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中国地质大学科学技术发展院朱健（博士生），袁松虎BGEG国家重点实验室 Water Research , MAR 15 2017. Production of Hydroxyl radicals from oxygenation of simulated AMD due to CaCO3-induced pH increase
碳酸钙；诱导；模拟酸性；矿山废水；pH升高；氧化；活化
2021/10/21
2017年3月15日，《Water Research》上刊发了中国地质大学生物地质与环境地质国家重点实验室朱健博士的论文——碳酸钙诱导模拟酸性矿山废水pH升高引起Fe(II)氧化活化氧气产生羟自由基(Production of hydroxyl radicals from oxygenation of simulated AMD due to CaCO3-induced pH increase)。
Methods to evaluate CaCO3 cycle modules in coupled global biogeochemical ocean models
evaluate CaCO3 cycle modules coupled global biogeochemical ocean
2014/12/19
The marine CaCO3 cycle is an important component of the oceanic carbon system and directly affects the
cycling of natural and the uptake of anthropogenic carbon.
In numerical models of the marine ca...
Novel method of generation of Ca(HCO3)2 and CaCO3 aerosols and first determination of hygroscopic and cloud condensation nuclei activation properties
Ca(HCO3)2 and CaCO3 aerosols hygroscopic and cloud condensation nuclei activation properties
2010/9/21
Atmospheric mineral aerosols contain CaCO3 as a reactive component. A novel method to produce CaCO3 aerosol was developed by spraying Ca(HCO3)2 solution, which was generated from a CaCO3 suspension an...
一种假单胞菌诱导CaCO3结晶
假单胞菌 碳酸钙 矿化 形貌
2010/8/30
选用实验室自培育斯氏假单胞菌，通过测定pH值、电导率变化研究了细菌液、菌体液对碳酸钙结晶过程的影响，并通过SEM、XRD、红外等测试技术对生成的碳酸钙进行表征。 研究表明，斯氏假单胞菌细菌液与菌体液对碳酸钙结晶过程具有抑制作用，浓度增加，抑制作用越显著。 SEM、XRD和红外光谱的分析结果显示，细菌液可诱导亚稳态球霰石生成，菌体液能诱导出中孔方解石型碳酸钙。
以L-组氨酸和十二烷基苯磺酸钠（SDBS）作为CaCO3生长调节剂，用粉末X射线衍射、红外光谱测试技术对生成的CaCO3晶体进行了表征，扫描电子显微镜对生成的CaCO3晶体形貌进行了分析，研究了表面活性剂浓度、温度和溶剂的组成对CaCO3晶型和形状的影响。 结果表明，在实验条件下表面活性剂的浓度对CaCO3晶型没有影响，但影响晶体的形状，温度和溶剂的组成对CaCO3晶型和晶体形状有很大的影响。
Kinetics and mechanisms of heterogeneous reaction of NO2 on CaCO3 surfaces under dry and wet conditions
heterogeneous reaction CaCO3 surfaces dry wet
2010/2/1
With increasing NO2 concentration in the troposphere, the importance of NO2 reaction with mineral dust in the atmosphere needs to be evaluated. Until now, little is known about the reaction of NO2 wit...
采用激光扫描共焦显微镜、X射线衍射、循环伏安和交流阻抗等方法对由聚(偏二氟乙烯-六氟丙烯)(P(VDF-HFP))、聚甲基丙烯酸甲酯(PMMA)以及纳米碳酸钙(二氧化硅)制备的几种复合聚合物电解质(CPE)膜P(VDF-HFP)-PMMA/CaCO3(SiO2)的性能进行了研究. 结果表明, PMMA的加入能提高CPE的吸液率, 从而增大其离子导电率. 在P(VDF-HFP)与PMMA质量比为...
Net Loss of CaCO3 from a subtropical calcifying community due to seawater acidification:mesocosm-scale experimental evidence
CaCO3 subtropical calcifying community seawater acidification experimental evidence
2010/1/20
Acidification of seawater owing to oceanic uptake of atmospheric CO2 originating from human activities such as burning of fossil fuels and land-use changes has raised serious concerns regarding its ad...
桂林洞穴滴水及现代碳酸钙(CaCO3)沉积的碳同位素记录及其环境意义
现代碳酸盐沉积 碳同位素 环境意义 桂林盘龙洞
2013/11/12
经过前期(1995~2000年)及近2 a对桂林盘龙洞13个滴水点的2 个水文年的滴水和现代碳酸钙沉积的动态监测, 发现现代洞穴碳酸钙(CaCO3)沉积有两种类型: ①常年性滴水沉积碳酸盐, 其δ13C值记录了全年气候变化特征; ②季节性滴水沉积碳酸盐, 其δ13C值记录了季节性气候变化特征。现代碳酸盐沉积监测和碳同位素分析表明, 桂林盘龙洞外部峰体主要为C3植物(几乎没有C4植物), 现代沉积碳...
The heterogeneous chemical kinetics of N2O5 on CaCO3 and other atmospheric mineral dust surrogates
heterogeneous chemical kinetics N2O5 CaCO3 atmospheric mineral dust surrogates
2009/1/6
Uptake experiments of N2O5 on several mineral dust powder samples were carried out under continuous molecular flow conditions at 298±2 K. At [N2O5]0=(4.0±1.0)×1011 cm−3 we have found γss values ...
民和黄土地处黄土高原与青藏高原东北缘的交接部位，对气候反应较敏感。对该黄土1.87～0.70
Ma BP段进行了CaCO3和有机碳总量(TOC)的采样分析。民和黄土CaCO3含量在5.89%～18.63%之间变化，平均11.41%；有机碳含量较低，在0.007%～0.452%之间，平均0.088%。民和黄土中的CaCO3含量明显高于兰州、洛川和西安等地，而有机碳含量则远低于上述...
微波法合成红色荧光粉CaCO3∶Eu3+
CaCO3∶Eu3+ 微波合成 红色 发光材料
2010/3/23
采用微波法合成了红色荧光粉CaCO3∶Eu3+。通过SEM，XRD和PL-PLE光谱等对样品的性能进行了表征和分析。同时，研究了微波功率对样品发光性能的影响。结果表明： 样品在不同功率下会生成球霰石型的花片状、方解石型的立方体和文石型的针状等不同晶型的碳酸钙，颗粒的分散性好。波谱分析说明，掺杂Eu3+作为发光中心进入到CaCO3晶格中，其激发光谱主要由200～300 nm的Eu3+—O2-电荷迁移...
Modeling the marine aragonite cycle:changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution
marine aragonite cycle changes carbon dioxide shallow water CaCO3 dissolution
2010/1/18
The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a fun...