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红外光谱仪是做什么的?原理、用途与选型要点
红外光谱仪通过测量分子对红外光的吸收,得到一张“指纹谱”,用来判断样品里有什么化学基团、是不是目标物质。它最适合做定性鉴别和结构确认,配合标准曲线也能做定量。如果你要测的是有机物、高分子、药品包装、橡胶、沥青、食品成分,红外光谱仪通常是首选入门手段;如果...