目的 運用近紅外光譜法區(qū)分道地與非道地生地黃藥材。方法 大量收集道地產(chǎn)地及其他產(chǎn)地的生地黃藥材，對藥材進(jìn)行處理后，運用Foss XDS Smart ProbeTM近紅外原料分析儀；PbS-硅；數(shù)據(jù)分析波長：780～2 200 nm；每個樣品掃描4次。結(jié)果 得到600余張近紅外光譜，采用殘差分析方法進(jìn)行分析，閾值用ID（≤0.84）和Qual（≤0.79）兩個量進(jìn)行限定，能夠較好區(qū)分樣品中道地與非道地產(chǎn)區(qū)來源的樣品。結(jié)論 利用近紅外光譜技術(shù)能夠?qū)崿F(xiàn)對地黃藥材道地性的鑒別。

Objective To identify the Rehmanniae Radix from genuineness or non genuineness habitats by using near-infrared spectroscopy (NIR). Methods The samples were collected widely from the genuine regions and other habitats of Rehmanniae Radix. All the samples were analyzed by Foss XDS Smart ProbeTM; Pbs-Si; and data analysis wavelengths were 780—2 200 nm. Each sample was rescanned for four times. Results Six hundred NIRS spectra were obtained, and the NIR data were analyzed by residual analysis. The threshold values were limited by ID≤0.84 and Qual ≤0.79. Conclusion NIR is an accurate, fast, and simple method for the distinguishing of Rehmanniae Radix from genuine regions or not.