CAJ | 학술논문

设计了水中镍（Ⅱ）自动在线分析仪，优化了仪器的最佳测试条件，并用该仪器用于环境水样中Ni（Ⅱ）的测定。在NaOH（pH＝12）介质中，以过硫酸铵为氧化剂，镍与丁二酮肟作用形成酒红色可溶性络合物，于波长465 nm处进行测定。方法在0.1～8.0 mg/L范围内呈良好线性关系，对浓度为0.5 mg/L、3 mg/L、6 mg/L的镍离子溶液进行测定，相对标准偏差分别为0.11％、0.12％、0.15％。方法的检出限为0.002 m g/L （3σ）。仪器操作简便、消耗试剂量少、测定快速、灵敏、适于现场即时监测。
설계료수중얼（Ⅱ）자동재선분석의，우화료의기적최가측시조건，병용해의기용우배경수양중Ni（Ⅱ）적측정。재NaOH（pH＝12）개질중，이과류산안위양화제，얼여정이동우작용형성주홍색가용성락합물，우파장465 nm처진행측정。방법재0.1～8.0 mg/L범위내정량호선성관계，대농도위0.5 mg/L、3 mg/L、6 mg/L적얼리자용액진행측정，상대표준편차분별위0.11％、0.12％、0.15％。방법적검출한위0.002 m g/L （3σ）。의기조작간편、소모시제량소、측정쾌속、령민、괄우현장즉시감측。
A new kind of flow injection on-line nickel analyzer for fast and accurate determination of nickel ion in industrial wastewater was developed .The device was based on a soluble red wine color com-plex formation between nickel ion and dimethylglyoxime (C4 H8 N2 O2 ) in sodium hydroxide (NaOH) solu-tion medium with ammonium persulfate (C4 H8 N2 O2 ) as the oxidant .The absorbance at 465 nm was pro-portional to the concentration of nickel ion in aqueous solution in the range of 0.05-8 mg/L .The detection limit was 0.002mg/L (3σ) .The concentralion of Ni2+ for 0 .5 ,3 .0 and 6 .0mg/L were determined ,and the relative standard deviations (n=11) were 0 .11% ,0 .12% and 0 .15% 0 .5 ,3 .0 and 6 .0 mg/L respec-tively .