冶金分析
冶金分析
야금분석
METALLURGICAL ANALYSIS
2007年
10期
17-22
,共6页
周之荣%毋福海%黄丽玫%白研%陈红红%杨冰仪%陈海珍%颜戊利
週之榮%毌福海%黃麗玫%白研%陳紅紅%楊冰儀%陳海珍%顏戊利
주지영%무복해%황려매%백연%진홍홍%양빙의%진해진%안무리
动力学光度法%锡(Ⅳ)%微乳液%分离%富集%2,4-二氯苯基荧光酮(p-CPF)%溴酸钾
動力學光度法%錫(Ⅳ)%微乳液%分離%富集%2,4-二氯苯基熒光酮(p-CPF)%溴痠鉀
동역학광도법%석(Ⅳ)%미유액%분리%부집%2,4-이록분기형광동(p-CPF)%추산갑
tin%catalytic spectrophotometry%microemulsion%separation%enrichment%p-CPF%potassium bromate
基于弱酸介质中,在非离子表面活性剂微乳液存在时,痕量锡(Ⅳ)催化KBrO3氧化2,4-二氯苯基荧光酮(p-CPF)的褪色反应,建立了测定痕量锡(Ⅳ)的动力学光度法.方法检出限为0.012 μg/L,线性范围为0.0-1.0 μg/L.结合巯基葡聚糖凝胶分离富集,实现了样品中痕量锡(Ⅳ)的测定.方法用于环境水样中锡(Ⅳ)的测定,相对标准偏差为2.3 %~4.5 %,加标回收率为101.3 %~105.0 %,结果与原子吸收法测定值相符;用于岩石样品中锡(Ⅳ)的测定,结果与认定值相符.
基于弱痠介質中,在非離子錶麵活性劑微乳液存在時,痕量錫(Ⅳ)催化KBrO3氧化2,4-二氯苯基熒光酮(p-CPF)的褪色反應,建立瞭測定痕量錫(Ⅳ)的動力學光度法.方法檢齣限為0.012 μg/L,線性範圍為0.0-1.0 μg/L.結閤巰基葡聚糖凝膠分離富集,實現瞭樣品中痕量錫(Ⅳ)的測定.方法用于環境水樣中錫(Ⅳ)的測定,相對標準偏差為2.3 %~4.5 %,加標迴收率為101.3 %~105.0 %,結果與原子吸收法測定值相符;用于巖石樣品中錫(Ⅳ)的測定,結果與認定值相符.
기우약산개질중,재비리자표면활성제미유액존재시,흔량석(Ⅳ)최화KBrO3양화2,4-이록분기형광동(p-CPF)적퇴색반응,건립료측정흔량석(Ⅳ)적동역학광도법.방법검출한위0.012 μg/L,선성범위위0.0-1.0 μg/L.결합구기포취당응효분리부집,실현료양품중흔량석(Ⅳ)적측정.방법용우배경수양중석(Ⅳ)적측정,상대표준편차위2.3 %~4.5 %,가표회수솔위101.3 %~105.0 %,결과여원자흡수법측정치상부;용우암석양품중석(Ⅳ)적측정,결과여인정치상부.
A catalytic spectrophotometry for the determination of trace Sn(Ⅳ) based on its catalytic effect on discoloring reaction of oxidation of 2,4-dichlorophenylfluorone (p-CPF) with potassium bromate in weak acid solution and in the presence of microemulsion medium is described. The above reaction is followed spectrophotometrically by measuring the decrease in the absorbance at 530 nm for the catalytic reaction of p-CPF. Under optimum conditions, the calibration graph is linear in the range of 0.0- 1.0 μg/L of Sn(Ⅳ). The detection limit is 0.012 μg/L. Combined with sulphydryl dextrane gel (SDG) separation and enriching, the method has been successfully applied to the determination of Sn(Ⅳ) in environmental water with the relative standard deviation of 2.3 %-4. 5 % and the recovery of 101.3 %-105.0 %, and the results are in good agreement with those provided by AAS method. The method has also been successfully applied to the determination of Sn(Ⅳ) in geological samples, and the results are in good agreement with the certified values.