稀土矿区生态环境稀土含量检测

Analysis on content of rare earth in environment of rare earth mine area

目的研究稀土矿区环境中,啮齿动物微核率的变化。方法用电感耦合等离子体质谱法测定了稀土矿区与对照区的水、土壤、空气、蔬菜的含量;检查了该环境中啮齿动物微核率。结果稀土矿区村民室内空气总悬浮颗粒中稀土浓度为905.1 ng/m3,可吸入颗粒中稀土浓度为612.5 ng/m3;蔬菜(干重)6 370.35μg/g;井水9.18μg/L;土壤869.73μg/g。稀土矿区啮齿动物微核率为2.12‰,而对照区为1.06‰,差异无统计学意义(P>0.05)。结论在稀土矿区的自然生态环境下,未发现啮齿动物微核率显著增加。

Objective To study change of micronuclei in rodent of rare of earth mining. Methods ICP- MS was used to measured rare earth concentration in air, well water, soil, vegetable in rare earth mining and nonmining. Results The rare earth concentration in total suspended pariculates（TSP） in the room was 905, 1 ng/m3, in inhalable particles （IP） outroom the rare earth concentration was 612.5 ng/m^3 ; in vegetable was 6 370,35 μg/g（dry weight） ;in well water was 9.18 ng/L; in soil was 869.73 μg/g. The micronuclei rate was 2,12‰ in rare earth mining, 1.06‰ in contrast area, They hadn＇ t statistical significant difference（P 〉0.05）. Conclusion In rare earth mine area, the micronuclei rate don＇t significantly increase.