摘要
采用不同浓度的HCl、HAc、NH4Ac及NH4Ac HAc缓冲溶液对典型黄土剖面的黄土样品进行了系统的浸取实验 ,结果表明 ,稀HAc是分离方解石与白云石的最佳溶剂。在浸取实验中对 1 4种不同元素含量进行测试 ,多数元素的含量有变化。用稀HAc溶液浸取所得的浸取液中87Sr/86Sr的测定结果与使用稀HCl浸取的浸取液中87Sr/86Sr测定值有一定的差别。
In this paper,different concentration of HCl, HAc, NH 4Ac and NH 4Ac HAc buffer solution have been used to dissolve the loess samples from the representative profile in Loess Plateau and 14 elements in samples were determined. The results show that the contents for most elements in leaching solutions are quite different when different sample dissolving reagents were used and the sample dissolving method with dilute HAc solution is proved to be the best one for separating the calcite and dolomite in the loess. The significant difference of 87 Sr/ 86 Sr isotope ratios in loess samples is also found when sample dissolving reagents of dilute HAc solution and the dilute HCl solution were used. The method can meet the requirements in paleoclimate and paleoenvironment research.
出处
《岩矿测试》
CAS
CSCD
北大核心
2000年第4期264-267,共4页
Rock and Mineral Analysis
基金
国家自然科学基金!(498730 0 4)
国家杰出青年基金!(4972 5 30 7)
