BS EN 17130:2019 pdf free.Textiles and textile products – Determination of dimethylfumarate (DMFu), method using gas chromatography.
The sample is cut into small pieces and extracted with acetone in a sealed vial at a defined temperature in an ultrasonic bath. Two different procedures are proposed to be used, depending on the material being tested: a) the first procedure, without purification (concentration of the extracted solution is optional), can be used for samples giving a simple chromatograph, for example, textiles; b) the second procedure, with purification and concentration of the extract, can be used for samples with a complex matrix effect, such as leather. An aliquot of the extract is analysed using a gas chromatograph with mass selective detector.The test specimen shall consist of a single material type (made of textile, leather, polymer or other organic material), which is tested separately. NOTE Up to three test specimens [of equal mass) of the same material type can be tested together taking into consideration the limits of detection and quantification. Cut the homogenous textile ([or leather or polymer or organic material) samples into pieces of about 0,3 cm to 0,5 cm edge length. Desiccant samples may be used without any processing.Weigh (1,0土0,1) g of the sample in a glass vial (6.2), record the mass to the nearest 1 mg, add 1 ml of the solution of internal standard (5.5.2) and 9 ml of acetone, and seal the vial. Extract the sample at (60土5) °C for 1 h士5 min in an ultrasonic bath.Prepare at least 3 calibration solutions of a mixture of dimethyl fumarate and dimethyl maleate, including internal standard, from the working solutions 5.5.4 and 5.5.2, in acetone (5.4), at suitable concentrations for the analysis. Each solution shall contain the internal standard in a concentration that matches the internal standard concentration in the final sample extract (i.e. taking into account any volume reduction in 8.1). An example of calibration measurement is given in A.1.2.Determine the DMFu extracted in 8.1 or 8.2 by GC-MS (6.8). Sufficient separation of the dimethyl fumarate and dimethyl maleate is required in order to avoid false-positive results caused by dimethyl maleate. Examples of chromatographic conditions are given in Annex A.BS EN 17130 pdf download.