| 摘要: |
| 为了快速而有效地对中国边缘海区沉积物中的酸可溶硫化物(AVS)进行研究,冷扩散法被引入。用冷扩散法提取不同体积硫化物溶液中的AVS,所得到的AVS含量与所加溶液体积的相关性较好,说明此方法具有较好的提取效果。在中国边缘海不同典型海域的浅表层沉积物中,利用冷扩散法对AVS进行了分析:胶州湾李村河口AVS的浓度在0.4～120.1μmol/g之间;南黄海西北部陆架在0～11.1μmol/g之间;南海北部陆坡一柱状样沉积物中多数样品<1μmol/g。结果显示不同典型海域沉积物中AVS的分布差别较大,符合不同环境沉积物中AVS含量的一般规律。因此冷扩散法作为一种有效的AVS提取方法,值得在研究中使用与推广。 |
| 关键词: 沉积物 冷扩散法 酸可溶硫化物(AVS) 中国边缘海 |
| DOI： |
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| 基金项目:中国科学院知识创新工程重要方向项目(KZCX3-SW-219) |
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| A cold diffusion method to analyse acid volatile sulfide and its application to analysis of sediments in the Chinese marginal seas |
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| Abstract: |
| In order to study rapidly and efficiently the acid volatile sulfide(AVS) in the sediments of the Chinese marginal seas, a cold diffusion method was imported. AVS in a set of sulfide resolutions with different volumes was analyzed by diffusion method and the data of AVS have a good relationship with the volumes of solution. It illustrates the good AVS extraction efficiency of cold diffusion method. This method was used in the analysis of shallow and surface sediments in the different Chinese marginal seas. The AVS value range is 0.4～120.1μmol/g, 0～11.1 μmol/g, and <1μmol/g in the areas of Jiaozhou Bay, the Yellow Sea, the South China Sea, respectively. These results show that the distribution of AVS in sediments is quite different in different sea areas. It gets a good application to the research of AVS in the areas of the Chinese marginal seas and it accords with the general rule of AVS distribution in different sediment deposit environments. So, the cold diffusion method, as an effective AVS separating method, is deserved being used and generalized in the future research. |
| Key words: sediments cold diffusion method acid volatile sulfide(AVS) Chinese marginal seas |
