禁用偶氮染料释放芳香胺欧盟测试方法,替代原-1&-2方法。
BS EN 14362-1:2012
EN 14362-1:2012 (E)
coil condenser NS 29/32;
a hook, made from an inert material to hold the specimen in place so that the condensed solvent drips
onto it; 100 ml round bottom flask NS 29/32; heating source.
Figure 1 — Apparatus
NOTE
Similar apparatus may be used, if the same results are obtained.
7.2 Ultrasonic bath, controllable heating.
7.3 Reaction vessel (20 ml to 50 ml) of heat-resistant glass, with tight closure. 7.4 Heating source that generates (70 ± 2) °C.
7.5 Glass or polypropylene column, inside diameter 25 mm to 30 mm, length 130 mm to 150 mm, packed with 20 g of diatomaceous earth (6.8), fitted with glass fibre filter at the outlet.
The diatomaceous earth columns are either bought pre-packed and used as is, or 20 g of diatomaceous earth can be packed into a glass or polypropylene column of the dimensions given. 7.6
Vacuum rotary evaporator with vacuum control and water bath.
NOTE Other kinds of evaporation apparatus may be used, e.g. a water bath with a controlled flow of nitrogen over the liquid.
7.7 Pipettes in required sizes or variables pipettes.
7.8 Chromatographic equipment selected from the following:
7.8.1 Thin layer chromatography (TLC) or high performance thin layer chromatography (HPTLC) equipment, including relevant detection.
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7.8.2 High performance liquid chromatography (HPLC) with gradient elution and diode array detector (DAD) or mass selective detector (MS).
7.8.3 Gas chromatography (GC) with flame ionisation detector (FID) or mass selective detector (MS). 7.8.4 Capillary electrophoresis (CE) with diode array detector (DAD).
NOTE
A description of the chromatographic equipment is given in Annex A.
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