ASTM D3082-03

Standard Test Method for Boron In Water

SIGNIFICANCE AND USE
Because boron can be both essential and deleterious to plant growth, and because ingestion of large amounts can affect the central nervous system in humans, a method is required to determine its concentration in potable, natural, and wastewaters. This test method provides a means of determining the boron concentration of these waters. The holding time for the samples may be calculated in accordance with Practice D 4841.
Boric acid is used for chemical shim control of neutron flux in a nuclear reactor. This test method serves to determine if the boron concentration is within acceptable limits.
SCOPE
1.1 This test method covers the determination of boron in water and wastewaters by the curcumin colorimetric-extraction method in concentrations between 0.1 and 1.0 mg/L. The range can be extended by dilution of the sample.
1.2 Only dissolved boron is determined. This test method requires that the water sample be filtered through a 0.45-μm membrane filter before analysis.
1.3 This test method is a colorimetric method that is very sensitive to low concentrations of boron in water and requires a relatively small sample volume for analysis.
1.4 Precision and bias were obtained on natural and wastewaters. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.
1.5 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.

General Information

• Status: Historical
• Publication Date: 09-Jan-2003
• ICS: 13.060.50 - Examination of water for chemical substances
• Technical Committee: D19 - Water
• Drafting Committee: D19.05 - Inorganic Constituents in Water

Relations

• Replaces: ASTM D3082-92(1996) - Standard Test Method for Boron In Water
• Effective Date: 10-Jan-2003
• Replaced By: ASTM D3082-09 - Standard Test Method for Boron in Water
• Effective Date: 15-May-2009
• Referred By: ASTM D8006-16 - Standard Guide for Sampling and Analysis of Residential and Commercial Water Supply Wells in Areas of Exploration and Production (E&P) Operations
• Effective Date: 10-Jan-2003
• Referred By: ASTM D1971-16(2021)e1 - Standard Practices for Digestion of Water Samples for Determination of Metals by Flame Atomic Absorption, Graphite Furnace Atomic Absorption, Plasma Emission Spectroscopy, or Plasma Mass Spectrometry
• Effective Date: 10-Jan-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D3082–03
Standard Test Method for
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Boron In Water
This standard is issued under the fixed designation D 3082; 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.
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1. Scope* D 5810 Guide for Spiking into Aqueous Samples
D 5847 Practice for the Writing Quality Control Specifica-
1.1 This test method covers the determination of boron in
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tions for Standard Test Methods for Water Analysis
water and wastewaters by the curcumin colorimetric-extraction
2 E60 Practice for Photometric and Spectrophotometric
method in concentrations between 0.1 and 1.0 mg/L. The
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Methods for Chemical Analysis of Metals
range can be extended by dilution of the sample.
E 200 Practice for Preparation, Standardization, and Stor-
1.2 Only dissolved boron is determined. This test method
age of Standard and Reagent Solutions for Chemical
requires that the water sample be filtered through a 0.45-µm
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Analysis
membrane filter before analysis.
E 275 Practice for Describing and Measuring Performance
1.3 This test method is a colorimetric method that is very
of Ultraviolet, Visible, and Near Infrared Spectrophotom-
sensitive to low concentrations of boron in water and requires
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eters
a relatively small sample volume for analysis.
1.4 Precision and bias were obtained on natural and waste-
3. Terminology
waters. It is the user’s responsibility to ensure the validity of
3.1 Definitions: For definitions of terms used in this test
this test method for waters of untested matrices.
method, refer to Terminology D 1129.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 When a water sample containing soluble boron is
priate safety and health practices and determine the applica-
acidified with hydrochloric acid and evaporated to dryness in
bility of regulatory limitations prior to use.
the presence of curcumin, a red-colored complex called roso-
2. Referenced Documents cyanine is formed. This colored product is taken up in
isopropyl alcohol and is read spectrophotometrically.
2.1 ASTM Standards:
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D 1066 Practice for Sampling Steam
5. Significance and Use
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D 1129 Terminology Relating to Water
5.1 Because boron can be both essential and deleterious to
D 1192 Specification for Equipment for Sampling Water
plantgrowth,andbecauseingestionoflargeamountscanaffect
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and Steam in Closed Conduits
3 the central nervous system in humans, a method is required to
D 1193 Specification for Reagent Water
determine its concentration in potable, natural, and wastewa-
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D 1293 Test Methods for pH of Water
ters. This test method provides a means of determining the
D 2777 Practice for Determination of Precision and Bias of
boron concentration of these waters. The holding time for the
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Applicable Test Methods of Committee D-19 on Water
samplesmaybecalculatedinaccordancewithPracticeD 4841.
D 3370 Practices for Sampling Water from Closed Con-
5.2 Boric acid is used for chemical shim control of neutron
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duits
flux in a nuclear reactor. This test method serves to determine
D 4841 Practice for Estimation of Holding Time for
if the boron concentration is within acceptable limits.
Water Samples Containing Organic and Inorganic Con-
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stituents
6. Interferences
6.1 Nitrate concentrations above 20 mg/Lbegin to interfere.
Hardness levels about 100 mg/L as CaCO give high results
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This test method is under the jurisdiction of ASTM Committee D19 on Water
because of the turbidity caused by the insolubility of the
and is the direct responsibility of Subcommittee D19.05 on Inorganic Constituents
hardness salts in isopropyl alcohol. The turbidity can be
in Water.
Current edition approved Jan. 10, 2003. Published January 2003. Originally
approved in 1972. Last previous edition approved in 1996 as D 3082 – 92 (1996).
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This test method is similar to, but not identical with that appearing in Standard
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Methods for Examination of Water and Wastewater, 13th Ed., American Public Annual Book of ASTM Standards, Vol 03.05.
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Health Association, Washington, DC, pp 69–72. Annual Book of ASTM Standards, Vol 15.05.
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Annual Book of ASTM Standards, Vol 11.01. Annual Book of ASTM Standards, Vol 03.06.
*A Summary of Changes section appears at the end of this standard.
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D3082–03
eliminated by filtering the final solution through a 0.45-µm containing a silica gel
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