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介绍了海洋沉积物消化及多元素分析的测定方法。分析测定过程中 ,应选用国家标准溶液。标准溶液的蒸发次数、加酸量、稀释倍数等对样品测定结果的准确性均有一定影响。消化过程中 ,过多的蒸发次数对微量元素 Cr、V的测定结果有明显影响 ,蒸发的次数越多 ,元素的损失量越大 ,因此 ,为了获得更准确的测定结果 ,应尽可能减少蒸发次数 ,并减少加酸量 ;测定常量元素时 ,样品较大的稀释倍数使获得数据的可靠性增大 ,通常 0 .2 5 g样品应稀释至 5 0m L,0 .5 g样品应稀释至 1 0 0 m L。
The method of determination of marine sediment digestion and multi-element analysis is introduced. Analysis and determination process, the national standard solution should be used. The standard solution of the evaporation times, plus the amount of acid, the dilution of the sample determination results have an impact on the accuracy. In the process of digestion, excessive evaporation times have a significant effect on the determination of trace elements Cr and V. The greater the number of evaporation, the greater the loss of elements. Therefore, in order to obtain more accurate determination results, the evaporation should be reduced as much as possible And reduce the amount of added acid; Determination of the elements of the constant, the larger the sample dilution factor to increase the reliability of the data obtained, usually 0. 25g sample should be diluted to 50ml, 0.5g sample should be diluted to 1 0 0 m L.