附件:
luohi123
第9楼2019/04/30
③ 修订了六价铬的测试方法,铬(III)和铬(VI)的测试方法由LC-ICP-MS变更为IC-ICP-MS,修订后的方法已经能包含所有类别材料的限量。这话是有问题的啊,看F.3.4里面列到的设备有LC和IC。
F.3.4 Chromatographic system suitable for trace metal analysis (e.g. Bio inert Liquid chromatograph,
Ion Chromatograph)
F.3.5 Inductively coupled plasma mass spectrometer (ICP-MS) equipped with chromatographic
system (see F.3.4). The instrument shall be able to determine 52Cr with high sensitivity. This normally
requires an ICP-MS with a collision/reaction system or a high resolution mass spectrometer.
F.3.6 Equipment for measuring pH in small volumes, calibrated and sufficiently accurate for the
purposes of this European Standard.
BGYQ
第10楼2019/04/30
标准附录H中提到,满足标准中条款11的方法性能的其他分析技术,也是可以的!
Other standards preparation and analytical techniques may also be used, as long as they meet the requirements specified in Clause 11
and are in line with the expectations of Annex C。
但是CR6+,单独用ICP-OES解决不了啊。