| 薄膜扩散梯度技术在重金属生物有效态监测中的应用 |
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| 引用本文： | 张婷,刘爽,管鹏,宋玉梅,潘佳钏,郭鹏然.薄膜扩散梯度技术在重金属生物有效态监测中的应用[J].中国环境监测,2019,35(2):117-128. |
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| 作者姓名： | 张婷 刘爽 管鹏 宋玉梅 潘佳钏 郭鹏然 |
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| 作者单位： | 兰州理工大学石油化工学院;广东省测试分析研究所广东省水环境污染在线监测工程技术研究中心;广东省测试分析研究所广东省化学危害应急检测技术重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目“典型海水养殖底泥中汞形态的源解析研究”（21777150），“典型海水养殖底泥中重金属形态和生物毒性评价方法研究”（21307120），“钴负载活性氧化铝/凹凸棒石复合脱硫剂脱除二氧化硫的机理及脱硫模型研究”（51302123）；广东省科技计划项目“水中多金属同时在线检测系统研发及应用”（2016B020240006），“地表水重金属在线检测新技术及应用示范”（2017A040405040），“地表水中抗生素原位富集检测及生态风险评价”（2016A040403061） |
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| 摘 要： | 重金属生物有效性是评估重金属元素迁移性、生物可利用性和生态影响的关键参数。薄膜扩散梯度技术(DGT)是一种原位被动采样技术,因其具有原位富集性、形态选择性,可提供被监测物质在监测时间段内的平均浓度等优点,可作为生物对重金属摄取的模拟替代物对环境介质中重金属的生物可利用度进行预测,已被广泛应用于环境介质中重金属生物有效性的测定。研究主要介绍了DGT技术的原理、组成和特点,评述了其近年来在水体、土壤、沉积物中重金属生物有效态应用方面的新进展,提出了DGT技术未来要提高抗生物污染能力及寻找可与DGT技术联用的相关技术的观点。
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| 关 键 词： | 环境介质 薄膜扩散梯度技术 重金属 生物有效性 |
| 收稿时间： | 2018/5/14 0:00:00 |
| 修稿时间： | 2018/7/9 0:00:00 |
The Application of Diffusive Gradients in Thin Films Technique in Bioavailability Monitoring of Heavy Metals |
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| ZHANG Ting,LIU Shuang,GUAN Peng,SONG Yumei,PAN Jiachuan and GUO Pengran.The Application of Diffusive Gradients in Thin Films Technique in Bioavailability Monitoring of Heavy Metals[J].Environmental Monitoring in China,2019,35(2):117-128. |
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| Authors: | ZHANG Ting LIU Shuang GUAN Peng SONG Yumei PAN Jiachuan and GUO Pengran |
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| Institution: | College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China,College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China;Guangdong Institute of Analysis Guangdong Engineering and Technology Research Center for Online Monitoring of Environment Water Pollution, Guangzhou 510070, China,College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China;Guangdong Institute of Analysis Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangzhou 510070, China,Guangdong Institute of Analysis Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangzhou 510070, China,Guangdong Institute of Analysis Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangzhou 510070, China and Guangdong Institute of Analysis Guangdong Engineering and Technology Research Center for Online Monitoring of Environment Water Pollution, Guangzhou 510070, China |
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| Abstract: | Bioavailability of heavy metals is a key parameter to measure the mobility,biological availability and ecological impact of heavy metal elements. Diffusive gradients in thin films (DGT) is an in situ passive sampling technique,which has been widely used in the assessment of bioavailability and mobility of heavy metals in environmental media. It has the advantages of morphology selectivity,being suitable for in situ enrichment of trace systems and providing the average concentration of the monitored substances during the monitoring period. It also can be used as a simulated substitute for heavy metals absorbed by organisms to predict the bioavailability of heavy metals in environmental media.This paper introduces the working principle,device composition and characteristics of the DGT technology,and reviews the new progress of bioavailability of heavy metals in water,soil and sediment. It is proposed that DGT technology should improve anti-biofouling capabilities and look for related technologies that can be used in conjunction with DGT technology in the future. |
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| Keywords: | environmental medium diffusive gradients in thin films heavy metals bioavailability |
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