东海近海水质活性磷测定的不确定度探讨
Study on the uncertainty of phosphate measurement in offshore water in the East China Sea
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摘要: 采用国际通用的方法研究了东海近海水质活性磷测定中的不确定度,分析了现场特定环境、测量标准、取样体积、摩尔质量等因素对测量不确定度的影响,评估了各参数的标准不确定度、合成标准不确定度和扩展不确定度.结果表明,现场特定环境是影响东海近海水质活性磷测定中不确定度的主要因素;东海近海水质活性磷测定中的相对合成标准不确定度约为0.067.Abstract: The uncertainty of phosphate measurement in offshore water in the East China Sea was studied with the general method.By analyzing the effective factors of measurement uncertainty,such as the specific measurement environment,the standard materials used,the sampling volume,mole quality,etc.,the standard uncertainty,the combined standard uncertainty and the extended uncertainty of phosphate measurement were estimated.The results show that the specific measurement environment is the main fluencing factor of measurement uncertainty of phosphate,and the relative combined standard uncertainty of phosphate in the offshore water in the East China Sea is about 0.067.
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Key words:
- East China Sea /
- offshore water /
- phosphate measurement /
- uncertainty
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