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磷酸盐氧同位素技术在环境科学中的研究进展

田丽艳1,2,郭庆军1*,何会军3,郎赟超4,胡健4,杨俊兴1,魏荣菲1,2,韩晓昆1,2
  

  1. 1中国科学院地理科学与资源研究所环境修复与资源工程研究室, 北京 100101; 2中国科学院大学, 北京 100049; 3中国海洋大学海洋化学理论与工程技术教育部重点实验室, 山东青岛 266100; 4中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550081)〖HT5SS〗
  • 出版日期:2016-07-10 发布日期:2016-07-10

Progress on phosphate oxygen isotope technology in environmental science.

TIAN Li-yan1,2, GUO Qing-jun1*, HE Hui-jun3, LANG Yun-chao4, HU Jian4, YANG Jun-xing1, WEI Rong-fei1,2, HAN Xiao-kun1,2#br#   

  1. (1Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2University of Chinese Academy of Sciences, Beijing 100049, China; 3Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, Shandong, China; 4State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China).
  • Online:2016-07-10 Published:2016-07-10

摘要: 近年来,由于磷素流失造成的环境问题日益严重,查明环境中磷的来源及迁移转化对于改变目前现状具有重要意义。而磷酸盐氧同位素作为一种地球化学示踪剂在水体环境、土壤以及古环境研究中得到了广泛应用。本文总结了不同自然界物质中磷酸盐氧同位素组成(δ18OP),分馏机理,分离、纯化和测试方法以及在环境科学中的应用研究进展。在此基础上,提出未来研究工作展望:根据不同样品的基本性质选择不同的分离、纯化方法,磷酸盐氧同位素分馏机制及原因仍存在不确定性,需进一步研究,磷酸盐氧同位素应用前景有待进一步扩展。

关键词: 云南省, 烤烟, 参考作物蒸散量, 需水量, 灌溉需求指数, 气候变化

Abstract: Recently, environmental pollution caused by phosphorus (P) loss has become an increasingly serious problem. Therefore, it is significant to identify the sources, migration and transformation of P in the environment. The oxygen isotope composition of phosphate (δ18OP) represents a powerful tracer, which has been widely used for investigations of aquatic ecosystems, soils and paleoenvironments. This article discusses the δ18OP composition of natural substances and related fractionation mechanisms as well as the separation and purification of phosphate from environmental samples and introduces the application of δ18OP analyses in environmental science. According to the progress and problems of previous research, some modifications and improvements should be put forward for future studies: The methods of separating and purifying of δ18OP should be selected according to the sample properties; fractionation mechanisms and applied prospects of δ18OP in environment need to be further studied.

Key words: Yunnan Province, flue-cured tobacco, reference crop evapotranspiration, water requirement, irrigation requirement index, climatic change.