新版本IEC62321(11195CDV)中A 4.1中写道“100 μL of the surrogate stock solution (50 μg/mL) is placed in a 5 mL volumetric flask”，这样计算surrogate stock solution浓度应该是1μg/mL吧？可标题上写着“A.4.1 PBB (1 μg/mL for each congener), PBDE (1 μg/mL for each congener) and surrogate standard (10 μg/mL) stock solution”。然后下面A.4.2 Calibration中写道“The following calibration solutions are produced from the stock solution of the PBB (1 μg/mL for each congener), PBDE (1 μg/mL for each congener) and surrogate standard (0,2 μg/mL) (see A.4.1)”，怎么surrogate stock solution浓度又变成0.2μg/mL了呢？？？
应该是标准版本转移的过程中出现的数据问题了, 在111/54/CDV的版本中,有关该溶液的配制方式是:20 μL of the surrogate stock solution (50 μg/mL) is placed in a 5 mL volumetric flask,如此计算即是surrogate standard (0,2 μg/mL) (see A.4.1)
注意A.4.1上写的是PBB (1 μg/mL for each congener), PBDE (1 μg/mL for each congener，如果是for each congener的话应该计算为PBB (0.1 μg/mL for each congener), PBDE (0.1 μg/mL for each congener) and surrogate standard (1 μg/mL) stock solution吧？？
这里应该仍然是1μg/mL的,for each congener并不能简单的理解为将1μg/mL平均拆成10份,从前后文可以看出来这里配制的应该是每个同系物(从1到10)浓度均为1μg/mL!
jollyjudy发表:注意A.4.1上写的是PBB (1 μg/mL for each congener), PBDE (1 μg/mL for each congener，如果是for each congener的话应该计算为PBB (0.1 μg/mL for each congener), PBDE (0.1 μg/mL for each congener) and surrogate standard (1 μg/mL) stock solution吧？？
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