可迁移元素检验作业指导书.docx

1、可迁移元素检验作业指导书Migration of Certain Elements可迁移元素的测定 适用范围:与食品和口部接触的玩具、化妆品类玩具、归入玩具类的书写工具、6岁以下儿童玩具的可接触部分。Suitable for: food and mouth contact toys, cosmetics of toys, classified as toys of writing tools, children under 6 years old toys can be part of the contact. Reference Standard 参考标准：欧标 Principle 测试原理

2、Simulation material has been swallowed stay in contact with stomach acid in the digestive tract of the process 模拟物质被吞咽后与胃酸接触逗留在消化道内的过程。Specific test method：Simulation test material is sucking on a, chewing and swallowing and stomach acid reaction after process in 37 0 C (similar to the human body te

3、mperature) with 0.07 mol/l hydrochloric acid (similar to human body of gastric acidity) extraction test samples for two hours, then determined extract which of the heavy metal element content.具体测试方法为：模拟测试材料被吮食、咀嚼和吞咽后与胃酸反应的过程在37 0C下（类似人体体温）用0.07mol/l盐酸（类似人体胃酸的酸度）萃取测试样品两小时，然后测定萃取液其中重金属元素含量。 Testing Pa

4、rt测试部分的选择For the laboratory sample test must be sales status, or offering for sale state of toys.供测试的实验室样品必须是销售状态或供销售状态的玩具。Testing part must be from a single sample toys on the contact take part.测试部分必须从一个单独的玩具试样上的可接触部分上取下。Each material must be individually test, unless the physical separation method

5、 cant separate samples.每种材料必须单独测试，除非采用物理分离方法不能分开的样品。Material shortage of 10 mg testing part does not need to test.材料不足10mg的测试部分不需测试。 Apparatus仪器Normal laboratory apparatus and常规的实验仪器及下列仪器:1) Plain weave wire cloth stainless steel metal sieve, of nominal aperture size 0,5 mm and tolerances as indicat

6、ed in Table B.1 in Annex B. 平纹金属丝网不锈钢金属筛，标称筛网大小为0.5mm，公差参考EN71-3附录表B的B.12) A means of measuring pH, with an accuracy of 0,2 pH units. Cross-contamination shall be prevented. pH值测量仪器，精度为0.2pH个单位，应防止交叉污染。3) Membrane filter, with a pore size of 0,45 m. 滤膜过滤器，孔径为0.45m.4) Centrifuge, capable of centrifug

7、ing at (5 000 500) g2). 离心机，分离能力达（5000 500）g2.5) A means to agitate the mixture, at a temperature of (37 2) C. 搅拌混合物的工具，温度恒定为(37 2) C6) A selection of containers of gross volume, between 1,6 times and 5,0 times that of the volume of hydrochloric acid extractant. 一套化学容器，总容量为盐酸溶液提取剂溶液的1.6-5.0倍。一、 Coat

8、ings of paint，varnish，lacquer，printing ink，polymer and similar coatings油漆、清漆、生漆、油墨、聚合物涂层和类似涂层测试1、Sample removal/preparation procedure测试试样取样程序Remove the coating from the laboratory sample by mechanical means at room temperature and comminute it at temperature not exceeding ambient. Obtain a test port

9、ion of not less than 100mg passing through a metal sieve of aperture 0,5mm. 将油漆涂成薄片 油漆烘干后用刀片刮取在室温下用机械刮削等方法从测试试样中提取涂层，在不超过环境温度下将样品粉碎。Where there is only between 10mg and 100mg of comminuted uniform coating available this shall be tested and the quantity of the appropriate elements shall be calculated

10、 as if 100mg of test portion had been used and the mass of test portion shall be reported .如果粉碎后的同一种涂层仅能得到10mg-100mg,应按以下测试程序进行测试，有关元素的含量应按使用的100mg计算，并将测试试样的质量列出。In the case of coatings that by their nature cannot be comminuted （e.g. elastic/plastic paint）remove a test portion from the laboratory sa

11、mple without comminuting the coating.图表 1因其性质不能被粉碎的涂层（如弹性、塑料油漆，图1所示），直接从测试样品上移取测试试样而无须将涂层粉碎。 过500微米的金属筛 测pH值The samples will shear ground through the 500 microns metal screen. 将样品剪碎使其通过500微米的金属筛2、Test procedure测试方法Using the appropriate sized container，mix the test portion so prepared with 50 times i

12、ts mass of an aqueous solution at（372） of c（HCL）=0.07 mol/L.Where the test portion has a mass of between 10mg and 100mg,mix the test portion with 5,0 ml of this solution at （372）.Shake for 1 min. Check the acidity of c（HCL）approximately 2 mol/L until the pH is between 1,0 and 1,5. Protect the mixtur

13、e from light. Agitate the mixture at（372） for 1 h continuously and then allow to stand for 1 h at （372）. 在37 2 下萃取样品 样品萃取2小时后，通过0.45微米的滤膜器过滤使用合适尺寸的容器，将相当于测试试样质量50倍，温度为（372）的c（HCL）=0.07 mol/L盐酸溶液与测试试样混合，如果测试试样质量为10mg-100mg，用上述溶液5.0ml 在（372）下与测试试样混合。摇动1分钟，检查混合物的酸度。如果PH值大于1.5.一边摇动混合物，一边逐滴加入c（HCL）约2mol/

14、L，直到PH值达到1.0-1.5，将混合物避光，在温度为（372）时搅拌混合物1小时，然后在（372）放置1小时。Without delay ，efficiently separate the solids from the solution ，firstly by filtration using a membrane filter，and if necessary ，by centrifuging at up to 5000 g. Separation shall be completed as soon as possible after the completion of the st

15、anding time；centrifuging shall take no longer than 10 min and shall be reported .接着立即将混合物中的固体物有效分离出来， 先使用滤膜过滤器过滤，然后根据需要在加速度达到5000g时离心分离，分离应在上述放置时间结束后尽快完成；如果使用了离心分离，则离心时间不应超过10分钟，且应列明。If the resulting solutions are to be kept for more than the working day prior to analysis they shall be stabilized by

16、 addition of hydrochloric acid so that the concentration of the stored solution is approximately c（HCL）=1 mol/L如果提取好的溶液在进行元素分析前的保存时间须超过一个工作日，应用演算加以稳定，是保存的溶液浓度为c（HCL）约为1mol/L二、 Polymeric and similar materials including laminates, whether reinforced textile or not, but excluding other textiles聚合物和类似材料

17、，包括不论是否有纺织物增强的压层材料，但不包括其他纺织物1、 Sample removal/preparation procedure样品移取/制备程序 Obtain a test portion of not less than 100 mg of the polymeric or similar materials, whilst avoiding heating of the materials, according to the following directions.从聚合材料或类似材料上移取不少于100mg的测试试样，同时避免材料受热，具体操作方法如下。Cut out test

18、portions from the areas having the thinnest material cross section in order to ensure a surface area of the test pieces as large as possible in proportion to their mass. Each test piece shall in the uncompressed condition have no dimension greater than 6 mm.从材料截面厚度最小处剪下测试试样，以保证测试试样的表面积与试样质量的比例尽可能大。每

19、个试样的所有尺寸在不受压的状况下不应小于6mm。If the laboratory sample is not uniform in its material, a test portion shall be obtained from each different material present in a mass greater than 10 mg. In the case where there is between 10 mg and 100 mg of uniform material the mass of the test portion shall be reported

20、and the quantity of the appropriate elements shall be calculated as if 100 mg of the test portion had been used.如果实验品不是同一材料，应从每种不同材料上移取质量不少于10mg的测试试样。如果同一种材料的质量在10100mg之间，测试试样的质量应列明，同时相关元素的含量应按使用的测试试样为100mg计算。2、Test procedure测试方法同 一、4、测试程序三、 Paper and paper board纸和纸板1、Sample removal/preparation proc

21、edure样品移取/制备程序Quality of the largest not more than 400 g/m2 paper and cardboard最大质量不超过400g/m2的纸和纸板Cut the sample small as far as possible in no pressure.将测试试样在不受压的状态下尽量剪小. 2、Test procedure 测试程序Add equivalent to test sample quality 25 times, for 37 temperature 2 water test sample dipping even, go bac

22、k to mixture is equivalent to test sample quality 25 times, for 37 temperature 2 c (HCl) = 0.14 + /-0.010) mol/L hydrochloric acid solution. If the test sample of 10-100 mg, add temperature for 37 2 water 2.5 ml, will test sample dipping even, go back to mixture for 37 temperature 2 c (HCl) = 0.14 +

23、 /-0.010) mol/L 2.5 ml hydrochloric acid solution mix.加相当于测试试样质量25倍、温度为37 2 的水使测试试样浸渍均匀，再往混合物中加入相当于测试试样质量25倍、温度为37 2 的c (HCl )= (0.14 0.010) mol/L盐酸溶液。如果测试试样为10-100mg，加温度为37 2 的水2.5ml ,将测试试样浸渍均匀,再往混合物中加入温度为37 2 的c (HCl )= (0.14 0.010) mol/L 2.5 ml盐酸溶液混合. Note: if this kind of test materials on the s

24、urface coating and similar material, the surface coating no need for a separate blow down and soluble heavy metal test, but connecting paper and cardboard together shear ground testing.备注:如果此类测试材料上有表面涂层等类似的材料,这些表面涂层不需要单独刮下来进行可溶性重金属的测试,而是连着纸和纸板一起剪碎进行测试. 四、 Textiles, whether natural or synthetic天然或合成纺

25、织物1、 Sample removal/preparation procedure样品移取/制备程序Obtain a test portion of not less than 100 mg of the textile material by cutting into test pieces, which in the uncompressed condition have no dimensions greater than 6 mm. 剪布样品 剪好的样品:6x6mm从纺织材料上移取不少于100mg的测试试样，方法是将纺织物材料剪成尺寸在不受压的情况下小于6mm的样品。If the sa

26、mple is not uniform in its material or colour, a test portion shall be obtained from each different material present in a mass greater than 100 mg. A portion forming a mass between 10 mg and 100 mg shall form part of the test portion obtained from the main material.如果试样不是同一种材料或颜色，应从每种不同材料上移取测试试样，使其质

27、量大于100mg，质量在10100mg之间的试样应是从主体材料上获取的测试试样的一部分。Samples taken from patterned textiles shall be representative of the whole material.从印花纺织物移取的样品应能代表整个材料。2、Test procedure测试方法同 一、4、测试程序五、 Glass/ceramic/metallic materials 玻璃/陶瓷/金属材料 1、 Sample removal/preparation procedure样品移取/制备程序Toys and components shall b

28、e first subjected to the relevant tests in accordance with EN 71-1. If the toy or component fits entirely within the small parts cylinder and contains accessible glass, ceramic or metallic materials then the toy shall be tested. 必须先按EN71-1进行有关测试，玩具或玩具部件完全能容入小零件试验器并含有可触及的玻璃陶瓷金属材料，须测试。NOTE Toys and co

29、mponents that have no accessible glass, ceramic or metallic materials are not tested follow.不含可触及的玻璃、陶瓷或金属材料的玩具及部件，不用进行如下测试。2、 Test procedure 测试方法（1）The sample into 50 ml glass containers: high 60 mm, a diameter of 40 mm.Add enough for 37 temperature 2 c (HCL) = 0.07 mol/L hydrochloric acid solution

30、, so that the solution can just completely dipping toys or components. Cover the container, and make the content avoid light and temperature 37 in 2 placed under two hours filtering.样品放入50 ml的玻璃容器：高60mm，直径40 mm。加入足量温度为37 2 的c (HCL ) = 0.07mol/L盐酸溶液，以使溶液能正好完全浸渍玩具或部件。将容器盖上，使内容物避光并在温度37 2 下放置2小时过滤。（2）S

31、mall parts cylinder 细小部件测试仪Will the toy or components in any direction, without pressure to put in as shown in the tester, toys or group to enter fully into the tester, belong to small parts. 将玩具或组件以任意方向，无压力地放入如图所示的测试仪中，玩具或组完全进入测试仪中，则属于细小部件六、 其他材料，不论是否被染色1、Sample removal/preparation procedure样品移取/制备

32、程序同上，制备程序。2、Test procedure 测试方法同上，测试程序。七、 Other material其他材料Materials intended to leave a trace.会留下痕迹的材料Pliable modelling materials, including modelling clays, and gels. 软性造型材料，包括造型粘土和凝胶 Paints, varnishes, lacquers, glazing powders and similar materials in solid or in liquid form.颜料，包括呈固态或液态状的指画颜料、清漆、生漆、釉粉及其他类似材料 Standards标准要求Tab