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当前位置: 首页 > 文章 > 胶州湾及青岛近海海水pH值的分光光度法研究 海洋湖沼通报 2013 (3) 108-114
Position: Home > Articles > RESEARCH OF SPECTROPHOTOMETRIC pH MEASUREMENTS OF SEAWATERS IN JIAOZHOU BAY AND COASTAL WATERS OF QINGDAO Transactions of Oceanology and Limnology 2013 (3) 108-114

胶州湾及青岛近海海水pH值的分光光度法研究

作  者：
刘淑雅;刘春颖;延鹏;黄政然;彭彤;周玉娟;丁海兵
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
关键词：
胶州湾;青岛近海;pH;分光光度法;互校
摘  要：
采用间甲酚紫和百里酚蓝指示剂,对2011年9～11月在胶州湾及2012年4月在青岛近海采集的表层水样使用分光光度法测定pH,与电极电位法进行互校。通过对53个样品、144个数据进行分析,结果发现分光光度法测定值一般低于电极电位法,间甲酚紫为指示剂的测定值与电极电位法测定值的差值为0.104±0.027,百里酚蓝为0.103±0.057。电极电位法分析得到2011年胶州湾秋季表层海水pH范围是7.641～8.158,平均为7.947±0.118,青岛近海海水pH范围是7.949～8.087,平均为8.052±0.046。通过对近几年胶州湾及青岛近海海水pH的分析,2007(2011年表层海水pH值呈先升后降,总体下降了0.06±0.05;胶州湾红岛海域在2003—2011年pH值变化趋势是先下降后升高再下降,目前pH值较2003年下降了0.09;大沽河附近海域2006—2011年pH值变化趋势与红岛海域基本一致;青岛近海pH值较2003年仅下降0.02。胶州湾及青岛近海海水pH值总体上呈现下降的趋势
译  名：
RESEARCH OF SPECTROPHOTOMETRIC pH MEASUREMENTS OF SEAWATERS IN JIAOZHOU BAY AND COASTAL WATERS OF QINGDAO
作  者：
LIU Shuya;LIU Chunying;YAN Peng;HUANG Zhengran;PENG Tong;ZHOU Yujuan;DING Haibing;Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,College of Chemistry and Chemical Engineering,Ocean University of China;
关键词：
Jiaozhou Bay;;Qingdao offshore;;pH;;spectrophotometric measurements;;intercalibration
摘  要：
It is compared pH measured by spectrophotometric and potentiometric methods for seawater samples which were collected in Jiaozhou Bay in autumn,2011and Qingdao coast on april 15th of 2012.53samples were analyzed and found that the pH values obtained by potentiometric measurements were higher than those by spectrophotometric method and the average of difference between two methods was 0.104±0.027.The data showed that pH of Jiaozuo Bay varied from 7.862to 8.049and the average was 7.946±0.056.The range of pH in coastal waters of Qingdao was 7.949～8.087and the average was 8.052 0.046.In comparison with historical data,it is found there was a little variation of pH values.The pH value of surface seawater in Jiaozhou Bay in autumn of 2007～2011descended at first and then ascended and in the last descened by 0.06 0.05.The pH of Hongdao region descended at first and then ascended and in the last descened by 0.09.The pH value at the adjacent sea area of Dagu River had the similar trend to that of Hongdao area.The pH in coastal waters of Qingdao had varied only 0.02compared with 2003.The pH in Jiaozhou Bay and coastal waters of Qingdao presented a decreasing trend on the whole.

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