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AS 2769-1985
$47.81
Waters — determination of manganese — Flame atomic absorption spectrometric method
Sets out a flame atomic absorption method for the determination of manganese in natural and waste waters in the range of 0.005 mg/L to 5 mg/L. Manganese in the range of 0.05 mg/L to 5 mg/L can be determined by direct aspiration while the range 0.005 mg/L to 0.05 mg/L requires a pre-concentration step.
Table of contents
Header
About this publication
PREFACE
1 SCOPE
2 APPLICATION
3 REFERENCED DOCUMENTS
4 PRINCIPLE
4.1 Direct aspiration
4.2 Extraction procedure
5 REACTION
6 REAGENTS
6.1 General
6.2 Solids
6.2.1 Sodium sulphate (anhydrous)
6.3 Solutions
6.3.1 Nitric acid (ϱ20 1420 kg/m3)
6.3.2 Nitric acid (200 mL/L)
6.3.3 Sodium hydroxide (200 g/L)
6.3.4 Hydrochloric acid (100 mL/L)
6.3.5 Sodium diethyldithiocarbamate solution (50 g/L)
6.3.6 Ammonium acetate solution (500 g/L)
6.3.7 Methyl red indicator (1 g/L)
6.3.8 Diisobutyl ketone (2,6-dimethyl-heptan-4-one)
6.4 Standard solutions
6.4.1 Stock manganese solution (1.000 g Mn/L)
6.4.2 Standard manganese solution (100 mg Mn/L)
6.4.3 Standard manganese solution (10.0 mg Mn/L)
6.4.4 Standard manganese solution (1.00 mg Mn/L)
7 APPARATUS
7.1 Glassware
7.2 Flame atomic absorption spectrometer
7.2.1 Manganese hollow cathode lamp
7.2.2 Support gas
7.2.3 Fuel gas—acetylene
8 SAMPLES AND SAMPLING
9 PROCEDURE
9.1 Optimization
9.2 Calibration
9.2.1 General
9.2.2 Direct aspiration-standards
9.2.3 Extraction procedure-standards
9.3 Determination
9.3.1 Preservative Blank
9.3.2 Direct aspiration
9.3.3 Extraction procedure
10 CALCULATIONS
11 PRECISION
12 REPORT
APPENDIX A
A1 SCOPE
A2 PRINCIPLE
A3 REAGENTS
A3.1 Hydrochloric acid (ϱ20 1160 kg/m3)
A3.2 Sulphuric acid (ϱ20 1840 kg/m3)
A3.3 Nitric acid (ϱ20 1420 kg/m3)
A4 PROCEDURE
A5 CALCULATION
A6 REPORT
Cited references in this standard
Content history
DR 79166
AS 2769-1985 REC:2017
Please select a variation to view its description.
| Published | 04/04/1985 |
|---|---|
| Pages | 5 |
Please select a variation to view its pdf.
