Source Differentiation by Lead Isotope Ratios in Total Digests of Soil Fractions and Residual Fractions
- 化学化工－已发表论文 
由于各地区地质结构不同,造成了铅同位素组成具有地域特征。本研究利用电感耦合等离子体质谱测定了福建不同茶园土壤的铅同位素比值,比较了土壤全消解和残渣态两种赋存形态的铅同位素比值的差异,发现残渣态的铅的地域性特征较强,可用来作为地区土壤的判别依据。The isotope ratios of lead vary with geographic location. In this study, the precision obtained for the 206Pd/208Pb ratio, 206Pd/207Pb ratio was considerably better than 0.5% isotope ratio studies. It is found that the isotope values of the siol samples from different sources have their own special pattern. Lead isotope ratios of tea soil from different regions in Fujian Province were determined by inductively coupled plasma mass spectrometry, the differences of lead isotope ratios (206Pb/207Pb-206Pb/208Pb) of the total digests of soil fractions and the residual fractions were compared. The results show lead isotope ratios of residual fraction are more efficiently than that of total digests of soil fractions in identifying sources of soil.