BS EN 14362-1-2012 禁用偶氮染料释放芳香胺欧盟测试方法(4)

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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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)

8 Test specimen sampling and preparation

8.1 General

The test specimen shall be selected based on the following criteria: Parts of the textile article;

Nature of the fibre components (fibre composition); Printed materials; Colours.

Prepare the test specimen by cutting in order to obtain a total mass of 1 g. For specimens to be submitted to colorant extraction (9.1) cut into strips (if apparatus described in 7.1 is used) or cut into small pieces if other apparatus is used or for specimens to be submitted only to reductive cleavage (9.3).

8.2 Textile article

If the textile article is a semi-manufactured product, such as yarns, fabrics, etc., cut out test specimens from it. If the textile article is composed of several parts of textile products, such as a garment, cut out test specimens from all the parts of the textile article that have direct and prolonged contact to skin or mouth, which can be: principal fabric(s); lining(s); pocket fabric(s); embroideries;

label(s) for textile article; drawstring(s); fastener(s); false fur; sewing threads.

If the mass of some parts (e.g. labels, sewing threads, embroideries of small size) does not reach the mass (1 g) to be tested, gather identical parts when possible. If the total mass of material is below 0,5 g, this material is defined as a minor component. (See NOTE 2, Annex C.) Below 0,2 g of material the analysis is omitted. Embroideries shall be weighed with the ground fabric.

8.3 Fibre composition

textile components so that the possible use of disperse dyestuffs can be determined. Table 2 summarizes the four cases:

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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)

Table 2 — Application of colorant extraction for disperse dyes (9.1) in relation to the fibre nature

Nature of fibre

Use of disperse

dyestuffs

No

Cases

Colorant extraction for disperse dyes (9.1)

necessary?

No

Natural fibre A

No B No

Man-made fibre

Undetermined C

Yes

Yes D Yes

NOTE

If a fibre is not dyed, the fibre shall not be tested.

Categories of dyestuffs used in either natural or man-made fibres are explained in Annex D.

8.4 Case of the fibre blends

In the case when fibres of different types are mixed, refer to Table 3 in order to decide if application of the colorant extraction for disperse dyes (9.1) shall be applied.

Table 3 — Application of colorant extraction for disperse dyes (9.1) in relation to the fibre blends Colorant extraction for disperse Other component of the blend dyes (9.1) necessary?

A B C D

A

Component

of the blend

B C D

NOTE

See Table 2 for meanings of A, B, C and D.

No No Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

8.5 Printed materials

If material is printed with pigments (Annex D) the method in 9.2 has to be used.

8.6 Colours

8.6.1 General All colours shall be tested.

NOTE

"White" is not considered as "colour" and therefore "white" parts do not have to be tested.

8.6.2 Case of colour gathering

Up to three colours may be tested together.

In order to gather three colours, the following rules shall be applied. The rules have been listed in order of

preference:

Select the three colours from the same part of the textile article;

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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)

If the three colours do not come from the same part of the textile article, select these three colours from

textile parts made of the same type of textile fibre; If the three colours do not come from the same part of the textile article and do not come from the same

type of textile fibre, select these three colours from textile parts on which the same procedure shall be applied. 8.6.3 Preparation of the three colour test specimen

Each colour shall have approximately the same weight in order to obtain the total mass of 1 g.

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