中国盐度标准海水稳定性研究

Research on the Stability of China Salinity Standard Seawater

为确保中国盐度标准海水产品质量,保证量值传递的准确性,定期监控其稳定性是十分必要的。文中研究了中国盐度标准海水稳定性所需考察的因素。对于短期稳定性主要考察高温、低温、低压、冲击、碰撞和振动等6个因素对其特性量值的影响,对于长期稳定性考察其特性量值在3 a内是否随时间发生显著变化。结果表明,中国盐度标准海水的特性量值在非正常存贮环境条件下不发生显著变化,并在其标称的3年有效期内是稳定的。

It is very necessary to regularly monitor the stability of China Standard Seawater to ensure its quality and the accuracy of value transmission. This paper analyzes the factors concerning the stability of China Standard Seawater. Six factors should be considered in the test of short-term stability, including high temperature, low temperature, low pressure, impact, crash and vibration. As for the test of long-term stability, the testers should measure whether the characteristic values of the seawater change significantly in the 3 years. The results show that the characteristic values of China Standard Seawater don’t change greatly under abnormal storage circumstances and are stable in the 3 years’ validity period.