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前言在分光光度计日常分析工作中,经常遇到的问题是同一个样品在不同仪器上得到的吸收测量值不相同,有时,它们之间的差别往往超过允许公差范围,增加了生产部门和检验部门的矛盾。为此,要得到精确的测量结果,就必须充分了解仪器的主要参数对吸收测量的影响。影响测量结果的主要参数有波长精度、光谱带宽、杂散光、光度线性和吸收池常数。另外,由于吸收池的内反射、干涉及透射面的楔形等都会影响仪器的正确使用。
Preface In the routine analysis of spectrophotometers, the frequently encountered problem is that the same sample has different absorption measurements on different instruments. Sometimes the differences between them often exceed the permissible tolerances, adding production departments and testing Department of contradictions. For this reason, to obtain accurate measurement results, you must fully understand the main parameters of the instrument on the absorption measurement. The main parameters that affect the measurement result are wavelength accuracy, spectral bandwidth, stray light, photometric linearity, and cell constant. In addition, due to the absorption cell internal reflection, interference and wedge-shaped transmission will affect the correct use of the instrument.