摘要
本文介绍了以原子吸收法测定海洋沉积物碳酸盐组分中Ca,Mg,Na,Fe,Mn的方法。经室温干燥的样品以10~3mol/m^3HCl消化后,加入KCl至K^+含量达0.5％作为释放剂,进行测定。方法省时,结果可靠,回收率为88—105％,相对标准偏差<3％。
A method is described for the rapid determination of elements Ca, Mg, Na, Fe, Mn in the carbonate fraction of marine sediments by atomic absorption spectrophotometry. The sample is dried, ground and weighted, then 103mol/m3 hydrochloric acid is added at room temperature for digestion. After the solution is filtered, potassium chloride is added to the filtrate to 0.5% of K+ as a releasing agent. All elements are analysed with flame atomic absorption spectrophotometer model WFD-Y2 (made in Beijing, China).The recovery rate and the relative standard deviation were tested to be within 87.6-105.1% and <3% respectively.The method is time-saving, accurate an reliable.
出处
《海洋科学》
CAS
CSCD
北大核心
1990年第5期43-48,共6页
Marine Sciences
关键词
海洋
沉积物
碳酸盐
金属量
测定
Sediments, Atomic absorption spectrophotometry, Carbonate fraction
