河北工业科技2018，Vol.35Issue(1)：12-17,6.DOI:10.7535/hbgykj.2018yx01003
微波消解-流动注射法测定海水中总磷
Determination of total phosphorus in seawater by microwave digestion-flow inj ection spectrophotometry
摘要
Abstract
In order to monitor the total phosphorus level in the coastal waters in real time.A method for determination of total phosphorus in water by digestion and flow injection spectrophotometry is described.Total nitrogen is determined continuously by controlling program in the coastal area.Effects of experimental conditions have been optimized,including the digestion condi-tion,the order of liquid and the mass concentration of the color developing agent.Under the optimal conditions,the concentra-tion of phosphorus in seawater is in good linear relation with absorbance.The relative standard deviations (RSD)of TP is less than 4.095%.The standard addition recoveries of TP are from 95% to 98%.The method has high sensitivity as well as preci-sion.Zerodrift rate and range drift rate are less than ±0.1% and ±3%respectively.The determination results agree well with those obtained by the specification for automated water quality monitoring in coastal area (HJ 731—2014).The determination of total phosphorus in surface waters of Dalian Tiger Beach concentration of 0.068 9 mg/L,0.069 3 mg/L with national stand-ard method(GB/T 12763.4—2007)of measurement results.There is no significant difference.The determination results agree with those obtained by the national standard method.The content of total phosphorus in seawater can be quickly determined by this method.It provides reliable data for the eutrophication of sea water and realize early warning and monitoring.关键词
环境生态学/总磷/微波消解/流动注射法(FIA)/海水Key words
environmental ecology/total phosphorus/microwave digestion/flow injection analysis (FIA)/sea water分类
资源环境引用本文复制引用
王盼盼,崔建升,魏福祥,何礼,王中荣,屈加豹,刘大喜..微波消解-流动注射法测定海水中总磷[J].河北工业科技,2018,35(1):12-17,6.基金项目
国家海洋公益性行业科研专项(201505007) （201505007）
