【摘要】 水体重金属污染一直以来备受人们的关注。本文以龙江河宜州段水体为研究对象，通过电感耦合等离子质谱仪对2020-2021年龙江河宜州段枯水期和丰水期水体中Pb、Cd、Cu、Zn重金属的检测，分析四种重金属在枯水期和丰水期水体中的浓度变化。结果表明：2020～2021年龙江河宜州段枯水期-丰水期中，镉、铜、锌在丰水期中的浓度都低于枯水期，铅2020年枯水期中含量低于丰水期，2021年丰水期中浓度低于枯水期。2020年龙江河宜州段丰水期水体中p H为弱酸性-中性-弱碱性这样一个变化的过程，水体中铅、镉、铜、锌四种重金属的存在形式随着pH值的变化而发生转化；2021年枯水期与丰水期之间水温波动较大，随着温度的升高，水体中重金属铅、铜、锌的存在形式开始逐渐转化，镉的存在形式相对稳定。更多还原

【Abstract】 Water heavy metal pollution has been under the attention of people. This paper takes the dragon river have succeeded section of water body as the research object, by inductively coupled plasma mass spectrometer for dragon rivers have succeeded in 2020-2021 season and the plentiful of Pb, Cd, Cu and zinc in water of heavy metal detection, analysis of four kinds of heavy metals in water and in the plentiful water content change. The results show that: the contents of cadmium, copper and zinc in the dry season are lower than those in the dry season, and the contents of lead in the dry season are lower than those in the dry season,and the contents of lead in the dry season are lower than those in the dry season, and the contents of lead in the dry season are lower than those in the dry season, and the contents of lead in the dry season are lower than those in the dry season. The pH of water in yizhou section of Longjiang River in wet season in 2020 is a process of weak acidic, neutral and weak alkaline, and the existence forms of lead, cadmium, copper and zinc in water are transformed with the change of pH. In 2021, the water temperature fluctuates greatly between the dry season and the wet season. With the increase of temperature, the existence forms of heavy metals lead, copper and zinc in water begin to change gradually, and the existence forms of cadmium are relatively stable.更多还原