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磺胺甲噁唑和甲氧苄啶的紫外光谱严重重叠，本文构造和使用两个M估计的新的目标函数导函数(x)函数，并由此建立两个新稳健回归方法，以此解析重叠的吸收光谱，不经分离紫外分光光度法同时测定磺胺甲噁唑和甲氧苄啶，结果满意。为多组分同时测定提供了两个新稳健回归方法。
The UV spectra of sulfamethoxazole and trimethoprim severely overlap. We construct and use two new objective function derivative functions (x) to estimate M, and establish two new robust regression methods to resolve the overlap Of the absorption spectrum, without separation UV spectrophotometry simultaneous determination of sulfamethoxazole and trimethoprim, with satisfactory results. Two new robust regression methods are provided for the simultaneous determination of multiple components.