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目的探讨微波消解——原子荧光法测定尿汞的可行性。方法尿样经微波消解后,样品中的汞被加入的硼氢化钾还原成原子态汞,由氩气载入到原子化器,在空心阴极灯发出的特定光线照射下,被激发跃迁到较高的能级上,并在回到较低的能级时辐射出荧光,荧光的强度与汞原子的浓度成正比,与标准系列比较后定量。结果分别进行了线性、回收率、精密度、检出限试验。其回收范围:87．2％～105．3％;线性平均相关系数:r=0．999 6;相对标准偏差<5％;最低检出限:DL=0．013μg／L。结论方法操作简便,重现性好,灵敏度高,可满足职业病尿汞测定需要。
Objective To investigate the feasibility of microwave digestion - atomic fluorescence spectrometry for the determination of urinary mercury. Methods After the samples were digested by microwave, mercury in the samples was reduced to atomic Hg by adding potassium borohydride, which was loaded into the atomizer by argon gas and excited to a higher level under the irradiation of specific light from the hollow cathode lamp High energy level and emits fluorescence when it returns to a lower energy level. The intensity of the fluorescence is proportional to the concentration of mercury atoms and is compared with the standard series after quantification. Results were linear, recovery, precision, detection limit test. The recovery range: 87.2% ~ 105.3%; linear average correlation coefficient: r = 0.999 6; relative standard deviation <5%; minimum detection limit: DL = 0.013μg / L. Conclusion The method is simple, reproducible and sensitive, which can meet the needs of urinary mercury determination in occupational diseases.