核化学与放射化学
覈化學與放射化學
핵화학여방사화학
HE HUAXUE YU FANGSHE HUAXUE
2009年
4期
242-245
,共4页
王锦花%王生秀%吴明红%包伯荣%吴君萍%郑卫芳%张生栋
王錦花%王生秀%吳明紅%包伯榮%吳君萍%鄭衛芳%張生棟
왕금화%왕생수%오명홍%포백영%오군평%정위방%장생동
FHA%HNO_3%辐解%氢气%一氧化碳
FHA%HNO_3%輻解%氫氣%一氧化碳
FHA%HNO_3%복해%경기%일양화탄
formohydroxamic acid%nitric acid%radiolysis%hydrogen%carbon monoxide
甲异羟肟酸(FHA)是有望用于乏燃料后处理的新型无盐络合剂.用5(A)分子筛填充柱与热导池检测器(TCD)联用的气相色谱法研究了HNO_3-0.2 mol/L FHA辐解产生的H_2和CO.H_2的分析是以Ar作载气,柱温为85 ℃,TCD温度为120 ℃; CO的分析是以H_2作载气,柱温为50 ℃, TCD温度为80 ℃.研究结果表明,H_2的体积分数随剂量的增加而增大,随HNO_3浓度的增大而减小;CO只有在剂量很高时才产生,且其体积分数远比H_2低,CO的体积分数随剂量的增加而增加.当c(HNO_3)≤0.5 mol/L时,CO体积分数低于0.2 mol/L FHA水溶液辐解产生的CO,但当c(HNO_3)≥1.0 mol/L时,CO的体积分数大于0.2 mol/L FHA水溶液辐解产生的CO, 且CO体积分数随c(HNO_3)的增大而增大.
甲異羥肟痠(FHA)是有望用于乏燃料後處理的新型無鹽絡閤劑.用5(A)分子篩填充柱與熱導池檢測器(TCD)聯用的氣相色譜法研究瞭HNO_3-0.2 mol/L FHA輻解產生的H_2和CO.H_2的分析是以Ar作載氣,柱溫為85 ℃,TCD溫度為120 ℃; CO的分析是以H_2作載氣,柱溫為50 ℃, TCD溫度為80 ℃.研究結果錶明,H_2的體積分數隨劑量的增加而增大,隨HNO_3濃度的增大而減小;CO隻有在劑量很高時纔產生,且其體積分數遠比H_2低,CO的體積分數隨劑量的增加而增加.噹c(HNO_3)≤0.5 mol/L時,CO體積分數低于0.2 mol/L FHA水溶液輻解產生的CO,但噹c(HNO_3)≥1.0 mol/L時,CO的體積分數大于0.2 mol/L FHA水溶液輻解產生的CO, 且CO體積分數隨c(HNO_3)的增大而增大.
갑이간우산(FHA)시유망용우핍연료후처리적신형무염락합제.용5(A)분자사전충주여열도지검측기(TCD)련용적기상색보법연구료HNO_3-0.2 mol/L FHA복해산생적H_2화CO.H_2적분석시이Ar작재기,주온위85 ℃,TCD온도위120 ℃; CO적분석시이H_2작재기,주온위50 ℃, TCD온도위80 ℃.연구결과표명,H_2적체적분수수제량적증가이증대,수HNO_3농도적증대이감소;CO지유재제량흔고시재산생,차기체적분수원비H_2저,CO적체적분수수제량적증가이증가.당c(HNO_3)≤0.5 mol/L시,CO체적분수저우0.2 mol/L FHA수용액복해산생적CO,단당c(HNO_3)≥1.0 mol/L시,CO적체적분수대우0.2 mol/L FHA수용액복해산생적CO, 차CO체적분수수c(HNO_3)적증대이증대.
Formohydroxamic acid (FHA) is a new salt-free complexant which may be used in the reprocessing of spent nuclear fuel. This paper reports on the study of H_2 and CO produced by radiolysis of HNO_3-0.2 mol/L FHA. These analyses were performed by gas chromatography in which a packed 5(A) molsieves column and a thermal conductivity detector (TCD) were used. Argon was used as a carrier gas in the analysis of H_2, the temperature of column and TCD was 85 ℃ and 120 ℃ respectively; H_2 was used as a carrier gas in the analysis of CO, the temperature of column and TCD were 50 ℃ and 80 ℃ respectively. The results show that the volume fraction of H_2 increases with the dose, but decreases with the concentration of nitric acid. CO is only produced at high dose, and the volume fraction of CO is much lower than that of H_2. The volume fraction of CO increases with the dose. When the concentration of nitric acid is not more than 0.5 mol/L, the volume fraction of CO is lower than that produced by 0.2 mol/L FHA aqueous solution; when the concentration of nitric acid is no less than 1.0 mol/L, the volume fraction of CO is higher than that produced by 0.2 mol/L FHA aqueous solution, and the volume fraction of CO increases with the concentration of nitric acid.