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本文报道了通过流动注入分析,进行河水、湖水和海水中亚硝酸盐的荧光光度测定。仪器。用Hitachi 650--10 S荧光光度计与18μl径流杯和Toa Dempa FBR-251A记录仪进行荧光测定。用2个活塞微型泵(SanukiKogyo Co Ltd)推进试剂、运载溶液和氢氧化钠溶液。样品(360μl)通过六通注射阀门注入运载流。用聚四氟乙烯管制备流送管。试剂。全部萘胺衍生物购于Tokyo CoLtd用时不需进一步提纯。
This paper reports the determination of nitrite in river water, lake water and seawater by flow injection analysis. instrument. Fluorescence was measured using a Hitachi 650-10 S fluorometer with an 18 μl Runoff Cup and a Toa Dempa FBR-251A recorder. Reagents were propelled with 2 piston mini pumps (Sanuki Kogyo Co Ltd), carrying solution and sodium hydroxide solution. The sample (360 μl) is injected into the carrier stream through a six-way injection valve. Prepare flow tube with Teflon tube. Reagents. All naphthylamine derivatives were purchased from Tokyo CoLtd without further purification.