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好氧不产氧光合细菌反馈作用下的五里峡水库坝前水体化学特征研究
引用本文:宋昂,彭文杰,何若雪,靳振江,卢晓漩,房君佳,黄炳慧,李强.好氧不产氧光合细菌反馈作用下的五里峡水库坝前水体化学特征研究[J].岩矿测试,2017,36(2):171-179.
作者姓名:宋昂  彭文杰  何若雪  靳振江  卢晓漩  房君佳  黄炳慧  李强
作者单位:中国地质科学院地质研究所, 国土资源部同位素地质重点实验室, 北京 100037,中国地质科学院地质研究所, 国土资源部同位素地质重点实验室, 北京 100037,中国科学院广州地球化学研究所同位素地球化学国家重点实验室, 广东 广州 510640,国土资源部武汉地质矿产研究所同位素地球化学实验室, 湖北 武汉 430205,国土资源部天津地质矿产研究所实验测试室, 天津 300170,南京大学地球科学系同位素地球化学实验室, 江苏 南京 210093,中国科学院地质与地球物理研究所岩石圈演化国家重点实验室, 北京 100029,中国科学院地质与地球物理研究所岩石圈演化国家重点实验室, 北京 100029,中国科学院地质与地球物理研究所岩石圈演化国家重点实验室, 北京 100029,国家海洋局第一海洋研究所海洋环境测试中心, 山东 青岛 260061,中国地质科学院矿产资源研究所, 国土资源部同位素地质重点实验室, 北京 100037,核工业北京地质研究院, 核工业地质分析测试研究中心, 北京 100029
基金项目:国土资源公益性行业科研专项经费项目(201511064)
摘    要:微生物是水体生物地球化学循环的主要驱动者,也是能量代谢的主要参与者,在水体生态系统多样性与稳定性方面发挥着举足轻重的作用。好氧不产氧光合细菌(AAPB)是水体中一类分布广泛的重要功能类群,它们可利用光能补充自身能量代谢,并影响水体化学组分,其重要性被人们广泛认可并深入研究。为探讨岩溶区AAPB反馈作用下的五里峡水库坝前水体化学特征,本文对坝前不同层位水体进行实地监测,在获得不同层位水体溶解有机碳和颗粒有机碳稳定碳同位素特征的基础上,采用荧光定量PCR技术检测、研究了坝前水体不同层位AAPB分布规律。结果表明:取样期五里峡水库坝前水体为HCO_3~--Ca~(2+)-Mg~(2+)贫-中营养型;通过水体溶解氧、δ~(13)CPOC、δ~(13)CDOC和碳氮比综合分析得出,坝前水体有机碳主要由微型生物产生;AAPB占总浮游细菌的相对丰度范围在1.33%~1.60%,且AAPB在不同层位的丰度变化强度要高于总浮游细菌的丰度变化强度,表明相较于总浮游细菌,AAPB对水化学特征的反馈作用更加敏感;使用典范对应分析可揭示水体理化性质与AAPB的内在联系,结果显示AAPB和总浮游细菌均受浊度的影响较大,故基于颗粒沉降的海洋微生物泵作用也适用于陆地岩溶水库。因而,AAPB反馈作用下的水化学特征对揭示CO_2-水-碳酸盐岩-微生物代谢体系具有重要的启示意义。

关 键 词:标准溶液  钕同位素比值143Nd/144Nd  特性值  多接收热电离质谱法  多接收电感耦合等离子体质谱法
收稿时间:2017/1/20 0:00:00
修稿时间:2017/3/22 0:00:00

Hydrochemistry Characteristics in front of the Wulixia Reservoir Dam Associated with Feedback from Aerobic Anoxygenic Phototrophic Bacteria
SONG Ang,PENG Wen-jie,HE Ruo-xue,JIN Zhen-jiang,LU Xiao-xuan,FANG Jun-ji,HUANG Bing-hui and LI Qiang.Hydrochemistry Characteristics in front of the Wulixia Reservoir Dam Associated with Feedback from Aerobic Anoxygenic Phototrophic Bacteria[J].Rock and Mineral Analysis,2017,36(2):171-179.
Authors:SONG Ang  PENG Wen-jie  HE Ruo-xue  JIN Zhen-jiang  LU Xiao-xuan  FANG Jun-ji  HUANG Bing-hui and LI Qiang
Institution:Laboratory of Isotope Geology, Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China,Laboratory of Isotope Geology, Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China,Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China,Laboratory of Isotope Geochemistry, Wuhan Institute of Geology and Mineral Resource, Ministry of Land and Resources, Wuhan 430205, China,Laboratory of Geoanalysis and Geochronology, Tianjin Institute of Geology and Mineral Resource, Ministry of Land and Resources, Tianjin 300170, China,Laboratory of Isotope Geochemistry, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China,State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,The First Institute of Oceanography, State Oceanic Administration of China, National Marine Environmental Monitoring Center, Qingdao 260061, China,Laboratory of Isotope, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China and Research Center of Geoanalysis, Ministry of Nuclear Industry, Beijing Research Institute of Uranium of Geology, Beijing 100029, China
Abstract:143Nd/144Nd isotope ratio is the key for Sm-Nd isotope method. The 143Nd/144Nd isotope ratio of geological samples varies within a small range, and thus the 143Nd/144Nd isotope ratio analysis must be precise. In order to obtain high precision and high accuracy of the analytical data, the analysis process involving Nd isotope reference material plays an important role. The previous Nd isotope reference material is neodymium oxide, which have been exhausted in recent three decades. A national reference material of 143Nd/144Nd isotope ratio was introduced in this paper, which shows sufficient homogeneity and stability. The certified value of this reference material was determined by eleven participating laboratories using MC-TIMS and MC-ICP-MS. The 143Nd/144Nd isotope ratio value for the reference material is 0.512438, with a combined expanded uncertainty (k=2) of 5 10-6. The standard solution gets certification in May, 2015 and the Serial number is GSB 04-3258-2015. The standard solution can be used for quality monitoring of the equipment calibration and analysis process during the 143Nd/144Nd ratio determination for geology, resources, ocean, environment, archaeological and other type samples.
Keywords:reference materials  143Nd/144Nd isotope ratio  certified value  Multicollector Thermo Ionization Mass Spectrometry  Multicollector Inductively Coupled Plasma-Mass Spectrometry
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