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１引言由于多组份体系吸收曲线的复杂性，通过数学公式拟合曲线来计算各组份的含量误差较大，本文提出多组份混合体系分光光度同时测定的一种新的曲线拟合方法─—最佳逼近分光光度法，可以显著地提高多组份体系同时测定的准确度。２实验部２．１仪器与试剂ＧＢＣ－ＵＶ／Ｖ－
1 Introduction Due to the complexity of absorption curve of multi-component system, the error of the content of each component can be calculated by mathematical fitting curves. In this paper, a new curve fitting method of simultaneous determination of multi-component mixture system spectrophotometry ─ ─ best approximation spectrophotometry, can significantly improve the accuracy of simultaneous determination of multi-component system. 2 Experimental 2.1 Instruments and reagents GBC-UV / V-