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采用化学分离富集－等离子发射光谱法测定了金沙江水系江水和沉积物中１５个稀土元素（Ｌａ、Ｃｅ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｇｄ、Ｔｂ、Ｄｙ、Ｅｒ、Ｔｍ、Ｙｂ、Ｌｕ、Ｓｃ和Ｙ）的含量，提供了金沙江水系江水和沉积物稀土元素环境背景值．结果表明，金沙江水系稀土元素分布模式呈负斜率，铕呈负异常．水系沉积物∑Ｃｅ／∑Ｙ比值在２．５２－４．１８之间，Ｅｕ／∑ＲＥＥ比值在０．５６－０．９４之间，说明金沙江水系沉积物属贫铕富铈族稀土．金沙江水系江水和沉积物稀土元素背景值明显受汇水区岩性所控制．
The contents of 15 rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb and Lu) in the water and sediments of the Jinshajiang River system were determined by chemical separation and enrichment-plasma emission spectrometry , Sc and Y), provide the environmental background value of the rare earth elements and sediments in the Jinsha River system. The results show that the distribution pattern of rare earth elements in the Jinsha River has a negative slope and that of europium shows a negative anomaly. The ΣCe / ΣY ratios of river sediments ranged from 2.52 to 4.18 and the Eu / ΣREE ratios ranged from 0.56 to 0.94, indicating that the Jinsha River sediments belong to the rare earth-rich europium-rich cerium group. The background value of the REE of the Jinsha River system and its sediments is obviously controlled by the lithology of the catchment area.