【摘要】 对同期降水、江河水和地下水的元素组成,使用中子活化分析方法作了对比试验。降水取自分布于8个气候带的11个站,其海拔高程为5～3659m,年平均降水量为50～1571mm。河水取自各主要江河包括内陆河和海岛的12个测站以及3个实验流域,并在其附近采集地下水。降水中共检出35种元素,各站有19～31种元素,同期均有空间分布。河水中共检出39种元素,各河分别有21～31种元素。地下水中共检出35种元素,各站有30～32种元素。对其浓度组成作了由大于1000μg/L至小于0 01μg/L的分级综合。有些元素含量超出所报道的世界淡水浓度范围,小于其最低值,甚或远大于其最高值。更多还原

【Abstract】 The element composition of natural waters including rainfall, river water and groundwater are tested by neutron activation analyses The rainfall is sampled from 11 stations distributed in all main climate zones of this country with altitude from 5 m ASL to 3?659 m ASL, annual mean precipitation from 50 mm to 1?571 mm The river water are sampled from 12 hydrometric stations of the main rivers of China, including inland rivers, island river and brooks of 3 representative catchments The natural waters are sampled simultaneously 35 elements in rainfall, 39 elements in river water and groundwater are found Concentration of elements are grouped with level greater than 1?000 μg/L to that less than 001 μg/L Many elements are found to be beyond the range of world fresh water concentration reported by Bowen i.e., several elements much higher or lower than Bowen values更多还原