经过条件试验,建立了热解齐化-原子吸收光谱法直接测定红土镍矿中汞含量的方法。样品中汞含量在57~1 752μg/kg,重复测定的相对标准偏差(RSD)在1.6%~5.3%(n=11),回收率在92.79%~94.77%,与冷原子吸收光谱法的方法间相对偏差为5.18%~11.93%。方法准确、快速、样品用量少、无试剂污染,适合于批量样品的测试,有应用和推广价值。 After the condition test, the method of direct pyrolysis and atomic absorption spectrometry determination of mercury in laterite nickel ore was established. The relative standard deviations (RSDs) of repeated measurements were between 1.6% and 5.3% (n = 11) and the recoveries ranged from 92.79% to 94.77%, which were in agreement with the results of cold atomic absorption spectrometry The relative deviation between 5.18% ~ 11.93%. The method is accurate, rapid, less sample usage, no reagent contamination, suitable for batch sample testing, and has application and promotion value.