Eight rare earth elements(REE) in 104 topsoil samples collected from the Loess Plateau has been determined by using of INAA. The regional distribution of REE contents and its effectiveness of REE applying on crops in ...Eight rare earth elements(REE) in 104 topsoil samples collected from the Loess Plateau has been determined by using of INAA. The regional distribution of REE contents and its effectiveness of REE applying on crops in this area are discussed. The preliminary results showed that the mean concentration of most REE in this area approaches to those of China as a whole; and REE content in main type of soil of the Loess Plateau is as follows: gray cinnamon forest soil, Lou soil(stratified old manured loessal soil)> Heilu soil(dark loessal soil) . loessal soil>sierozem, and similar with the distribution pattern of soil clay contents in the soil which decrease gradually from southeast to northwest. This area may be suitable to apply REE in agriculture production.展开更多
Contents of 15 rare earth elements (REEs) in the seeds of 60 breeds of wheat have been analyzed by the inductively-coupled plasma mass spectrometry (ICP-MS). The distribution pattern of contents of REEs in wheat seeds...Contents of 15 rare earth elements (REEs) in the seeds of 60 breeds of wheat have been analyzed by the inductively-coupled plasma mass spectrometry (ICP-MS). The distribution pattern of contents of REEs in wheat seeds has been observed and compared with that in soils. Comparison with literature data has also been made. The results show that the background of REEs in wheat seeds is 10 11-108 g -g-1, 3-4 levels lower than in soils. The distribution pattern is light REEs higher in contents and slight Eu-anomaly, similar to that in soils. The data obtained in this study can accurately represent the background content of REEs in wheat seeds.展开更多
文摘Eight rare earth elements(REE) in 104 topsoil samples collected from the Loess Plateau has been determined by using of INAA. The regional distribution of REE contents and its effectiveness of REE applying on crops in this area are discussed. The preliminary results showed that the mean concentration of most REE in this area approaches to those of China as a whole; and REE content in main type of soil of the Loess Plateau is as follows: gray cinnamon forest soil, Lou soil(stratified old manured loessal soil)> Heilu soil(dark loessal soil) . loessal soil>sierozem, and similar with the distribution pattern of soil clay contents in the soil which decrease gradually from southeast to northwest. This area may be suitable to apply REE in agriculture production.
文摘Contents of 15 rare earth elements (REEs) in the seeds of 60 breeds of wheat have been analyzed by the inductively-coupled plasma mass spectrometry (ICP-MS). The distribution pattern of contents of REEs in wheat seeds has been observed and compared with that in soils. Comparison with literature data has also been made. The results show that the background of REEs in wheat seeds is 10 11-108 g -g-1, 3-4 levels lower than in soils. The distribution pattern is light REEs higher in contents and slight Eu-anomaly, similar to that in soils. The data obtained in this study can accurately represent the background content of REEs in wheat seeds.
