| 胶州湾及邻近海域表层海水中一氧化氮浓度分布及其影响因素探讨 |
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| 引用本文： | 薛超,刘春颖,杨桂朋,祝陈坚,张洪海.胶州湾及邻近海域表层海水中一氧化氮浓度分布及其影响因素探讨[J].环境科学,2012,33(4):1086-1090. |
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| 作者姓名： | 薛超 刘春颖 杨桂朋 祝陈坚 张洪海 |
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| 作者单位： | 中国海洋大学化学化工学院, 海洋化学理论与工程技术教育部重点实验室,青岛 266100;中国海洋大学化学化工学院, 海洋化学理论与工程技术教育部重点实验室,青岛 266100;中国海洋大学化学化工学院, 海洋化学理论与工程技术教育部重点实验室,青岛 266100;中国海洋大学化学化工学院, 海洋化学理论与工程技术教育部重点实验室,青岛 266100;中国海洋大学化学化工学院, 海洋化学理论与工程技术教育部重点实验室,青岛 266100 |
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| 基金项目： | 国家自然科学基金项目(40706040,41176062); 山东省中青年科学家科研奖励基金项目(2007BS08015); 山东省自然科学基金项目(Y2008E04); 教育部"长江学者"奖励计划项目; 山东省"泰山学者"建设工程项目 |
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| 摘 要： | 2011年2～3月利用化学发光法对胶州湾及邻近海域表层海水中一氧化氮(NO)浓度进行了监测.结合水文、化学和生物等要素的同步观测资料,对该海域NO浓度分布及其影响因素进行了探讨.结果表明,胶州湾内表层海水中NO浓度为0.080～0.493 nmol.L-1,平均值为(0.292±0.146)nmol.L-1,胶州湾外NO浓度为未检出～0.435 nmol.L-1,平均值为(0.160±0.130)nmol.L-1.总体来说,胶州湾表层海水中NO浓度呈现出自湾内向湾外递降的分布趋势,陆地径流和人为活动可能对NO浓度的分布造成一定程度的影响.胶州湾及邻近海域表层海水中NO浓度比开阔大洋高1个数量级.周日变化研究表明,NO浓度具有一定的变化特征,最大值出现在15:00,这可能主要受光照的影响.影响NO浓度分布的因素比较复杂,可能主要受亚硝酸盐、光强和pH等因素的影响.结果表明,2011年春季胶州湾及邻近海域表层海水是大气NO的源,通量约为1.09×10-15 mol.(cm2.s)-1.
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| 关 键 词： | 一氧化氮(NO) 胶州湾 浓度分布 周日变化 影响因素 |
| 收稿时间： | 2011/5/19 0:00:00 |
| 修稿时间： | 2011/8/29 0:00:00 |
Distribution and Controlling Factors of Nitric Oxide Concentrations in Surface Seawater of Jiaozhou Bay and Adjacent Waters |
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| XUE Chao,LIU Chun-ying,YANG Gui-peng,ZHU Chen-jian and ZHANG Hong-hai.Distribution and Controlling Factors of Nitric Oxide Concentrations in Surface Seawater of Jiaozhou Bay and Adjacent Waters[J].Chinese Journal of Environmental Science,2012,33(4):1086-1090. |
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| Authors: | XUE Chao LIU Chun-ying YANG Gui-peng ZHU Chen-jian and ZHANG Hong-hai |
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| Institution: | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China |
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| Abstract: | Distribution of nitric oxide (NO) concentrations in surface seawater of Jiaozhou Bay and adjacent waters was studied adopting the chemiluminescence method during February and March 2011. Based on the data of NO concentrations and related environmental parameters in hydrology, chemistry and biology, the distribution and controlling factors were discussed. The results showed that the range and the mean of NO concentrations in surface seawater of Jiaozhou Bay were 0.080-0.493 nmol·L-1 and (0.292±0.146) nmol·L-1, respectively. The concentrations of NO ranged from below detection limit to 0.435 nmol·L-1 in adjacent waters of Jiaozhou Bay, with the mean of (0.160±0.130) nmol·L-1. The concentrations of NO showed a gradually decreasing trend from inside to outside of Jiaozhou Bay, which was possibly due to the effect of terrestrial runoff and human activities. The NO concentration of surface seawater in Jiaozhou Bay and adjacent waters was one order of magnitude higher than that in the open sea. The concentrations of NO in the surface seawater exhibited an obvious diurnal variation. The highest concentration of NO appeared at 15:00,which was presumably due to the effect of illumination intensity. The influencing factors of NO concentration and distribution were complex, including nitrite, pH, light intensity and so on.The present study showed that Jiaozhou Bay and adjacent waters was a source of atmosphere NO in spring,and FNO was about 1.09×10-15 mol·(cm2·s)-1. |
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| Keywords: | nitric oxide (NO) Jiaozhou Bay concentration distribution diurnal variation environmental factors |
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