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Microbial Gas in the Mohe Permafrost, Northeast China and its Significance to Gas Hydrate Accumulation in Permafrost across China

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Acta Geologica Sinica(English Edition) 2018年第6期92卷 2251-2266页

作者： ZHAO Xingmin SUN Youhong DENG Jian rao zhu Lü Cheng SONG Jian Li Lixia Oil & Gas Survey China Geological SurveyBeijing 100029China Jilin University Changchun 130012China National Research Center of Geoanalysis Beijing 100037China China University of Petroleum-Bejing Beijing 102249China CNOOC Research Institute Beijing 100028China

The Mohe permafrost in northeast China possesses favorable subsurface ambient temperature, salinity, Eh values and pH levels of groundwater for the formation of microbial gas, and the Mohe Basin contains rich organic matter in the Middle Jurassic dark mudstones. This work conducted gas chromatography and isotope mass spectrometry analyses of nearly 90 core gas samples from the Mk-2 well in the Mohe Basin. The results show that the dryness coefficient(C1/C1–5) of core hydrocarbon gas from approximately 900 m intervals below the surface is larger than 98%, over 70% of the δ13 C values of methane are smaller than-55‰, and almost all δD values of methane are smaller than-250‰, indicative of a microbial origin of the gas from almost 900 m of the upper intervals in the Mohe permafrost. Moreover, the biomarker analyses of 72 mudstone samples from the Mohe area indicate that all of them contain 25-norhopane series compounds, thereby suggesting widely distributed microbial activities in the permafrost. This work has confirmed the prevailing existence of microbial gas in the Mohe area, which may be a potential gas source of gas hydrate formation in the Mohe permafrost. This result is of great significance to gas hydrate accumulation in the permafrost across China.

关键词： microbial gas gas hydrate accumulation permafrost oil and gas Mohe northeast China

Synthesis and micellization behavior of stimuli-responsive polypeptide hybrid triblock copolymer

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Chinese Science Bulletin 2009年第8期54卷 1912-1917页

作者： rao JingYi zhu ZhiYuan LIU ShiYong Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Soft Matter Chemistry Department ofPolymer Science and Engineering University of Science and Technology of China Hefei 230026 China

Polypeptide hybrid triblock copolymer, poly(L-glutamic acid)-b-poly(propylene oxide)-b-poly (L-glu-tamic acid) (PLGA-b-PPO-b-PLGA), was synthesized by the ring-opening polymerization of benzyl-L-glutamic N-carboxyanhydride (BLG-NCA) using poly(propylene glycol) bis(2-aminopropyl ether) as initiator, followed by the subsequent deprotection step. The obtained double hydrophilic triblock co-polymer exhibits "schizophrenic" micellization behavior in aqueous solution upon dually playing with solution pH and temperature. The multi-responsive micellization behavior of this polypeptide hybrid triblock copolymer has been thoroughly investigated by 1H NMR, laser light scattering (LLS), tempera-ture-dependent optical transmittance, and circular dichroism spectroscopy (CD).

关键词：三嵌段共聚物胶束化行为混合多肽合成温度依赖性反应雷电定位系统

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环境有机污染物检测技术及其应用

地质学报 2011年第11期85卷 1948-1962页

作者：饶竹国家地质实验测试中心北京100037

随着地质工作重点由资源向资源与环境并重的转变,环境有机污染物检测技术成为地质调查和地质科研工作新的重要技术支撑。环境有机污染物检测技术主要分为样品采集与保存、样品前处理以及检测等部分。本文简述了地质行业环境有机污染物... 详细信息

随着地质工作重点由资源向资源与环境并重的转变,环境有机污染物检测技术成为地质调查和地质科研工作新的重要技术支撑。环境有机污染物检测技术主要分为样品采集与保存、样品前处理以及检测等部分。本文简述了地质行业环境有机污染物检测技术的发展和现状;介绍了环境有机样品的采集与保存方法;从分析原理、基本结构、应用范围、存在的问题等方面重点介绍了固相萃取、快速溶剂萃取、凝胶渗透色谱、吹扫-捕集等有机样品提取、净化、进样等前处理技术以及气相色谱、液相色谱和气相色谱-质谱联用检测技术;同时也对近年快速发展的全二维气相色谱、超高效液相色谱和液相色谱-质谱等新技术作了评述。文章收集了近年环境有机分析测试技术应用研究文献四十多篇。

关键词：环境有机污染物检测试技术样品采集与保存液-液萃取固相萃取固相微萃取基体分散固相萃取膜萃取静态顶空进样吹扫-捕集进样凝胶渗透色谱索氏抽提快速溶剂萃取微波萃取超临界流体萃取超声萃取气相色谱全二维气相色谱高效液相色谱超高效液相色谱气相色谱-质谱液相色谱-质谱

Distribution of aromatic amines,phenols,chlorobenzenes,and naphthalenes in the surface sediment of the Dianchi Lake,China

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Frontiers of Environmental Science & Engineering 2020年第4期14卷 125-137页

作者： Xinyi Hu Ting Yang Chen Liu Jun Jin Bingli Gao Xuejun Wang Min Qi Baokai Wei Yuyu Zhan Tan Chen Hongtao Wang Yanting Liu Dongrui Bai zhu rao Nan Zhan College of Life and Environmental Sciences Minzu University of ChinaBeijing 100081China School of Environment Tsinghua UniversityBeijing 100084China College of Environmental&Resource Sciences Zhejiang UniversityHangzhou 310058China Key Laboratory of Eco-geochemistry Ministry of Natural Resources of ChinaBeijing 100037China

Organic pollutants are widespread environmental pollutants with high toxicity,persistence,and *** aim was to investigate the distribution of aromatic amines,phenols,chlorobenzenes,and naphthalenes in the surface sediment of the Dianchi Lake,*** surface sediment samples were collected from the Dianchi Lake,and 40 types of organic pollutants were analyzed via gas chromatography-mass *** total organic pollutant concentrations in the surface sediment of the Dianchi Lake varied from 27.4 to 1.62×10^3 ng/*** concentrations of phenols were much higher than those in other water bodies but still within a controllable range,whereas the concentrations of the other organic pollutant classes were similar or even *** detection ratio of 3-or 4-methylphenol was the highest(100.00%)among the *** average total organic pollutant concentrations decreased in the following order:Caohai(540 ng/g)>the middle of Waihai(488 ng/g)>the edge of Waihai(351 ng/g)>Haigeng Dam(90.4 ng/g).Pearson analysis showed a strong correlation among 1-methylnaphthalene,2-methylnaphthalene,1,3-dinitronaphthalene,and 1,4-dinitronaphthalene(P<0.01).Caohai,the north lakeshore of Waihai and the south of Waihai showed higher risk because of high concentration;meanwhile,1,4-dichlorobenzene,3-or 4-methylphenol and 1,2,4-trichlorobenzene were mor e likely to cause risks.

关键词： Organic pollutants Lake sediment Spatial distribution Potential source

The Production and Release of CFCs from Coal Combustion

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Acta Geologica Sinica(English Edition) 2003年第1期77卷 81-85页

作者： LI Jiaxi, WANG Junzhi, LI Hong, rao zhu, LI Qi and LUO Songguang National Research Center of Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037 Chinese Acad Geol Sci Natl Res Ctr Geoanal Beijing 100037 Peoples R China

The destruction of the ozone layer in the atmosphere caused by industriallysynthesized CFCs has aroused greatest concerns from the international society, but the CFCs formedfrom burning of coal containing fluorine have not been recognized by the world yet. In the presentstudy, we condensed the gas through cold traps and used the GC-MS to measure the gas composition,and found that the content of CFC-12 in the smog from coal combustion was significantly higher thanthe background value of the local atmosphere. This proves that CFC- 12 is formed in the process ofcoal combustion. This paper discusses a new source of non-synthesized CFCs.

关键词： CFC-12 in coal combustion measurement of CFC-12 halo hydrocarbons fromcoal

鱼肉样品中的手性多氯联苯对映体的分离测定研究

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分析测试学报 2017年第6期36卷 744-749,755页

作者：朱帅饶竹国家地质实验测试中心北京100037

该文建立了鱼肉样品中7种手性多氯联苯(PCB 45,PCB 91,PCB 95,PCB132,PCB 136,PCB 149和PCB 174)对映体的分离测定方法。样品经快速溶剂萃取技术萃取后,浓缩液经过凝胶渗透色谱除脂及大分子物质后再依次通过酸性硅胶柱、复合硅胶柱净化... 详细信息

该文建立了鱼肉样品中7种手性多氯联苯(PCB 45,PCB 91,PCB 95,PCB132,PCB 136,PCB 149和PCB 174)对映体的分离测定方法。样品经快速溶剂萃取技术萃取后,浓缩液经过凝胶渗透色谱除脂及大分子物质后再依次通过酸性硅胶柱、复合硅胶柱净化和碱性氧化铝柱分离得到PCBs组分。在气相色谱-质谱(GC-EI/MS)上对比研究了Bate Dex-325,CP-Chirasil,BGB-172SE,Chirasil-Dex和Cyclosil-B手性色谱柱的拆分效果,发现7种手性PCBs在Cyclosil-B毛细管柱上的分离效果最好,其分离度为0.8~2.3,可以实现基线分离。在优化色谱条件下,7种手性PCBs在10~200μg·L-1浓度范围内线性良好,相关系数为0.998~1.000,方法检出限(S/N=3)为0.4~5.0 ng·g-1。在高、低2个加标水平下,7种手性PCBs的回收率为89.2%~114%,相对标准偏差为0.3%~2.1%,表明方法灵敏度高、回收率好、准确度高。采集广东电子垃圾拆解污染区鱼类样品验证方法的适用性,结果显示鱼肉样品中均检出7种手性PCBs,3种鱼肉样品中7种手性PCBs的总浓度为386.7~602.8 ng·g-1。对3种鱼肉组织中7种手性PCBs的EF值进行测定,发现PCB 45,PCB 91,PCB 95,PCB 132,PCB 136和PCB 174的EF值与标准品具有显著差异,表明这些手性PCBs在鱼类体内可能具有对映体选择性富集和代谢作用,此外PCB 45,PCB 91,PCB 95,PCB 132和PCB136在3种鱼肉组织中的分布特征相似,而PCB174的EF值在乌鳢体内大于标准品,而在鲮鱼、鲫鱼体内却小于标准品,表明PCB174在乌鳢和鲮鱼、鲫鱼体内的选择性代谢过程可能相反。

关键词：手性多氯联苯气相色谱-质谱鱼肉对映体分离

An Analytic Model of Subminiature Auditory Sensation System for Sound Source Localization

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Chinese Journal of Biomedical Engineering(English Edition) 2007年第4期16卷 148-154页

作者： WANG Qing-sheng TA Na rao zhu-shi State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University Shanghai 200240 China

It is reported that some types of insects have a remarkable ability to detect the direction of an incident sound even though its acoustic sensory organs are in very close proximity each other. Maybe the ears are jointed by a cuticular structure with which the separated motions can be coupled mechanically and thus be magnified. In this paper, a detailed model is setup to describe the principle of this type of localization using a mechanical coupled structure. The transfer functions and the responses of the model in terms of time and frequency are analyzed to describe the mechanism of its ability of directional hearing. This analytical model provides a method to design the experimental model for the predetermined incident sound pressure, and the analysis of this model shows that this structure have the ability to determine the direction of the incident stimulus.

关键词： parasitoid fly biomechanics coupled structure sound source' s orientation

吹扫捕集/气相色谱-质谱法测定水中痕量全氟碘烷类化合物

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分析测试学报 2018年第11期37卷 1359-1364页

作者：朱帅贾静饶竹国家地质实验测试中心国土资源部生态地球化学重点实验室北京100037

利用吹扫捕集/气相色谱-质谱联用技术,建立了一种同时测定水中9种全氟碘烷类化合物的新方法,并对捕集管的型号、吹扫温度、吹扫时间、解吸时间及盐效应等样品吹扫条件进行了优化。在最佳实验条件下,9种全氟碘烷类化合物在0. 1～100μg·... 详细信息

利用吹扫捕集/气相色谱-质谱联用技术,建立了一种同时测定水中9种全氟碘烷类化合物的新方法,并对捕集管的型号、吹扫温度、吹扫时间、解吸时间及盐效应等样品吹扫条件进行了优化。在最佳实验条件下,9种全氟碘烷类化合物在0. 1～100μg·L-1范围内线性关系良好,相关系数(r2)不小于0. 996,方法检出限为5. 6～15 ng·L-1,定量下限为17～36 ng·L-1。在高、中、低3个加标水平下,9种全氟碘烷类化合物的回收率为75. 7%～118%,相对标准偏差为2. 2%～8. 3%。将建立的方法用于某典型污染区域环境水样的分析,检出9种全氟碘烷类化合物,质量浓度为21. 3～469 ng·L-1。

关键词：全氟碘烷类化合物吹扫捕集气相色谱-质谱(GC-MS) 水

顶空-固相微萃取-全二维气相色谱-飞行时间质谱测定水中短链氯化石蜡

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分析化学 2018年第12期46卷 2004-2010页

作者：战楠朱帅郭峰田芹饶竹国家地质实验测试中心自然资源部生态地球化学重点实验室

短链氯化石蜡(SCCPs)是一种新型持久性环境污染物,准确分析水中SCCPs对研究和正确认识水环境中SCCPs的污染水平、环境行为等均具有重要意义。本研究建立了顶空-固相微萃取-全二维气相色谱-飞行时间质谱技术分析水中SCCPs的方法,确定了... 详细信息

短链氯化石蜡(SCCPs)是一种新型持久性环境污染物,准确分析水中SCCPs对研究和正确认识水环境中SCCPs的污染水平、环境行为等均具有重要意义。本研究建立了顶空-固相微萃取-全二维气相色谱-飞行时间质谱技术分析水中SCCPs的方法,确定了萃取探针、萃取温度、萃取时间、体系盐度、搅拌速率等最佳实验条件。本方法在0.2～20.0μg/L浓度范围内线性良好,相关系数大于0.999,检出限在0.06～0.13μg/L之间,平均加标回收率在80.9%～95.4%之间,日内和日间精密度(RSD)分别小于7.1%(n=5)和14.0%(n=5)。本方法灵敏、准确、环境友好、可自动化运行,已成功应用于皮革加工厂周围地下水和地表水中SCCPs的分析。

关键词：短链氯化石蜡固相微萃取全二维气相色谱-飞行时间质谱水质分析