Speciation Study on Pb in Different Particle Size Fractions by Sequential Extraction and XAFS Spectroscopy
Speciation Study on Pb in Different Particle Size Fractions by Sequential Extraction and XAFS Spectroscopy
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通过顺序萃取和 XAFS 光谱法研究不同粒径级分中的 Pb 形态
DOI：
10.1007/s11270-021-05368-w
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发表时间：
2021-10
期刊：
影响因子：
--
通讯作者：
Lingling Ma
中科院分区：
文献类型：
--
作者：
Yang Shao;Yu-Nan Lu;Min Luo;Ke Yang;Guo-Hua Zhou;Chen Zhao;Hangxin Cheng;Di;ou Xu;Lingling Ma
长沙（Changsha-Zhuzhou-xiangtan）是中国的重工业地区。许多研究仅着眼于那里的重金属的基本污染雕像。但是，很少有人对微骨料中的化学物种或具有不同颗粒大小的样品进行了深入研究。这项研究的重点是对从朱苏岛收集的典型可耕地的PB进行的全面研究。研究了不同土壤颗粒中的土壤特性，粒度分布和PB化学物种。 Pb的种类以顺序提取和X射线吸收细胞（XAF）光谱的特征。关于不同土壤分数之间的基本特性，对质量分布和PB浓度的期望，几乎没有差异。顺序提取结果表明，在不同的土壤部分中，PB物种相似，约90％的Pb物种包括碳酸盐结合，Fe/MN氧化物结合和有机结合级分。水溶性和可交换分数PB的百分比小于1％。进一步应用XAF来确认PB化学物种。结果表明，土壤中Pb的化学物种主要由PBSO4，PB（OH）2和PBO组成。但是，在250-53μm的馏分中显示了8.2％的PB3O4，这与其他粒度分数不同。 XAFS分析表明，主要的化学物质是PBSO4，它与顺序提取方法中的Fe/Mn氧化物结合分数相对应。 Pb（OH）2是可以解释为碳酸盐和有机结合部分的次要物种。这些结合的结果表明，所研究的土壤中的PB处于所有粒径内的均匀，稳定且较少的生物利用度状态。
Changsha-Zhuzhou-Xiangtan is a heavy industry area in China. Many studies just focused on the basic contamination statues of heavy metals there; however, few of them had a deep study on chemical species in micro aggregate or samples with different particle sizes. This study focused on a comprehensive research of Pb in typical arable soil collected from Zhuzhou. Soil properties, particle size distributions, and Pb chemical species in different soil particles were investigated. Species of Pb were characterized by sequential extraction and X-ray absorption fine structure (XAFS) spectra. Little variance was shown on basic properties between different soil fractions, expect for mass distribution and Pb concentration. Sequential extraction results suggested that Pb species were similar in different soil fractions and about 90% of Pb species were consisted of carbonate binding, Fe/Mn oxide binding, and organic binding fraction. The percentage of water-soluble and exchangeable fraction Pb was less than 1%. XAFS was further applied to confirm the Pb chemical species. Results showed that the chemical species of Pb in soil were mainly consisted of PbSO4, Pb(OH)2, and PbO. However, 8.2% of Pb3O4 was presented in 250–53 μm fraction, which was different from other particle size fractions. The XAFS analysis suggested that the dominant chemical species was PbSO4 which was corresponding to the species of Fe/Mn oxide binding fraction in sequential extraction method. Pb(OH)2 was the secondary species that can be explained as carbonate and organic binding fraction. These combined results indicated that Pb in the studied soil was in a uniform, stable, and less bioavailability state within all particle sizes.
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影响因子：
3
作者：
Qian Zhang;Fangfang Zhang;Chengmin Huang
通讯作者：
Qian Zhang;Fangfang Zhang;Chengmin Huang
DOI：
10.1007/s002160051330
发表时间：
1999-05
期刊：
Fresenius' Journal of Analytical Chemistry
影响因子：
--
作者：
E. Welter;W. Calmano;S. Mangold;L. Tröger
通讯作者：
E. Welter;W. Calmano;S. Mangold;L. Tröger
影响因子：
11.8
作者：
Yanguo Teng;Jin Wu;Sijin Lu;Yeyao Wang;X. Jiao;Liuting Song
通讯作者：
Yanguo Teng;Jin Wu;Sijin Lu;Yeyao Wang;X. Jiao;Liuting Song
影响因子：
3.8
作者：
Atsuyuki Ohta
通讯作者：
Atsuyuki Ohta
影响因子：
6.9
作者：
Karim, Zahida;Qureshi, Bilal Aslam;Qureshi, Salman
通讯作者：
Qureshi, Salman