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| 1 | A Review of Atmospheric Chemistry Research in China:Photochemical Smog, Haze Pollution,and Gas-Aerosol Interactions显示文摘In this paper we present a review of atmospheric chemistry research in China over the period 2006-2010, focusing on tropospheric ozone, aerosol chemistry, and the interactions between trace gases and aerosols in the polluted areas of China. Over the past decade, China has suffered severe photochemical smog and haze pollution, especially in North China, the Yangtze River Delta, and the Pearl River Delta. Much scientific work on atmospheric chemistry and physics has been done to address this large-scale, complex environmental problem. Intensive field experiments, satellite data analyses, and model simulations have shown that air pollution is significantly changing the chemical and physical characters of the natural atmosphere over these parts of China. In addition to strong emissions of primary pollutants, photochemical and heterogeneous reactions play key roles in the formation of complex pollution. More in-depth research is recommended to reveal the formation mechanism of photochemical smog and haze pollution and their climatic effects at the urban, regional, and global scales. | 马建中 徐晓斌 赵春生 颜鹏 | 2012 | Advances in Atmospheric Sciences2012，29，5： | 50 |
| 2 | 加速溶剂萃取/气相色谱-质谱法分析朝鲜淫羊藿挥发油成分显示文摘为探究朝鲜淫羊藿挥发油的化学成分,采用加速溶剂萃取法(ASE)提取朝鲜淫羊藿挥发油,气相色谱-质谱联用(GC/MS)分析检测,在完全随机设计优化ASE的萃取条件下,萃取收率4.0%,通过NIST98谱图库检索,确认挥发油中包含91种化合物,并用峰面积归一化法,求得各化学成分在挥发油中的质量分数.结果表明:朝鲜淫羊藿挥发油中的主要化学成分为依次为:4,4a,5,6,7,8-2(3H)-萘酮;1,2-苯二羧酸;十氢-4a-甲基-1-萘;N,N'-二(1-·甲基)-1,4-苯二胺;丁基-1,2-苯基双环二羧酸;硼酸乙基二癸酯等. | 陆钊 高凯 潘淑霞 汪东芳 张帅 | 2011 | 哈尔滨工业大学学报2011，43，8： | 5 |
| 3 | Chemical composition and Pb(II)binding of dissolved organic matter in a hypersaline lake in China显示文摘Dissolved organic matter(DOM)plays a vital role in promoting carbon and nutrient cycling.It is a food source for organisms and controls the migration and transformation of trace metals and other contaminants in aquatic systems.The contributions of aquatic DOM to the environment and ecology of a system are closely related to its abundance and chemical structure.In this study,the chemical composition and binding properties of DOM in a hypersaline lake watershed were investigated for the fi rst time using dissolved organic carbon(DOC)analysis,absorption spectroscopy,Fourier transform infrared spectroscopy,pyrolysis-GC-MS(Py-GC-MS),and fl uorescence parallel factor(PARAFAC)analysis combined with Pb(II)titration techniques.The results showed that DOM from the tributaries that fl owed into the lake had a lower DOC content,higher molecular weight,and higher specifi c UV absorbance than the DOM in lake water.Protein-like fl uorophores were mainly found in tributary and lake surface water DOM(LSDOM)and humic-like substances were abundant in lake groundwater DOM(LGDOM).Using this multi-methodological approach,we found that the DOM from the hypersaline lake watershed was mainly from microbial origins,and consisted of aromatics,carbohydrates,and aliphatics.The results from quantitative analysis showed that DOM from the infl owing tributaries contained more aromatics,lower carbohydrates,and lower aliphatics than DOM in the lake.Monocyclic aromatic hydrocarbons and carbohydrates were more abundant in LSDOM than LGDOM.The results from the Pb(II)titration technique coupled with PARAFAC analysis suggested that PARAFAC-derived components had relatively low condition stability constants(log K_(M)<2).Of the two types of lake DOM,the LGDOM had a higher Pb(II)binding potential than the LSDOM.From this study we have improved our understanding of how DOM within a hypersaline lake watershed varies in its composition and potential to bind with metals. | Keli YANG Yaoling ZHANG Yaping DONG Wu LI | 2022 | Journal of Oceanology and Limnology2022，40，1： | 1 |
| 4 | 固相萃取-热裂解-气相色谱-串联质谱法测定盐湖卤水中溶解性有机质显示文摘以青藏高原地区的大柴旦盐湖湖表卤水为研究对象,采用不同的固相萃取(Solid phase extraction,SPE)材料(HLB,PPL,ENVI-18,ENVI-Carb,XAD8和XAD4)对大柴旦盐湖湖表卤水中DOM进行了分离和富集,初步建立了从高盐体系盐湖卤水中高效分离富集出具有代表性的溶解性有机质(Dissolved organic matter,DOM)的方法,系统的考察了pH,上样体积,柱流速和洗脱溶剂对DOM回收率的影响。结合傅里叶变换红外光谱分析(Fourier transform infrared spectroscopy,FTIR)、热裂解—气相色谱—串联质谱分析(Pyrolysis-gas chromatography-mass spectrometry,Py-GC/MS)进一步对盐湖卤水分离物进行了谱学表征。研究结果表明,盐湖卤水在酸性条件下(pH=2),柱流速为0.5 mL/min时有助于吸附剂对DOM的吸附,而随着上样体积的增加,DOM的回收率逐渐下降,而甲醇是比较理想的洗脱剂。大柴旦盐湖湖表卤水中的DOM主要以芳香类,碳水化合物以及部分脂肪族化合物为主,而含氮类化合物含量较少。 | 杨克利 张耀玲 董亚萍 李武 | 2020 | 盐湖研究2020，28，3： | 0 |
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