【摘要】 对《海洋调查规范》中测定海水NO3-N的常规方法进行了优化 ,确立了使用磺胺和α -萘乙二胺混和试剂的方法。并对硝酸盐测定所使用的Cd -Cu还原柱、试剂及标准贮备液的稳定性进行了一系列的研究 ,改进试剂的保存方法 ,延长试剂使用寿命 ,以满足长期现场测定的要求更多还原

【Abstract】 The routine method of nitrate determination in seawater in "Marine Survey Criterion" has been optimized and a method with mixed reagents of sulfonamide and α-naphlthyl elthyl diamine was developed.The cadmium-copper reduction column,the stability of reagents and nutrient standard stock solution were studied in the determination of nitrate in seawater in situ for improving the preservation methods and prolonging the service life of reagents to meet the long-time demands of auto-analyzer.更多还原