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美国斯克里普斯海洋研究所很重视国际标准海水的比测工作,他们希望通过比测能得到一种盐度测量的校正方法,使得各次海洋考察中所得结果之差能相互协调。他们的做法是:把标准海水与 KCl 标准溶液相比较,得出标准海水电导率的批间差,在此基础上对测量结果进行修正。早期的标准海水比例实验表明,各批号标准海水的氯度——电导率关系不一致。盐度计是以电导率为标准的,而以前的标准海水却标以氯度。人们曾设想相对于标准 KCI 溶液给标准海水标出电导率之后,也许就能够消除标准海水的批间差了。下面提供的最新标准海水比测实验表明,标以电导率之后,尽管标准海水的批间差减小了,但各批之间仍然存在着显著差别。新的比测结果是根据1978实用盐标的定义,相对于标准 KCI 溶液进行校正的。在这之前由于没有绝对的参考标准,因此不可能计算标准海水的系统误差,从而无法对考察所得的盐度值进行绝对修正。现在有了能复现的 KCl 标准,就可计算标准海水的误差了。
The Scripps Institution of Oceanology attaches great importance to the international standard seawater ratio testing. They hope to obtain a salinity measurement calibration method through comparison testing, so that the differences in the results obtained from various marine inspection can be coordinated with each other. Their approach is: Standard seawater and KCl standard solution compared to the standard seawater conductivity difference between batches, on the basis of the measurement results were amended. Early standard seawater ratio experiments show that the standard seawater of different batches of chlorine - conductivity relationship is inconsistent. Salinity meters are based on conductivity, whereas previous standard seawater was marked with chlorine. It has been assumed that the standard seawater may be able to eliminate poor batch-to-batch yields after comparing the standard KCI solution to standard seawater for conductivity. The latest standard seawater ratio test given below shows that after the conductivity is marked, there is a significant difference between batches although the difference between the standard seawater decreases. The new test results are based on the 1978 standard definition of a standard salt, compared to the standard KCI solution. Since there was no absolute reference standard before, it was impossible to calculate the systematic error of standard seawater, so that the absolute salvage value of the survey could not be corrected. Now with the recoverable KCl standard, you can calculate the standard seawater error.