Smith D J, Laslett R
Forensic Science Centre, Adelaide, Australia.
J Forensic Sci Soc. 1990 Nov-Dec;30(6):349-56. doi: 10.1016/s0015-7368(90)73374-9.
Until 1986, commercially-available infrared breath alcohol analysing instruments employed wavelengths in the region of 3.4 mu. The move to the 9.5 mu region in the Dräger Alcotest 7110 promised greater discrimination against endogenous compounds such as acetone. The present study confirmed that acetone interference is insignificant and that in terms of in vitro accuracy and precision, the ten 7110 units tested were superior to the Breathalyzer 900, the instruments they will replace for evidential testing in South Australia. The new unit meets the South Australian Police demand for portability and its shielding prevents interference fron any of the common radio frequency transmissions in Adelaide when operating as near to the source as possible. Comparisons of breath results (monthly averages) and their corresponding blood results accumulated during the first few months of operation showed no bias between the two techniques.
直到1986年，市面上可买到的红外线呼气酒精分析仪采用的波长在3.4微米区域。德拉格Alcotest 7110采用9.5微米区域的波长，有望更好地区分内源性化合物，如丙酮。本研究证实，丙酮干扰微不足道，就体外准确性和精密度而言，所测试的十台7110设备优于呼吸酒精含量测定仪900，而在南澳大利亚，它们将取代呼吸酒精含量测定仪900用于证据检测。新设备满足了南澳大利亚警方对便携性的要求，其屏蔽功能可防止在尽可能靠近信号源操作时受到阿德莱德任何常见射频传输的干扰。在运行的头几个月里积累的呼气结果（月平均值）及其相应的血液结果比较显示，两种技术之间没有偏差。
