环境监测校准曲线斜率的质量控制探讨  

A Study on Quality Control for Calibration Curve Slope in Environmental Monitoring

作　　者：朱惠敏 王燕平 石碧清[2] 

机构地区：[1]自贡市环境监测中心站,四川自贡643000 [2]中国环境管理干部学院,河北秦皇岛066102

出　　处：《中国环境管理干部学院学报》2015年第2期61-63,共3页Journal of Environmental Management College of China

摘　　要：在环境监测中使用分光光度法进行样品测定时,都要利用校准曲线的回归方程计算其待测样品的含量。为使监测结果更为准确,必须对校准曲线的准确性进行检验,即对校准曲线的斜率进行统计检验。在实际工作中,常采用Dixon检验法和斜率相对偏差(RbD)法检验校准曲线斜率,也可以利用校准曲线斜率均值控制图进行质量控制,使分析测试工作处于受控状态中,使监测结果更加真实可靠。When the sample was measured by spectrophotometer in environmental monitoring, the regression equation of calibration curve was used to calculate content of the sample. To obtain more accurate results, the accuracy of the calibration curve must be tested, i.e. statistical tests for the slope of the calibration curve. Dixon test and the test for relative standard deviation of slope were often used in the practice. In addition to these two tests, control chart for slope mean value was also used to control quality, which made analytical testing in a controlled state and monitoring results more reliable.

关 键 词：校准曲线 斜率 统计检验 斜率均值控制图 

分 类 号：X830.2[环境科学与工程—环境工程]