轻稀土元素

南北两带岩体均富集轻稀土元素、大离子亲石元素和高场强元素，而Cr、Ni等相容元素含量很低。

Both belts are enriched in LREE , large_ion lithophile elements and high charge density elements . However , the content of compatible elements such as Cr and Ni are very low .

轻稀土元素主要赋存于褐帘石和独居石中，重稀土元素主要赋存于褐钇铌矿等矿物中。

LREE are mainly in orthite and monazite , HREE are mainly in fergusonite etc.

ICP-AES快速分析轻稀土元素

Fast Determination of Light Rare Earth Elements by ICP-AES

矿石的稀土元素分配模式为轻稀土元素富集型，多数有Eu正异常和Ce负异常。

The REE patterns of the ore in this deposit are characterized by light REE enrichment types , most with positive Eu anomalies and negative Ce anomalies .

稀土元素配分模式上，球粒陨石标准化配分曲线明显右倾，轻稀土元素相对富集，反映出沉积物中等程度的Eu负异常。

In REE distribution patterns , the chondrite-normalized REE partition curve incline to the right , indicate that they are enriched in LREE and middle degree Eu negative abnormity .

ICP-AES分析轻稀土元素干扰校正研究从轻稀土元素中分离并测定镧及铈的探讨

INTERFERENCE CORRECTION ON DETERMINING LIGHT RARE EARTH ELEMENTS BY ICP-AES Study on The Separation and Determination of Lanthanum and Cerium Respectively from Light Lanthanides

这与赋矿围岩的岩石具有轻稀土元素富集、重稀土元素亏损，以及Eu、Ce略显亏损的特点相反。

It is contrary to the characteristics of host rock , namely light rare earth elements enrichment , heavy rare earth elements loss and slightly losses of Eu and Ce .

不同程度地富集大离子亲石元素和轻稀土元素，相对亏损重稀土元素，稀土元素分馏明显或比较明显，相容元素（Co、V、Cr、Ni）显著亏损。

They enrich in LILEs and LREEs at different degrees , and deplete relatively to HREEs , REEs fractionate evidently , compatible elements ( Co , V , Cr , Ni ) deplete significantly .

花岗岩体稀土元素总量∑REE变化于99.5×10-6～294.72×10-6之间，轻稀土元素富集，重稀土元素亏损，具弱至中等的负Eu异常。

The granite intrusion has ∑ REE values ranging from 99.5 to 294.72 × 10-6 and are enriched in LREE and depleted in HREE with weak to moderate negative anomalies .

岩石富集大离子亲石元素、生热元素和轻稀土元素，贫Sr、Ba，具弱的Eu负异常。

The syenite is enriched in large ion lithophile elements , radioactive heat-generating elements , high field strength elements and LREE and depleted in Sr and Ba and has weak negative Eu anomalies .

REE分布模式与上地壳相似，轻稀土元素富集，Eu负异常，微量元素比值显示源岩以长英质岩石为主。

The REE distribution pattern is similar to that of the upper continental crust , characterized by enrichment of LREE and negative Eu anomalies . Some trace element ratios show that the source rocks are mainly felsic .

冲绳海槽中的伊是名（Izena）海洼Jade热液活动区烟囱物稀土元素特征表现为轻稀土元素相对富集，并具有铕的较强的正异常。

The rare earth element components of hydrothermal chimney in Jade area in the Izena depression are characterized by enriched light rare earth element and high positive europium abnormity .

裂变产物中轻稀土元素的分离和测定

Separation and measurement of light rare earth elements in fission products

轻稀土元素抑癌作用机理研究

Studies on tumor suppression mechanism of light rare earth elements

本文报道了用薄层色谱法分离轻稀土元素的色谱条件。

The condition of chromatographic separation of light rare earths is reported .

高速离子交换色谱法则定轻稀土元素中的铽

Determination of Terbium in Light Rare Earths by High-Speed Ion Exchange Chromatography

偶氮胂-DBS与轻稀土元素的显色反应研究

The Study on the Colour Reaction of the Light Rare Earths with Arsenazo-DBS

黄河包头段颗粒物中轻稀土元素的分布特征

Distribution Characteristics of LREE in Particulates of the Baotou Section of the Yellow River

掺入轻稀土元素对薄膜的磁光克尔效应的增强

Enhancement of Magneto-Optical Kerr Effect of HRE-TM Magneto-Optical Films with the Addition of LRE Elements

用薄层层析法分离、测定独居石中各轻稀土元素的研究

Separation and Quantitative Determination of various Cerium Sub-group Elements in Monazite Sand by Thin-layer Chromatography and Densitometric Method

在球粒陨石标准化配分模式图上，表现为轻稀土元素富集，重稀土严重亏损，且略显右倾型。

Chondrite standard curve of rare earth elements reveals LREE enrichment , HREE heavy losses , and slightly right-wing type .

碳酸岩的轻稀土元素高度富集，轻、重稀土元素之间发生了极度分馏，但无铕异常显示。

Light REE in carbonatites are extremely enriched and strongly fractionated relative to heavy REE , but without Eu anomaly .

稀土元素总量平均为219×10-6，轻稀土元素含量是重稀土元素含量的4.34倍。

Total Ree is about 219 × 10-6 , in which light Ree weight as 4.34 times as heavy ones .

磷灰石中稀土元素含量对于球粒状陨石的标绘表明，绝大多数磷灰石样品对于轻稀土元素有富集现象。

The chondrite-normalized distribution of the rare earth element ( REE ) shows light REE enrichment for the majority of samples .

加入强化元素能进一步提高合金的热强性.用轻稀土元素代替Y则能降低生产成本。

Addition of strengthening elements can further improve heat-resisting strength ; while light rare-earth elements can reduce the production cost instead Of Y.

轻稀土元素钕和重稀土元素镝用于制造风力涡轮机和电动车辆中的永磁体。

Neodymium , a light rare earth , and dysprosium , a heavy , are used in permanent magnets for wind turbines or electric vehicles .

后者异常富集轻稀土元素、配分曲线向右倾陡，其成因可能与造山期中基性浅成岩浆作用有关。

The latter has unconventionally rich LREE with steep right_dipping REE distribution curves , suggesting that its generation might have been linked to shallow intermediate_basic orogenic magmatism .

随着接近循环热液成矿体系的成矿中心和硅化不断增强，REE，LREE和HREE含量降低，轻和重稀土元素之间分异程度增强；

While circulatory hydrothermal ore-forming center approaches with continual enhancement of silification , REE , LREE and HREE decrease , and fractionation between LREE and HREE becomes high .

轻、重稀土元素比值（slree／shree）在上述两个时间段中分别为8.16和9.42，其变化趋势与∑ree的完全相同。

The ratios of SL REE / SH REE are 8.16 and 9.42 respectively in the two periods , and with the similar variation with Σ REE .

结果表明，宁强陨石的基质比全岩富集轻稀土和亲硫元素，并大致具有与Allende陨石基质相似的稀土特征。

The results indicate that there are more abundant light REE and chalcophile elements in the matrix of Ningqiang than in the whole rock sample of Ningqiang , and it roughly exhibits a similarity of REE model between the Ningqiang and Allende matrices .