BS ISO 17280:2015
$102.76
Surface active agents. Determination of 1,4-dioxan residues in surfactants obtained from epoxyethane by gas chromatography
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 18 |
This International Standard provides a method for the determination of 1,4-dioxane residues in surfactants which are synthesized from epoxyethane, such as alkyl ether sulfates and alcohol ethoxylates.
The method is applicable for samples containing 1,4-dioxane more than 5 mg/kg. For samples containing 1,4-dioxane more than 100 mg/kg, the sample solutions should be diluted to appropriate concentration.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Principle 4 Reagents 4.1 1,4-Dioxane, purity 99,5 % minimum. 4.2 4-Methyl-1,3-dioxane, purity 98 % minimum. 4.3 N, N-dimethylformamide (DMF). |
| 8 | 4.4 Carrier gas: nitrogen or helium, purity 99,99 % minimum. 5 Apparatus 5.1 Analytical balance, 0,1 mg readability. 5.2 Gas chromatography system, attached with temperature programmed device and flame ionization detector (FID). 5.3 Head space sampling unit 5.4 20 ml crimped top glass vials, sealing pliers and sealing clamp suitable for head space unit. 5.5 Septum and crimped tops, lined with aluminium or PTFE, for closing the vials. 5.6 Sealing pliers, for the vials. 5.7 Capillary column, capable of the separation characteristics shown in Figure 2. 5.8 Volumetric flasks, 50 ml and 100 ml capacity. 5.9 Gas tight syringes or glass pipettes, 1 ml ± 0,01 ml capacity. 6 Preparation of calibration solutions 6.1 Calibration solution A |
| 9 | 6.2 Calibration solution B 7 Procedure 7.1 Preparation of the test sample 7.2 Standard addition procedure 7.2.1 Preparation of test sample solutions |
| 10 | 7.2.2 Determination 7.2.3 Expression of results 7.3 Relative response factor procedure 7.3.1 Determination of relative response factor |
| 11 | 7.3.2 Preparation of test sample solutions 7.3.3 Determination 7.3.4 Expression of results 8 Chromatographic conditions |
| 12 | 9 Evaluation 9.1 General |
| 13 | 9.2 Identification 9.3 Calculation 10 Precision 10.1 Repeatability limit 10.2 Reproducibility limit 11 Test report |
| 14 | Annex A (informative) Statistical data from the ring carried out |
