Goldberger B A, Caplan Y H, Zettl J R
J Anal Toxicol. 1986 Sep-Oct;10(5):194-7. doi: 10.1093/jat/10.5.194.
Breath specimens (N = 143) from human subjects initially analyzed for ethanol content by infrared spectroscopy were collected onto silica gel. The specimens were retained 1.25 to 2.75 years following adsorption and subsequently analyzed by headspace gas chromatography. The results revealed good overall correlation between the direct and delayed ethanol determinations (r = 0.900). Specimens were collected by police officers following a defined protocol and the results are presented to illustrate practical use and limitations of such a technique.
对最初通过红外光谱法分析乙醇含量的人体受试者的呼气样本（N = 143）收集到硅胶上。样本在吸附后保存1.25至2.75年，随后通过顶空气相色谱法进行分析。结果显示直接测定和延迟乙醇测定之间总体相关性良好（r = 0.900）。警官按照既定方案收集样本，给出结果以说明该技术的实际应用和局限性。
