometric method
- ISO 6101-5:2006 Rubber - Determination of metal content by atomic absorption spectrometry - Part 5: Determination of iron content
YU-JUS
- JUS C.A1.701-1987 Nickel metal. Determination ofsilver, bismuth, cadmium, cobalt, copper, iron, manganese, lead and zine contents, Flame atomic absorption speetrometric method
- JUS H.Z1.196-1987 Testing of industrial vvaters. Determination of beryllium content. Atomic absorption method
- JUS H.G8.037-1981 Reagents. Sulphuric acid. Determination ofcadmium content. Flame atomic absorption method
- JUS H.G8.020-1980 Reagents. Hydrochloric acid. Determination oflead content. Flame atomic absorption method
- JUS H.G8.022-1980 Reagents. Hydrochloric acid. Determination ofzinc content. Flame atomic absorption method
- JUS H.G8.023-1980 Reagents. Hidrochloric acid. Determination ofcadmium content. Flame atomic absorption method
- JUS H.G8.036-1981 Reagents. Sulphuric acid. Determination ofzinc content. Flame atomic absorption method
- JUS H.G8.034-1981 Reagents. Sulphuric acid. Determination of lead content. Flame atomic absorption method
- JUS H.G8.214-1985 Reagents. Methanol. Determination ofiron content. Flame atomic absorption method
- JUS H.G8.190-1984 Reagents. di-Sodium tetraborate decahydrate. Determination od calcium content. Flame atomic absor- tion method
- JUS H.G8.021-1980 Reagents. Hydrochloric acid. Determination ofcopper content. Flame atomic absorption method
- JUS H.G8.035-1981 Reagents. Sulphuric acid. Determination of copper content. Flame atomic absorption method
Danish Standards Foundation
- DS/EN 14938-2:2010 Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS)
- DS/EN 29658:1993 Steel. Determination of aluminium content. Flame atomic absorption spectrometric method
AENOR
- UNE-EN 14938-2:2012 Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS)
- UNE 7351:1975 DETERMINATION OF COPPER ALLOYS AND COPPER CONTENT BY ATOMIC ABSORPTION METHOD.
- UNE 7350:1976 DETERMINATION OF COPPER ALLOYS AND COPPER LEAD CONTENT BY ATOMIC ABSORPTION METHOD.
- UNE 37252:1986 LEAD. DETERMINATION OF BISMUTH SPECTROMETRIC METHOD BY ATOMIC ABSORPTION TECHNIQUE.
SCC
- NS-EN 14938-2:2010 Copper and copper alloys — Determination of bismuth content — Part 2: Flame atomic absorption spectrometric method (FAAS)
- DANSK DS/EN 14938-2:2010 Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS)
- DIN EN 14938-2 E:2009 Draft Document - Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS); German version prEN 14938-2:2009
- BS ISO 11438-4:1993 Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method-Determination of tin content
- DANSK DS/ISO 9658:1992 Steel - Determination of aluminium content - Flame atomic absorption spectrometric method
- BS ISO 11438-2:1993 Ferronickel. Determination of trace-element content by electrothermal atomic absorption spectrometric method-Determination of lead content
Lithuanian Standards Office
- LST EN 14938-2-2010 Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS)
German Institute for Standardization
- DIN EN 14938-2:2010-12 Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS); German version EN 14938-2:2010
- DIN EN 1233:1996 Water quality - Determination of chromium - Atomic absorption spectrometric methods; German version EN 1233:1996
ZA-SANS
- SANS 6265:2006 Water - Calcium and magnesium content - Atomic absorption spectrometric method
GOSTR
- GOST R 51942-2019 Gasolines. Determination of lead by atomic absorption spectrometry method
RO-ASRO
- STAS SR 13315-1996 Water quality - Iron determination - Spectrometric method of atomic absorption
- STAS SR EN 27520-1994 Ferronickel. Determination of cobalt content. Flame atomic absorption spectrometric method
TR-TSE
- TS 3177-1978 ZINC ALLOYS — DETERMINATION OF MAGNESIUM CONTENT — ATOMIC ABSORPTION METHOD
Japanese Industrial Standards Committee (JISC)
- JIS K 0400-55-20:1998 Water quality -- Determination of cadmium by atomic absorption spectrometry
KR-KS
- KS M ISO 6101-5-2019 Rubber — Determination of metal content by atomic absorption spectrometry — Part 5: Determination of iron content
VN-TCVN
- TCVN 5732-1993 Crude oil.Determination of vanadium content by atomic absorption spectrocopy
- TCVN 5383-1991 Crude oil.Determination of nikel content by atomic absorption spectroplotometry
- TCVN 7603-2007 Foodstuffs.Determination of cadmium content by atomic absorption spectrophotometry method
- TCVN 7604-2007 Foodstuffs.Determination of mercury content by ftameless atomic absorption spectrophotometric method
- TCVN 7602-2007 Foodstuffs.Determination of lead content by atomic absorption spectrophotometric method
- TCVN 5384-1991 Crude oil.Determination of sodium and potassium content by atomic absorption spectrophotometry
GOST
- GOST 25390-1982 Alumina. Atomic - absorption. Method for determination of calcium exide
NL-NEN
- NEN 6424-1988 Water - Determination of potassium content by atomic absorption spectrometry (flame technique)
- NEN 6451-1980 Water - Determination of copper content by atomic absorption spectrometry (flame technique)
- NEN 6423-1988 Water - Determination of sodium content by atomic absorption spectrometry (flame technique)
- NEN 6460-1981 Water - Determination of iron content by atomic absorption spectrometry (flame technique)
- NEN 6455-1981 Water - Determination of magnesium content by atomic absorption spectrometry (flame technique)
- NEN 6439-1986 Water - Determination of aluminium content by atomic absorption spectrometry (flame technique)
- NEN 6437-1982 Water - Determination of aluminium content by atomic absorption spectrometry (flame technique)
- NEN 6456-1981 Water - Determination of nickel content by atomic absorption spectrometry (flame technique)
- NEN 6462-1982 Water - Determination of silver content by atomic absorption spectrometry (flame technique)
- NEN 6453-1980 Water - Determination of cadmium content by atomic absorption spectrometry (flame technique)
- NEN 6461-1981 Water - Determination of manganese content by atomic absorption spectrometry (flame technique)
- NEN 6446-1980 Water - Determination of calcium content by atomic absorption spectrometry (flame technique)
- NEN 6448-1981 Water - Determination of chromium content by atomic absorption spectrometry (flame technique)
- NEN 6452-1980 Water - Determination of cadmium content by atomic absorption spectrometry (flame technique)
Standard Association of Australia (SAA)
- AS 2769:1985 Waters - Determination of manganese - Flame atomic absorption spectrometric method
PL-PKN
- PN C84081-48-1988 Salt (Sodium chloride) Determination of zinc Atomie absorption method