Schulten H R, Monkhouse P B, Achenbach C, Ziskoven R
Experientia. 1983 Jul 15;39(7):736-8. doi: 10.1007/BF01990300.
Field desorption mass spectrometry (FD-MS) combined with stable isotope dilution has been used to determine rubidium concentrations from human serum. Samples obtained from 110 healthy volunteers (50 males, 60 females) were examined. The rubidium concentrations found varied from 0.96 to 3.56 mumoles/l, the average value being 1.96 mumoles/l. The precision of the measurements within a batch was 0.8%. The time for 1 analysis, including sample preparation is about 30 min, the total sample consumption is 100-200 mul. The corresponding potassium concentrations were also determined from all these serum samples; a weak trend towards higher potassium levels with increasing rubidium concentration is found.
场解吸质谱法（FD-MS）结合稳定同位素稀释已被用于测定人血清中的铷浓度。对从110名健康志愿者（50名男性，60名女性）采集的样本进行了检测。所测得的铷浓度在0.96至3.56微摩尔/升之间，平均值为1.96微摩尔/升。一批测量的精密度为0.8%。包括样品制备在内的一次分析时间约为30分钟，总样品消耗量为100 - 200微升。还从所有这些血清样本中测定了相应的钾浓度；发现随着铷浓度的增加，钾水平有微弱的升高趋势。
