mg/kg指的是mg重金属/kg食品，指迁移到1kg食品里的重金属，规定所有食品模拟液的密度为1mg/cm3，即mg/l就是mg/kg。

是的[/quote]
不是三天，而是十天

不是三天，而是十天[/quote]

板油，你的依据是什么呢，请附上你的依据吧

不是三天，而是十天[/quote]

依据？？？？？

没有来过该版面，简直是井底之蛙了，学习了不少新知识，也许以后步入岗位还用得上的

你要做铅镉溶出,建议去看一下84/500 EEC。

注意这是楼主描述：｛最近在做EU/10/2011 重金属溶出量测试，样品是食品用复合包装袋，提供的温度是20-40度，时间是大于24h。
小弟是刚刚开展这类实验，不懂，我想咨询各位大师，重金属溶出量测试的前处理是不是跟做全面迁移的前处理一样呢，就是在最差的情况下，用3%乙酸40度浸泡10天，10天后取浸泡液测试重金属含量呢？｝
至于依据提供的温度是20-40度，时间是大于24h。查阅10/2011你就明白了。注意是全面迁移。我的感慨：现在我感觉这个社会很浮躁，看事情只看在表面，或断章取义，或一知半解，最后还臆断。

CHAPTER 3
Testing for overall migration
Overall migration testing shall be performed under the standardised testing conditions set out in this chapter.
3.1.

Standardised testing conditions
The overall migration test for materials and articles intended for the food contact conditions described in column 3 of Table 3 shall be performed for the time specified and at the temperature specified in column 2. For test OM5 the test can be performed either for 2 hours at 100 °C (food simulant D2) or at reflux (food simulant A, B, C, D1) or for 1 hour at 121 °C. The food simulant shall be chosen in accordance with Annex III.
L 12/86 EN Official Journal of theEuropean Union 15.1.2011
If it is found that carrying out the tests under the contact conditions specified in Table 3 causes physical or other changes in the test specimen which do not occur under worst foreseeable conditions of use of the material or article under examination, the migration tests shall be carried out under the worst foreseeable conditions of use in which these physical or other changes do not take place.

OM2 10 d at 40 °C Any long term storage at room temperature or below, including heating up to 70 °C for up to 2 hours, or heating up to 100 °C for up to 15 minutes.

如果以上的描述还不明白，我建议您还是老老实实把整个文件系统地看完。再予以指正，谢谢！