Meijer Harro A J
Centre for Isotope Research, University of Groningen, Groningen, The Netherlands.
Isotopes Environ Health Stud. 2009 Jun;45(2):150-63. doi: 10.1080/10256010902869113.
Procedures in our laboratory have always been directed towards complete understanding of all processes involved and corrections needed etc., instead of relying fully on laboratory reference materials. This rather principal strategy (or attitude) is probably not optimal in the economic sense, and is not necessarily more accurate either. Still, it has proven to be very rewarding in its capability to detect caveats that go undiscovered in the standard way of measurement, but that do influence the accuracy or reliability of the measurement procedure. An additional benefit of our laboratory procedures is that it makes us capable of assisting the International Atomic Energy Agency (IAEA) with primary questions like mutual scale assignments and comparison of isotope ratios of the same isotope in different matrices (like delta(18)O in water, carbonates and atmospheric CO(2)), establishment of the (17)O-(18)O relation, and the replenishment of the calibration standards. Finally, for manual preparation systems with a low sample throughput (and thus only few reference materials analysed) it may well be the only way to produce reliable results.
我们实验室的程序一直致力于全面理解所有相关过程以及所需的校正等，而不是完全依赖实验室参考材料。这种相当原则性的策略（或态度）从经济角度来看可能并非最优，也不一定更准确。然而，事实证明，它在检测标准测量方法中未发现但确实会影响测量程序准确性或可靠性的警示方面非常有成效。我们实验室程序的另一个好处是，它使我们能够协助国际原子能机构（IAEA）解决一些主要问题，如相互的量值分配、不同基质中同一同位素的同位素比率比较（如水、碳酸盐和大气二氧化碳中的δ(18)O）、(17)O-(18)O关系的建立以及校准标准的补充。最后，对于样品通量较低的手动制备系统（因此分析的参考材料很少），这很可能是获得可靠结果的唯一途径。
