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】人发样品是生物类有机样品．用火焰原子吸收光谱法测定人发中Ｃａ，Ｍｇ，Ｃｕ，Ｐｂ，Ｆｅ，Ｚｎ元素时，采用硝酸：高氯酸＝４：１消解体系，电热板加热常压消解大约２小时，样品呈湿盐态．以去离子水稀释定容，测定溶液为无色、透明，分别上机测定以上各元素．本测定方法技术关键在于消解温度不得超过２５０℃，消解完全后要赶尽高氯酸．测定Ｃａ、Ｍｇ时，用０．１％ＳｒＣｌ２水溶液定容，以消除共存物的干扰．对各元素的仪器测定条件要仔细优选，确定最佳工作状态，做吸光度—浓度曲线，确定人发样品中各微量元素的含量．定期测定飞行员头发中微量元素含量的变化，可以对飞行员生理与心理状态的早期变化做出予警，及时防治，以保障飞行员的健康．
Human hair samples are biological organic samples. When the content of Ca, Mg, Cu, Pb, Fe and Zn in human hair was determined by flame atomic absorption spectrometry, nitric acid: perchloric acid = 4: 1 digestion system was used. Salt state. Diluted with deionized water to determine the volume of the solution was colorless, transparent, were measured on the above elements. The key technology of the determination method is that the digestion temperature should not exceed 250 ° C and the perchloric acid must be drained after the digestion is completed. Determination of Ca, Mg, with 0.1% SrCl2 aqueous constant volume to eliminate the interference of coexistence. For each element of the instrument to carefully determine the conditions to determine the best working condition, make absorbance - concentration curve to determine the human hair samples in the trace elements. Periodic determination of pilots hair content of trace elements in the changes of the pilot can be physiological and psychological changes in early warning, timely prevention and control, in order to protect the pilot’s health.