本文研究了使用四种方法洗涤混匀的三例发样,对锰,铁、铜、锌、镉元素浓度的影响。所评价的洗涤溶液是非离子洗涤剂(Triton X—100),离子洗涤剂(十二烷基硫酸钠)、丙酮、以及一种洛合剂(EDTA)。结果看出,对于每一种测定的元素均有一个再洗涤也不会降低的含量。对多种元素说来,要求达到这一含量的冼涤次数是极不相同的,在头发的微量元素分析中应该考虑到这种影响。 In this paper, we studied the effect of three sample preparation methods on the concentration of manganese, iron, copper, zinc and cadmium by four methods. The wash solutions evaluated were Triton X-100, ionic detergent (sodium lauryl sulfate), acetone, and a loess agent (EDTA). As a result, it was found that there was an amount of content that was not washed again nor deteriorated for each element measured. For many elements, the number of cleanings required to reach this level is extremely different, and this effect should be taken into account in the trace elemental analysis of the hair.