ASTM E878-01
(Test Method)Standard Test Method for Determination of Titanium in Iron Ores and Related Materials by Diantipyrylmethane Untraviolet Spectrometry
Standard Test Method for Determination of Titanium in Iron Ores and Related Materials by Diantipyrylmethane Untraviolet Spectrometry
SCOPE
1.1 This test method covers the determination of titanium in iron ores, concentrates, and agglomerates in the concentration range from 0.01 to 6.0% titanium.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:E878–01
Standard Test Method for
Determination of Titanium in Iron Ores and Related
1
Materials by Diantipyrylmethane Ultraviolet Spectrometry
This standard is issued under the fixed designation E 878; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope acid, the color is developed with diantipyrylmethane, and the
absorbance is measured at approximately 385 nm.
1.1 This test method covers the determination of titanium in
iron ores, concentrates, and agglomerates in the concentration
5. Significance and Use
range from 0.01 to 6.0 % titanium.
5.1 This test method is intended to be used for compliance
1.2 This standard does not purport to address all of the
with compositional specifications for titanium content. It is
safety concerns, if any, associated with its use. It is the
assumed that all who use these procedures will be trained
responsibility of the user of this standard to establish appro-
analysts capable of performing common laboratory procedures
priate safety and health practices and determine the applica-
skillfully and safely. It is expected that work will be performed
bility of regulatory limitations prior to use.
in a properly equipped laboratory and that proper waste
2. Referenced Documents disposal procedures will be followed. Appropriate quality
control practices must be followed such as those described in
2.1 ASTM Standards:
2
Guide E 882.
D 1193 Specification for Reagent Water
E 50 Practices forApparatus, Reagents, and Safety Consid-
6. Interferences
erations for Chemical Analysis of Metals, Ores, and
3 6.1 None of the elements normally found in iron ores
Related Materials
3
interfere.
E 135 Terminology Relating to Analytical Chemistry for
Metals, Ores, and Related Materials
7. Reagents and Materials
E 877 PracticeforSamplingandSamplePreparationofIron
4 7.1 Purity of Reagents—Reagent grade chemicals shall be
Ores
used in all tests. Unless otherwise indicated, it is intended that
E 882 Guide for Accountability and Quality Control in the
all reagents conform to the specifications of the Committee on
4
Chemical Analysis Laboratory
Analytical Reagents of the American Chemical Society where
5
such specifications are available. Other grades may be used,
3. Terminology
provided it is first ascertained that the reagent is of sufficient
3.1 For definitions of terms used in this test method, refer to
high purity to permit its use without lessening the accuracy of
Terminology E 135.
the determination.
4. Summary of Test Method 7.2 Purity of Water—Unless otherwise indicated, references
to water shall be understood to mean reagent water as defined
4.1 The sample is decomposed by treatment with hydro-
by Type I of Specification D 1193.
chloric, nitric, and sulfuric acids, or by sintering with sodium
7.3 Ascorbic Acid Solution (10 g/100 mL) (C H O )—
6 8 6
peroxide, or by fusion with sodium tetraborate and sodium
Dissolve 10 g of ascorbic acid (C H O ) in water and dilute to
6 8 6
carbonate. Iron is reduced in an acid medium with ascorbic
100 mL. Prepare fresh as needed.
7.4 Diantipyrylmethane Solution (15 g/L) C H O N ·
23 24 2 4
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This test method is under the jurisdiction of ASTM Committee E01 on H O—Dissolve 15 g of the reagent in about 300 mL of water
2
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
5
lurgical Materials. Reagent Chemicals, American Chemical Society Specifications, American
Current edition approved November 10, 2001. Published November 2001. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Originally published as E 878 – 82. Last previous edition E 878 – 96. listed by the American Chemical Society, see Analar Standards for Laboratory
2
Annual Book of ASTM Standards, Vol 11.01. Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
3
Annual Book of ASTM Standards, Vol 03.05. and National Formulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville,
4
Annual Book of ASTM Standards, Vol 03.06. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E878–01
and 30 mL of (H SO ) (1 + 1) (7.10) and dilute to 1 L with 9. Sampling and Sample Preparation
2 4
water. If a residue remains, filter and store the filtrate in a
9.1 Sampling—The gross sample shall be collected and
brown bottle.
prepared in accordance with Practice E 877.
7.5 Ferric Ammonium Sulfate (100 g/L)—Dissolve 100 g of
9.2 S
...
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