Barnes I L, Murphy T J, Michiels E A
J Assoc Off Anal Chem. 1982 Jul;65(4):953-6.
In response to needs for analytical standards by researchers studying the exposure of humans to lead, a wide variety of environmental and "food" Standard Reference Materials have been prepared and certified for lead as well as for many other elements. Among the food types are SRM 1571, Orchard Leaves, 45 ppm; SRM 1575, Pine Needles, 10.8 ppm; SRM 1573, Tomato Leaves, 6.3 ppm; SRM 1566, Oyster Tissue, 0.48 ppm; SRM 1577, Bovine Liver, 0.34 ppm; SRM 1568, Rice Flour, 0.045 ppm; and SRM 1567, Wheat Flour, 0.020 ppm. These materials, intended for use in calibrating instruments and methods, have been certified by a definitive method, isotope dilution mass spectrometry. The advantages and disadvantages of this technique are discussed and some suggestions for the use of its isotopic selectivity in the study of lead in the human environment are presented.
为了满足研究人类铅暴露情况的研究人员对分析标准的需求，已经制备了多种环境和“食品”标准参考物质，并对其铅含量以及许多其他元素进行了认证。食品类型包括：标准参考物质1571（果园树叶，45 ppm）；标准参考物质1575（松针，10.8 ppm）；标准参考物质1573（番茄叶，6.3 ppm）；标准参考物质1566（牡蛎组织，0.48 ppm）；标准参考物质1577（牛肝，0.34 ppm）；标准参考物质1568（米粉，0.045 ppm）；以及标准参考物质1567（小麦粉，0.020 ppm）。这些物质旨在用于校准仪器和方法，已通过同位素稀释质谱法这种权威方法进行了认证。讨论了该技术的优缺点，并针对其同位素选择性在人类环境铅研究中的应用提出了一些建议。
