环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2014年
5期
50-52
,共3页
王琳%孙海容%王岚云%孙培琴%戴天有
王琳%孫海容%王嵐雲%孫培琴%戴天有
왕림%손해용%왕람운%손배금%대천유
不确定度评定%Top-Down%线性拟合法%总磷%水质
不確定度評定%Top-Down%線性擬閤法%總燐%水質
불학정도평정%Top-Down%선성의합법%총린%수질
Uncertainty evaluation%Top-Down%Linear fitting method%Total phosphorus%Water quality
采用Top-Down不确定度评定理念，利用实验室日常质控数据，结合标准样品的线性校准方法（线性拟合法），评定水中总磷的测量不确定度，并将评定结果与GUM评定法相比较，相对偏差≤20％。指出线性拟合法适用于测量系统校准函数成线性，且实验总残差符合常数剩余标准差假定情况下的不确定度评定。
採用Top-Down不確定度評定理唸，利用實驗室日常質控數據，結閤標準樣品的線性校準方法（線性擬閤法），評定水中總燐的測量不確定度，併將評定結果與GUM評定法相比較，相對偏差≤20％。指齣線性擬閤法適用于測量繫統校準函數成線性，且實驗總殘差符閤常數剩餘標準差假定情況下的不確定度評定。
채용Top-Down불학정도평정이념，이용실험실일상질공수거，결합표준양품적선성교준방법（선성의합법），평정수중총린적측량불학정도，병장평정결과여GUM평정법상비교，상대편차≤20％。지출선성의합법괄용우측량계통교준함수성선성，차실험총잔차부합상수잉여표준차가정정황하적불학정도평정。
This paper adopt the new concept of uncertainty evaluation"Top-Down", by means of laboratory daily quality control data combined with linear calibration method of reference materials ( linear fitting method) , to evaluate the uncertainty in measurement of total phosphorus in water.Comparing the evaluation results with GUM evaluation method, it showed that the comparison results'relative standard deviation is less than 20%.It points out that the linear fitting method is suitable for the uncertainty evaluation of such assumptive cases that the calibration function of measurement system is linear, and the total residual error is accord with the residual stand-ard deviation of constant.
