分光光度法及其他一些分析方法,都需要制作校准曲线以求得被测物的含量。以往惯用的作图法,靠手工绘制校准曲线。由于测量误差,实验数据点往往偏离直线,这时手工画直线的任意性较大,难以准确。为此,根据一元线性回归分析的理论,提出了回归法。水质监测分析中,也采用回归法绘制校准曲线。 Spectrophotometry and other analytical methods, you need to make a calibration curve in order to obtain the content of the measured object. In the past, the usual mapping method, by hand to draw the calibration curve. Due to the measurement error, experimental data points tend to deviate from the straight line. At this time, the arbitrariness of the hand-drawn straight line is large and it is difficult to be accurate. Therefore, according to the theory of univariate linear regression analysis, a regression method is proposed. Water quality monitoring analysis, regression method is also used to draw the calibration curve.