Chemical structures of products were confirmed by element analysis, ir, MS, et al.
所得产物经元素分析，红外光谱，质谱等分析确证结构。
The synthetic conditions were optimized. HPLC and IR analysis et al were used to characterize the product.
探讨和优化了合成条件，并采用液相色谱、红外光谱分析等手段确认了产物的结构。
Phase and microstructure changes of silica ultrafine particles in sintering were studied with FT-IR, XRD, DTA/TG and TEM et al.
并用FT-IR、XRD、DTA/TG和TEM等手段研究了二氧化硅超微细粉在煅烧过程中的物相和显微结构的变化。
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