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本文采用溴化钾压片法，用红外光谱对部分常见的麻一合成纤维的混纺制品进行了测定。用基线法测出各自分析谱带的吸光度，并计算出ＫＢ值。用ＫＢ值对其百分含量作图，得该混纺制品的检量线。其混纺率测试的结果准确、可靠，误差均小于±５％．本方法样品用量少、且简单、快速，再现性好．不仅适用于产品的质量检验，也适用于麻－合成纤维混纺品的微量物证鉴别，实为一种行之有效的方法。
In this paper, potassium bromide tabletting method, using infrared spectroscopy on some of the common hemp synthetic fiber blended products were measured. The absorbance of each analytical band was measured using the baseline method and the KB value was calculated. With the KB value of its percentage of mapping, the blended product calibration curve. The results of its blended rate test accurate and reliable, the error is less than ± 5%. The method sample with less, and simple, fast, good reproducibility. Not only applies to the quality inspection of products, also apply to Ma - synthetic fiber trace identification of trace evidence, in fact, an effective method.