What's the difference between modern instrumental analysis and chemical analysis methods?

If modern instrumental analysis only uses instruments to realize traditional chemical methods, their principles are the same, and the measured objects are no different; The function of the instrument replaces some manual actions and human five-view recognition, which speeds up the analysis progress and reduces some human errors. However, if the new principle technology is used to realize the detection, the detected objects may be different. For example, the determination of some heavy metals by traditional chemical methods may need to be judged and analyzed by chemical titration of various substances, which requires a large number of sample pretreatment. However, modern spectral instruments can realize nondestructive testing without qualitative or quantitative analysis through intermediate reactions, and samples do not need pretreatment.