维普中文期刊产品整合服务
8篇 您的检索式:作者名="Cheng Xianhao"
    题名 作者 年代 出处 被引量
1Wastewater analysis for volatile organic sulfides using purge-and- trap with gas chromatography/mass spectrometry 显示文摘CHENG Xianhao PETERKIN E NARANGAJAVANA K 2007Water Environment Research2007,79,4:1
2A study on volatile organic sulfide causes of odors at Philadelphia' s Northeast Water Pollution Control Plant显示文摘Cheng Xianhao Peterkin Earl Gary A Burlingame 2005Water Research2005,39,16:1
3A Study on Volatile Organic Sulfide Causes of Odors at Philadelphia's Northeast Water Pollution Control Plant 显示文摘Xianhao Cheng Peterkin E Burlingame G A 2005Water Res2005,39,16:1
4Some factors affecting SPME analysis and PAHs in Philadelphia’s urban waterways显示文摘Xianhao Cheng Jennifer Forsythe Earl Peterkin 2013Water Research2013,,:1
5REMOBILIZATION AND ACCUMULATION OF IODINE IN MARINE SEDIMENTS, WESTERN ANTARCTIC OCEAN显示文摘Remobilization and accumulation mechanisms of iodine in marine sediments, which are divided into several geochemical environment, are studied. The result shows that iodine is characteristically rich in organic fractions of the sediments on the bottom of bay and pelagic sediments. However, it may be associated with oxyhydroxide and adsorptive phase in a highter percentage at the continental shelf and hemipelagic sediments. The environmental characteristics of remobilization of iodine in surficial sediments are similar to that of iron, that is, it is remobilized on anoxic conditions and converted into solid phases when it is in oxic environments, though the iodine does not act as the electron acceptor. The processes of adsorption and oxidation are responsible for the value of It/Corg in excess of that of planktonic materials other than the organic fraction in surficial sediments. It is a comprehensive effect of organism decomposition, oxyhydroxide reduction, particulate adsorption and pore waterCheng Xianhao, Xia Weiping, and Zhang HaishengSecond Institute of Oceanography, SOA Hangzhou 310012 1992Chinese Journal of Polar Science1992,3,1:0
6Zonal discrepancy of iodine in the West Pacific Ocean and its adjacent seas显示文摘The species of iodine in the water samples collected from the west Pacific Ocean and its adjacent seas were analysed. Results show that the concentration of total inorganic iodine appears higher in the south than that in the north of the Equator. The iodide concentration is distributed symmetrically on both sides of the Equator in tropic and subtropic zones and it decreases away from the Equator. Around the Antarctic Divergence iodide concentration approaches its minimum in the surface waters .which only accounts for 10% of the total iodine. The dissolved organic iodine concentration keeps constant generally either in horizontal or in vertical. Discussions on the relationships of iodine with chemical, biological and hydrological factors reveal that iodine has a transitional behavior between conservative and biodepleting elements; I/S ratio is of a certain stability on a vast scale, however, it may be largely affected by organism activity in some zones. Besides, evidence shows that iodine is adsorbedCheng Xianhao, Yu Guohui and Zhang Ping Second Institute of Oceanography State Oceanic Administration, Hangzhou 310012 China 1993Acta Oceanologica Sinica1993,12,3:0
7The cause and mechanism of fluoride anomaly in krill显示文摘Thecauseandmechanismoffluorideanomalyinkrill¥ZhangHaisheng;PanJianming;ChengXianhaoandLiuXiaoya(SecondInstituteofOceanography...Zhang Haisheng Pan Jianming Cheng Xianhao and Liu Xiaoya(Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012, China) 1994Acta Oceanologica Sinica1994,13,4:0
8ANOMEALY OF FLUORINE IN A SEDIMENTARY SYSTEM, WESTERN ANTARCTIC OCEAN显示文摘Fluorine content in bulk sediment and its pore water in Western Antarctic Ocean is 200~395μg/g and 1.18~1.92ug/ml respectively, far below the average reported previously in the world oceans (540 ug/g and 2.7tg/ml, respectively). This study also shows that the distribution of fluorine in the sediments of the area is mainly controlled by the chemical composition of the material from the surrounding islands, and the element seems to be mostly incorporated in the hornblende, thus the correlation between the element and the hornblende amount in the sediments can be expressed statistically as following: F=217+ln Vh. The low concentration of fluorine in the pore water is largely due to the weak weathering process on the islands and the precipitation of the element with calcium. It can be indicated well by the lower value of anion-exchangeable (HCO3-) F- in the studied area, which is only about one tenth of that in Pacific Ocean and a quarter in South China sea and a half in the sea east of Zhejiang. InCheng Xianhao, Zhang Haisheng and Xia Weiping Second Institute of Oceanography, SOA, Hangzhou 310012 1991Chinese Journal of Polar Science1991,2,2:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费