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Updated: Jun 25, 2025

Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies
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Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

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在郭河流域的地表-地下水-沉积物多功能系统中微量元素的分布,来源识别,水质和风险评估

Wen Si1, Jinzhao Xu1, Guijian Liu1

  • 1CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, 230026, China.

Journal of environmental management
|May 30, 2024
PubMed
概括

在古河流域的微量元素污染构成风险. (As), (Mn) 和化物 (F-) 存在生态和健康危害,需要注意水质管理.

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Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
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