塩化カリウム標準液のロット依存性‐標準海水の初期オフセットの成因について‐

抄録

The comparison of batches of IAPSO standard seawater (SSW) is basic to high quality hydrographic studies. There are a lot of works for batch-to-batch differences of SSW and so-called "offset table" has been summarized up to P 140. To apply the "offset table" retrospectively means to accept tacitly the hypothesis that the batch-to-batch difference of SSW was not caused only by the aging effect but also, to a considerable extent, the reflection of the "initial offset". In order to figure out the cause of the "initial offset", we conducted the comparison of the conductivity of the defined KCl solutions made from the different high quality chemicals and found the lot and/or company dependency. This is a potential cause of "initial offset" between SSW batches.