Determination of Trace Iron by Flame Method

Determination of Trace Iron by Flame Method, Total:200 items.

The international standard classification for "Determination of Trace Iron by Flame Method" includes: Ferroalloys , Magnesium and magnesium alloys , Iron ores , Cadmium, cobalt and their alloys .

The Chinese standard classification for "Determination of Trace Iron by Flame Method" includes: Steel and iron alloy analysis method , Light metals and their alloys , Iron ore , Precious metals and its alloy analysis method .

Anhui Provincial Standard of the People's Republic of China

DB34/T 1365-2011 Feeding stuffs-Determination of copper,iron,zinc,manganese-Method using microwave digestion-atomic absorption spectrometry

Jilin Provincial Standard of the People's Republic of China

DB22/T 1873-2013 Determination of copper, iron, zinc and manganese content in feed Microwave digestion-flame atomic absorption spectrometry

Professional Standard - Ferrous Metallurgy

YB/T 6255-2024 Determination of Iron Content in Iron Ore Flame Atomic Absorption Spectrophotometry
YB/T 4533-2016 Ferrophosphorus. Determination of manganese content. Flame atomic absorption spectrometric method

Group Standards of the People's Republic of China

T/CSTM 00058-2018 Nickel alloy—Determination of iron content—Flame atomic absorption spectrometric method
T/CSTM 00811-2025 Determination of bismuth content in iron dust - Flame atomic absorption spectrometry
T/CSTM 00054-2018 Steel and iron—Determination of strontium content— flame atomic absorption spectrometric method
T/CSTM 00050-2018 Steel and iron—Determination of chromium content— Flame atomic absorption spectrometric method

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 6730.58-2017 Iron ores--Determination of vanadium content--Flame atomic absorption spectrometric method
GB/T 6730.58-2004 Iron ores—Determination of vanadium content—Flame atomic absorption spectrometric methods
GB/T 6730.55-2019 Iron ores-Determination of tin content-Flame atomic absorption spectrometric method
GB/T 5687.10-2006 Ferrochromium - Determination of manganese content - Flame atomic absorption sspectrometric method
GB/T 4333.8-2022 Ferrosilicon—Determination of calcium content—Flame atomic absorption spectrometry
GB/T 6730.55-2004 Iron ores—Determination of tin content—Flame atomic absorption spectrometric method
GB/T 6730.56-2019 Iron ores—Determination of aluminum content—Flame atomic absorption spectrometric method
GB/T 6730.57-2004 Iron ores - Determination of chromium content - Flame atomic absorption spectrometric method
GB/T 6730.59-2017 Iron ores--Determination of manganese content--Flame atomic absorption spectrometric method
GB/T 5059.3-2014 Ferromolybdenum�Determination of copper content�The flame atomic absorption spectrometric method
SPC GB/T 6730.55-2019 Iron ores -- Determination of tin content -- Flame atomic absorption spectrometric method (TEXT OF DOCUMENT IS IN CHINESE)
GB/T 6730.52-2018 Iron ores—Determination of cobalt content—Flame atomic absorption spectrometric method
GB/T 21933.3-2008 Ferronickel - Determination of cobalt content - Flame atomic absorption spectrometric method
GB/T 6730.14-2017 Iron ores - Determination of calcium content - Flame atomic absorption spectrometric method
GB/T 6730.56-2004 Iron ores—Determination of aluminum content—Flame atomic absorption spectrometric method
GB/T 6730.60-2005 Iron ores - Determination of nickel content - Flame atomic absorption spectrometric method
GB/T 6730.53-2004 Iron ores—Determination of zinc content—Flame atomic absorption spectrometric method
GB/T 6730.52-2004 Iron ores—Determination of cobalt content—Flame atomic absorption spectrometric methnod
GB/T 6730.75-2017 Iron ores - Determination of sodium content - Flame atomic absorption spectrometric method
GB/T 6730.74-2017 Iron ores--Determination of magnesium content--Flame atomic absorption spectrometric method
GB/T 6730.54-2004 Iron ores—Determination of lead content—Flame atomic absorption spectrometric method
GB/T 6730.36-2016 Iron ores―Determination of copper content―Flame atomic absorption spectrometric method
GB/T 6730.60-2022 Iron ores—Determination of nickel content—Flame atomic absorption spectrometric method
GB/T 6730.49-2017 Iron ores - Determination of potassium content - Flame atomic absorption spectrometric method
GB/T 6730.59-2005 Iron ores—Determination of manganese content—Flame atomic absorption spectrometric method
GB/T 11066.3-1989 Gold-Determination of iron content-Flame atomic absorption spectrometric method

Czech Standards Institute (UNMZ)

CSN 68 4133-1986 Determination of small amount of sodi- m, potassium, calcium and strontium by láme photometry
CSN ISO 9647:1993 Steel and iron. Determination of vanadium content. Flame atomic absorption spectrometric method

Netherlands Institute for Standardization

NEN 6460-1981 Water - Determination of iron content by atomic absorption spectrometry (flame technique)

Gosstandart of Russia

GOST R ISO 4943-2010 Steel and iron. Determination of copper content. Flame atomic absorption spectrometric method
GOST R ISO 4940-2010 Steel and iron. Determination of nickel content. Flame atomic absorption spectrometric method

National Standardisation Body (ASRO)

STAS SR EN 27520-1994 Ferronickel. Determination of cobalt content. Flame atomic absorption spectrometric method
STAS SR ISO 9647:1989 Steel and iron. Determination of vanadium content. Flame atomic; absorption spectrometric method
SR ISO 4139:1995 Ferrosilicon. Determination of aluminium content. Flame atomic absorption spectrometric method
STAS SR 8934-10-1996 Sodium chloride. Determination of iron content. Flame Atomic Absorption Sptectrometric Method

British Standards Institution (BSI)

BS ISO 13313:2006 Iron ores - Determination of sodium - Flame atomic absorption spectrometric method
BS ISO 10204:2015 Iron ores. Determination of magnesium. Flame atomic absorption spectrometric method
BS ISO 10204:2006 Iron ores - Determination of magnesium - Flame atomic absorption spectrometric method
BS ISO 13313:2017 Iron ores. Determination of sodium. Flame atomic absorption spectrometric method
BS ISO 13311:1997 Iron ores - Determination of lead content - Flame atomic absorption spectrometric method
BS ISO 4688-1:2006 Iron ores - Determination of aluminium - Flame atomic absorption spectrometric method
BS ISO 13312:2017 Iron ores. Determination of potassium. Flame atomic absorption spectrometric method
BS EN ISO 10700:1995(2000) Steel and iron — Determination of manganese content — Flame atomic absorption spectrometric method
BS ISO 10203:2017 Iron ores - Determination of calcium - Flame atomic absorption spectrometric method
BS ISO 13310:1997 Iron ores - Determination of zinc content - Flame atomic absorption spectrometric method
BS ISO 13312:2006 Iron ores - Determination of potassium - Flame atomic absorption spectrometric method
BS ISO 15634:2015 Iron ores. Determination of chromium content. Flame atomic absorption spectrometric method
BS ISO 10203:2006 Iron ores - Determination of calcium - Flame atomic absorption spectrometric method
BS ISO 10203:2015 Iron ores. Determination of calcium. Flame atomic absorption spectrometric method
BS ISO 15634:2005 Iron ores - Determination of chromium content - Flame atomic absorption spectrometric method
BS ISO 9682-1:2009 Iron ores - Determination of manganese content - Flame atomic absorption spectrometric method
BS EN ISO 11652:2022 Steel and iron. Determination of cobalt content. Flame atomic absorption spectrometric method (ISO 11652:1997)
BS ISO 13312:1997 Iron ores. Determination of potassium content. Flame atomic absorption spectrometric method
BS ISO 13311:1997(2000) Iron ores — Determination of lead content — Flame atomic absorption spectrometric method
BS ISO 13310:1997(1999) Iron ores — Determination of zinc content — Flame atomic absorption spectrometric method
BS ISO 11533:1996 Iron ores. Determination of cobalt content. Flame atomic absorption spectrometric method
BS ISO 9683-2:2009 Iron ores - Determination of vanadium content - Flame atomic absorption spectrometric methods
BS 7020-10.2:1988 Analysis of iron ores - Methods for the determination of copper content - Flame atomic absorption spectrometric method
BS ISO 13313:1997 Iron ores. Determination of sodium content. Flame atomic absorption spectrometric method
BS ISO 11534:2007 Iron ores - Determination of tin - Flame atomic absorption spectrometric method
BS EN ISO 4943:2022 Steel and cast iron. Determination of copper content. Flame atomic absorption spectrometric method

Korean Agency for Technology and Standards (KATS)

KS D ISO 4940:2002 Steel and cast iron－Determination of nickel content－Flame atomic absorption spectrometric method
KS D ISO 7520:2012 Ferronickel－Determination of cobalt content－Flame atomic absorption spectrometric method
KS D ISO 4943:2002 Steel and cast iron－Determination of copper content－Flame atomic absorption spectrometric method
KS D ISO 9647-2002(2017) Steel and iron — Determination of vanadium content — Flame atomic absorption spectrometric method
KS D ISO 10700-2023 Steel and iron — Determination of manganese content — Flame atomic absorption spectrometric method
KS D ISO 10138-2022 Steel and iron－Determination of chromium content－Flame atomic absorption spectrometric method
KS E ISO 15634:2012 Iron ores-Determination of chromium content-Flame atomic absorption spectrometric method
KS D ISO 4139-2002(2017) Metallic and other non-organic coatings－Measurement of coating thicknesses－Fizeau multiple-beam interferometry method
KS E ISO 10204:2007 Iron ores－Determination of magnesium－Flame atomic absorption spectrometric method
KS E ISO 10203:2007 Iron ores－Determination of calcium－Flame atomic absorption spectrometric method
KS D ISO 7520-2022 Ferronickel－Determination of cobalt content－Flame atomic absorption spectrometric method
KS E ISO 11534:2007 Iron ores－Determination of tin－Flame atomic absorption spectrometric method
KS E 3918-2018(2023) Iron ores — Determination of titanium content — Flame atomic absorption spectrometric method
KS E ISO 15634-2022 Iron ores — Determination of chromium content — Flame atomic absorption spectrometric method
KS E ISO 11533:2011 Iron ores－Determination of cobalt－Flame atomic absorption spectrometric method
KS E 3918-2023 Iron ores — Determination of titanium content — Flame atomic absorption spectrometric method
KS E ISO 13312-2022 Iron ores — Determination of potassium content — Flame atomic absorption spectrometric method
KS D ISO 4693-2010 Iron ores－Determination of copper content－Flame atomic absorption spectrometric method
KS E ISO 13311-2003(2018) Iron ores－Determination of lead content－Flame atomic absorption spectrometric method
KS E ISO 13310-2003(2018) Iron ores－Determination of zinc content－Flame atomic absorption spectrometric method
KS E 3918-2018 Iron ores — Determination of titanium content — Flame atomic absorption spectrometric method
KS E ISO 13312:2022 Iron ores — Determination of potassium content — Flame atomic absorption spectrometric method
KS E ISO 13310-2023 Iron ores — Determination of zinc content — Flame atomic absorption spectrometric method
KS E ISO 15634:2022 Iron ores — Determination of chromium content — Flame atomic absorption spectrometric method
KS D ISO 4943-2002(2022) Steel and cast iron－Determination of copper content－Flame atomic absorption spectrometric method
KS D ISO 4139:2002 Ferrosilicon－Determination of aluminium content－Flame atomic absorption spectrometric method
KS D ISO 15353:2002 Steel and iron－Determination of tin content －Flame atomic absorption spectrometric method(extraction as Sn－SCN)
KS E ISO 13311-2023 Iron ores — Determination of lead content — Flame atomic absorption spectrometric method
KS E ISO 15634:2017 Iron ores－Determination of chromium content－Flame atomic absorption spectrometric method
KS D ISO 9647:2002 Steel and iron — Determination of vanadium content — Flame atomic absorption spectrometric method
KS D ISO 7520-2012(2022) Ferronickel－Determination of cobalt content－Flame atomic absorption spectrometric method
KS E ISO 15634-2017 Iron ores－Determination of chromium content－Flame atomic absorption spectrometric method
KS D ISO 4940-2002(2022) Steel and cast iron－Determination of nickel content－Flame atomic absorption spectrometric method
KS D ISO 4943-2022 Steel and cast iron－Determination of copper content－Flame atomic absorption spectrometric method

Yugoslav Association for Standardization

JUS H.G8.214-1985 Reagents. Methanol. Determination ofiron content. Flame atomic absorption method
JUS B.G8.110-1989 Methods of chemical testing of iron ores DETERMINATION OF MAGNESIUM CONTENT Atomic absorption method
JUS B.G8.109-1989 Iron ores. Deternination of calcium cootent. Flame atomic absorpticm spectro-metric method
JUS B.G8.107-1989 Iran ores. Determination of aluminium content. Flame atomic absorption spectro-metric method
JUS H.G8.490-1991 Pure chemicals Potassium permanganate DETERMINATION OF LEAD, COPPER AND IRON CONTENT Atomic absorption method

International Organization for Standardization (ISO)

ISO 7520:1985 Ferronickel; Determination of cobalt content; Flame atomic absorption spectrometric method
ISO 15634:2005 Iron ores — Determination of chromium content — Flame atomic absorption spectrometric method
ISO 15634:2015 Iron ores - Determination of chromium content - Flame atomic absorption spectrometric method
ISO 4688:1980 Iron ores — Determination of aluminium content — Flame atomic absorption spectrometric method
ISO/TR 10281:1990 Steel and iron; determination of manganese content; flame atomic absorption spectrometric method
ISO 9684:1991 Iron ores — Determination of vanadium content — Flame atomic absorption spectrometric methods
ISO 11534:2006 Iron ores - Determination of tin - Flame atomic absorption spectrometric method
ISO 4693:1986 Iron ores; Determination of copper content; Flame atomic absorption spectrometric method
ISO 10204:1992 Iron ores; determination of magnesium content; flame atomic absorption spectrometric method
ISO 11652:1997 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method
ISO 13310:1997 Iron ores - Determination of zinc content - Flame atomic absorption spectrometric method
ISO 10700:1994 Steel and iron - Determination of manganese content - Flame atomic absorption spectrometric method
ISO 13312:1997 Iron ores - Determination of potassium content - Flame atomic absorption spectrometric method
ISO 4943:2022 Steel and cast iron — Determination of copper content — Flame atomic absorption spectrometric method
ISO 10138:1991 Steel and iron; determination of chromium content; flame atomic absorption spectrometric method
ISO 11534:1998 Iron ores - Determination of tin content - Flame atomic absorption spectrometric method
ISO 9647:1989 Steel and iron; determination of vanadium content; flame atomic absorption spectrometric method
ISO 11533:1996 Iron ores - Determination of cobalt content - Flame atomic absorption spectrometric method
ISO 10203:1992 Iron ores; determination of calcium content; flame atomic absorption spectrometric method
ISO 13313:1997 Iron ores - Determination of sodium content - Flame atomic absorption spectrometric method
ISO 13311:1997 Iron ores - Determination of lead content - Flame atomic absorption spectrometric method
ISO 4940:2025 Steel and cast iron - Determination of nickel content - Flame atomic absorption spectrometric method
ISO 11652 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method
ISO/CD 4940:2023 Steel and cast iron — Determination of nickel content — Flame atomic absorption spectrometric method

Spanish Association for Standardization (UNE)

UNE-EN ISO 11652:2023 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method (ISO 11652:1997)
UNE 35056-1:1983 FERROSILICON. DETERMINATION OF ALUMINIUM CONTENT. FLAME ATOMIC ABSORPTION SPECTROMETRIC METHOD
UNE 22136:1988 IRON ORES. DETERMINATION OF ALUMINIUM CONTENT. FLAME ATOMIC ABSORPTION SPECTROMETRIC METHOD.
UNE 22137:1988 IRON ORES. DETERMINATION OF MANGANESE CONTENT. FLAME ATOMIC ABSORPTION SPECTROMETRIC METHOD

GCC Standardization Organization

GSO ISO 4139:2013 Ferrosilicon – Determination of aluminium content – Flame atomic absorption spectrometric method
GSO ISO 11652:2014 Steel and iron -- Determination of cobalt content -- Flame atomic absorption spectrometric method
GSO ISO 10138:2015 Steel and iron -- Determination of chromium content -- Flame atomic absorption spectrometric method
GSO ISO 9647:2016 Steel and iron -- Determination of vanadium content -- Flame atomic absorption spectrometric method
GSO ISO 4940:2015 Steel and cast iron -- Determination of nickel content -- Flame atomic absorption spectrometric method
GSO ISO 10700:2014 Steel and iron -- Determination of manganese content -- Flame atomic absorption spectrometric method
GSO ISO 7520:2015 Ferronickel -- Determination of cobalt content -- Flame atomic absorption spectrometric method
GSO ISO 13313:2014 Iron ores -- Determination of sodium -- Flame atomic absorption spectrometric method
GSO ISO 15634:2013 Iron ores -- Determination of chromium content -- Flame atomic absorption spectrometric method
GSO ISO 11533:2013 Iron ores -- Determination of cobalt -- Flame atomic absorption spectrometric method
GSO ISO 13310:2013 Iron ores -- Determination of zinc content -- Flame atomic absorption spectrometric method
GSO ISO 13311:2013 Iron ores -- Determination of lead content -- Flame atomic absorption spectrometric method
GSO ISO 4943:2015 Steel and cast iron -- Determination of copper content -- Flame atomic absorption spectrometric method

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 10700:2014 Steel and iron -- Determination of manganese content -- Flame atomic absorption spectrometric method
OS GSO ISO 9647:2016 Steel and iron -- Determination of vanadium content -- Flame atomic absorption spectrometric method
OS GSO ISO 10138:2015 Steel and iron -- Determination of chromium content -- Flame atomic absorption spectrometric method
OS GSO ISO 15634:2013 Iron ores -- Determination of chromium content -- Flame atomic absorption spectrometric method
OS GSO ISO 13311:2013 Iron ores -- Determination of lead content -- Flame atomic absorption spectrometric method
OS GSO ISO 4940:2015 Steel and cast iron -- Determination of nickel content -- Flame atomic absorption spectrometric method

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 4139:2016 Ferrosilicon – Determination of aluminium content – Flame atomic absorption spectrometric method
BH GSO ISO 11652:2016 Steel and iron -- Determination of cobalt content -- Flame atomic absorption spectrometric method
BH GSO ISO 7520:2016 Ferronickel -- Determination of cobalt content -- Flame atomic absorption spectrometric method
BH GSO ISO 13310:2016 Iron ores -- Determination of zinc content -- Flame atomic absorption spectrometric method

Danish Standards Foundation

DS/ISO 7520:1993 Ferronickel - Determination of cobalt content - Flame atomic absorption spectrometric method
DS/EN 27520:1993 Ferronickel. Determination of cobalt content. Flame atomic absorption spectrometric method
DS/ISO 11652:2021 Steel and iron – Determination of cobalt content – Flame atomic absorption spectrometric method
DANSK DS/ISO 7520:1992 Ferronickel - Determination of cobalt content - Flame atomic absorption spectrometric method
DANSK DS/EN 27520:1992 Ferronickel - Determination of cobalt content - Flame atomic absorption spectrometric method
DS/EN ISO 10700:1996 Steel and iron - Determination of manganese content - Flame atomic absorption spectrometric method
DANSK DS/ISO 11652:2021 Steel and iron – Determination of cobalt content – Flame atomic absorption spectrometric method
DS/ISO 4943:1991 Steel and cast iron. Determination of copper content. Flame atomic absorption spectrometric method
DS/EN 24 943:1991 Steel and cast iron - Determination of copper content - Flame atomic absorption spectrometric method
DANSK DS/EN 24943:1990 Steel and cast iron – Determination of copper content – Flame atomic absorption spectrometric method
DANSK DS/EN ISO 10700:1996 Steel and iron - Determination of manganese content - Flame atomic absorption spectrometric method
DANSK DS/ISO 4943:2022 Steel and cast iron – Determination of copper content – Flame atomic absorption spectrometric method

Association Francaise de Normalisation

NF A06-596*NF EN ISO 11652:2022 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method
NF A10-607*NF EN 27520:1992 Ferronickel. Determination of cobalt content. Flame atomic absorption spectrometric method.
NF A20-605:1984 Iron ores. Determination of aluminium content. Flame atomic absorption spectrometric method.
NF A20-602*NF ISO 4693:1987 Iron ores. Determination of copper content. Flame atomic absorption spectrometric method.
NF EN ISO 4943:2022 Steels and cast irons - Determination of copper content - Flame atomic absorption spectrometry method
NF A08-336*NF EN 24943:1990 Steel and cast iron. Determination of copper content. Flame atomic absorption spectrometric method.

German Institute for Standardization

DIN EN ISO 11652:2022-07 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method (ISO 11652:1997); German version EN ISO 11652:2022
DIN EN 24943:1992 Determination of copper content of steel and cast iron by flame atomic absorption spectrometry (ISO 4943:1985); german version EN 24943:1990
DIN EN 27520:1992 Ferronickel; determination of cobalt content; flame atomic absorption spectrometric method (ISO 7520:1985); german version EN 27520:1991
DIN EN ISO 10700:1996 Steel and iron - Determination of manganese content - Flame atomic absorption spectrometric method (ISO 10700:1994); German version EN ISO 10700:1995

COMMISSION FOR THE STANDARDS, METROLOGY AND QUALITY OF VIETNAM (STAMEQ)

TCVN 7793-2007 Iron ores.Determination of zinc content.Flame atomic absorption spectrometric method
TCVN 7794-2007 Iron ores.Determination of lead content.Flame atomic absorption spectrometric method
TCVN 1673-2007 Iron ores.Determination of chromium content.Flame atomic absorption spectrometric method
TCVN 4156-2009 Ferrosilicon.Determination of aluminium content.Flame atomic absorption spectrometric method

Swedish Institute for Standards

SIS SS-EN 27 520-1992 Ferronickel — Determination of cobalt content — Flame atomic absorption spectrometric method
SS-EN 10181:2019 Steels - Determination of lead content - Flame atomic absorption spectrometric method (FAAS)
SS-EN 10188:2024 Steels and cast irons - Determination of chromium content - Flame atomic absorption spectrometric method (FAAS)

Ente Nazionale Italiano di Unificazione

UNI ISO 4139:1991 Ferrosilicon. Determination of aluminium content. Flame atomic absorption spectrometric method.
UNI EN ISO 11652:2022 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method
UNI ISO 4693:1991 Iron ores. Determination of copper content. Flame atomic absorption spectrometric method.

Bureau of Indian Standards

IS 17325-2020 Ferronickel — Determination of Cobalt Content — Flame Atomic Absorption Spectrometric Method

Lithuanian Standards Office

LST EN ISO 10700:2000 Steel and iron - Determination of manganese content - Flame atomic spectrometric method (ISO 10700:1994)

European Committee for Standardization (CEN)

EN ISO 11652:2022 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method (ISO 11652:1997)
EN ISO 9647:2022 Steel - Determination of vanadium content - Flame atomic absorption spectrometric method (FAAS) (ISO 9647:2020)
EN 27520:1991 Ferronickel - Determination of Cobalt Content - Flame Atomic Absorption Spectrometric Method
EN ISO 4943:2022 Steel and cast iron - Determination of copper content - Flame atomic absorption spectrometric method (ISO 4943:2022)

Austrian Standards

ONORM EN 27520-1992 Ferronickel - Determination of cobalt content -Flame atomic absorption spectrometric method

Standards Norway

NS-EN ISO 10700:1995 Steel and iron — Determination of manganese content — Flame atomic spectrometric method (ISO 10700:1994)

Finnish Standards Institute

SFS-EN ISO 10700:1996 Steel and iron. Determination of manganese content. Flame atomic spectrometric method (ISO 10700:1994)

Others: Determination of Iron by Flame Atomic Absorption Spectrometry,Determination of Trace Iron by Spectrophotometer,Determination of Trace Iron by Flame Method,Determination of iron by flame method,Determination of Iron and Manganese by Flame Atomic Absorption Spectrophotometry,Determination of iron by flame atomization method,Determination of trace iron content in water by o-phenanthroline method,Determination of Trace Element Flame by Atomic Absorption Spectrometry,Determination of Iron Content by Flame Atomic Absorption Spectrometry,Determination of Trace Iron by Bipyridine Spectrophotometry