美国CHEMetricsK-3803型Cyanide(free)***盒用于测试水中Cyanide(free)含量。例如：饮用水，新鲜的地表水。不建议用于海水。建议对废水样品进行预蒸馏。该***盒需要使用CHEMetrics直读光度计（多参数水质分析仪：V-2000/V-3000或13mm圆形比色皿的分光光度计。规格参数：产品类型Cyanide(free)—Vacu-vials®InstrumentalKit产品型号K-3803测试范围0-0.400ppm测试方法Isonicotinic-BarbituricAcid测试次数30次/盒产品价格咨询上海益朗仪器有限公司辅助器具30支安瓿瓶、1瓶中和剂溶液、1瓶活化剂溶液、1个25mL样品杯、1支3.0mL移液管、1支空白安瓿瓶、1份说明书Vacu-vials®是美国CHEMetrics的专利（专利号：3,634,038）。美国CHEMetricsCyanide(free)测试盒VisualKits测试范围MDL测试方法测试盒货号填充盒货号0-0.1&0.1-1ppm0.005ppmIsonicotinic-BarbituricAcidK-3810R-3810InstrumentalKits测试范围测试方法测试盒目录0-0.400ppm异烟酸-***酸K-3803MethodCyanideisusedinmanychemicalandrefiningprocesses.Itisfoundineffluentfromelectroplatingandmetalcleaningoperati***,cokeovens,steelmanufacturingfacilities,andgasscrubbers.Althoughcyanidecanbesafelyremovedbyalkalinechlorination,itsacutetoxicitytoaquaticlifenecessitatesroutinemonitoringofeffluents.TheMaximumContaminantLevelforfreecyanideindrinkingwateris0.2mg/L.CHEMetrics’cyanidetestkitsareapplicabletothemonitoringofeffluentsandsurfacewatersupplies.Itisrecommended,however,thatthesamplebedistilledandhydrogensulfideberemovedpriortoanalysis.TheIsonicotinic-BarbituricAcidMethodReference:S.Nagashima,SpectrophotometricDeterminationofCyanidewithIsonicotinicAcidandBarbituricAcid,InternationalJournalofEnviron.Anal.Chem.,1981,Vol.10,pp.99-106.IntheCyanideCHEMets®andVacu-vials®Kit,chlorineisaddedtoasamplethathasbeenbufferedtopH6.Theresultingcyanogenchloridereactswithisonicotinicandbarbituricacidstoformabluecolor.Resultsareexpressedasppm(mg/L)CN.Thischemistryprovidestwoadvantagesoverthemorecommonlyusedpyridinemethods:(1)Theshelflifeofthereagentisextended,and(2)theanalystisnotexposedtonoxiousandhazardousfumesfromthepyridinereagent.)