CAJ | 학술논문

为建立一种快速、准确的测定底泥中的氰化物方法，采用顶空-气相色谱法对底泥中的氰化物进行测定。结果表明：将底泥经纯水超声、萃取、离心后取上层清液置于50 mL 顶空瓶中，加入衍生化试剂、置于45℃恒温水浴中，反应、平衡25 min，抽取顶空气体100μL 注入气相色谱仪配电子捕获检测器进行测定的标准加入回收率为97．36％，方法精密度为3．43％，方法检出限为0．3ug／kg，该方法简单、快速、对人体伤害小。
위건립일충쾌속、준학적측정저니중적청화물방법，채용정공-기상색보법대저니중적청화물진행측정。결과표명：장저니경순수초성、췌취、리심후취상층청액치우50 mL 정공병중，가입연생화시제、치우45℃항온수욕중，반응、평형25 min，추취정공기체100μL 주입기상색보의배전자포획검측기진행측정적표준가입회수솔위97．36％，방법정밀도위3．43％，방법검출한위0．3ug／kg，해방법간단、쾌속、대인체상해소。
To establish a rapid,accurate method for the determination of cyanide in the sediment, cyanide was determined in sediment by headspace gas chromatography. Results: The sediment was ultrasounded by pure water,extracted and centrifuged.Taking the supernatant to 50 mL headspace bottle,adding derivatization reagent,constant temperature water bath at 45℃,reaction,equilibrium 25 min.100 μL headspace gas wa injected into the gas chromatograph and measured by the electron capture detector.The rate of recovery is 97.36%,precision is 3.43%,detection limit of the method is 0.3 ug/kg, this method is simple and rapid with less damage to human body.