压水堆一回路冷却剂中硼酸对联氨测量影响分析  

Influence Analysis on Boric Acid in Primary Coolant of Pressurized Water Reactors on Measurement of Hydrazine

作　　者：张术勇 林政霖 余远红 ZHANG Shuyong;LIN Zhenglin;YU Yuanhong(Taishan Nuclear Power Joint Venture Co.,Ltd.)

机构地区：[1]台山核电合营有限公司

出　　处：《上海节能》2023年第9期1377-1381,共5页Shanghai Energy Saving

摘　　要：联氨作为除氧剂,常用于压水堆核电厂一回路化学除氧。通常采用分光光度法测量水体中的联氨含量。通过实验方法考察了一回路硼酸浓度对分光光度法测量联氨含量的影响。研究结果表明:硼酸本身不与显色剂反应;联氨与显色剂反应后吸收峰位置不随硼酸浓度改变而改变。随着硼酸浓度增加,吸光度会稍有增加,但低于测量控制的最大允许误差。在分析过程中可以忽略硼酸对联氨浓度测量的影响。Hydrazine,as a deoxidizer,is commonly used for chemical deoxygenation in the primary cir-cuit of pressurized water reactor nuclear power plants.Usually,spectrophotometry is used to measure the content of hydrazine in water bodies.The influence of boric acid concentration in the primary circuit on the spectrophotometric measurement of hydrazine content was investigated through experimental methods.The research results indicate that boric acid itself does not react with chromogenic agents;The position of the absorption peak does not change with the concentration of boric acid after the reac-tion of hydrazine with the chromogenic agent.As the concentration of boric acid increases,the absor-bance will slightly increase,but it is below the maximum allowable error of measurement control.The influence of boric acid on the measurement of hydrazine concentration can be ignored during the analy-sis process.

关 键 词：联氨 硼酸 分光光度法 

分 类 号：TM623.91[电气工程—电力系统及自动化]