McMartin Dena W, Peru Kerry M, Headley John V, Winkler Marcus, Gillies Jon A
University of Saskatchewan, Division of Environmental Engineering, Saskatoon, Canada.
J Chromatogr A. 2002 Apr 5;952(1-2):289-93. doi: 10.1016/s0021-9673(02)00106-1.
A liquid chromatography-negative ion electrospray mass spectrometric (LC-ESI-MS) method was evaluated for detection of four prevalent softwood-derived resin acids in natural water. Method detection limits based on a signal-to-noise ratio of 3:1 in river water samples of 0.40, 0.40, 0.30 and 0.25 microg l(-1) for abietic, dehydroabietic, isopimaric and pimaric acids, respectively, are comparable or lower than reported GC methods. Unlike the majority of GC methods, however, the three structural resin acid isomers (abietic, isopimaric and pimaric acids) do not separate sufficiently under the various LC conditions evaluated in this work. Therefore, LC-ESI-MS may not be suitable for instances where measurement of individual isomeric resin acids is required. However, the method is suitable for trace analysis of resin acids in natural waters where isomeric speciation is not required.
评估了一种液相色谱 - 负离子电喷雾质谱（LC - ESI - MS）方法用于检测天然水中四种常见的软木衍生树脂酸。在河水样品中，基于3:1的信噪比，枞酸、脱氢枞酸、异海松酸和海松酸的方法检测限分别为0.40、0.40、0.30和0.25 μg l⁻¹，与已报道的气相色谱（GC）方法相当或更低。然而，与大多数GC方法不同的是，在本工作评估的各种LC条件下，三种结构树脂酸异构体（枞酸、异海松酸和海松酸）分离得不够充分。因此，LC - ESI - MS可能不适用于需要测量单个异构体树脂酸的情况。但是，该方法适用于不需要异构体形态分析的天然水中树脂酸的痕量分析。
