分析科学学报
分析科學學報
분석과학학보
JOURNAL OF ANALYTICAL SCIENCE
2010年
2期
243-245
,共3页
动力学荧光法%对苯二酚%阻抑%吡啰红Y
動力學熒光法%對苯二酚%阻抑%吡啰紅Y
동역학형광법%대분이분%조억%필라홍Y
Kinetic fluorimetry%Hydroquinone%Inhibitory%Pyronine Y
在稀H_2SO_4介质中,痕量对苯二酚对V(Ⅴ)催化KIO_4氧化吡啰红Y的反应具有显著的阻抑作用,据此建立了动力学荧光法测定痕量对苯二酚的新方法.研究了体系的动力学条件,考察了各种因素的影响.方法的线性范围为0.01～2.5 mg/L,检出限为0.006 mg/L.该方法用于水样中对苯二酚的测定,加标回收率在98.8%～101.6%之间,相对标准偏差为2.5%～2.9%.
在稀H_2SO_4介質中,痕量對苯二酚對V(Ⅴ)催化KIO_4氧化吡啰紅Y的反應具有顯著的阻抑作用,據此建立瞭動力學熒光法測定痕量對苯二酚的新方法.研究瞭體繫的動力學條件,攷察瞭各種因素的影響.方法的線性範圍為0.01～2.5 mg/L,檢齣限為0.006 mg/L.該方法用于水樣中對苯二酚的測定,加標迴收率在98.8%～101.6%之間,相對標準偏差為2.5%～2.9%.
재희H_2SO_4개질중,흔량대분이분대V(Ⅴ)최화KIO_4양화필라홍Y적반응구유현저적조억작용,거차건립료동역학형광법측정흔량대분이분적신방법.연구료체계적동역학조건,고찰료각충인소적영향.방법적선성범위위0.01～2.5 mg/L,검출한위0.006 mg/L.해방법용우수양중대분이분적측정,가표회수솔재98.8%～101.6%지간,상대표준편차위2.5%～2.9%.
A new kinetic fluorimetric method has been proposed for the determination of trace hydroquinone. The method was based on the inhibitory effect of hydroquinone on the catalytic oxidation of pyronine Y by potassium periodate in the presence of vanadium(Ⅴ) in dilute sulfuric acid solution. The optimum kinetic conditions of experiments have been studied, and the influence of various factors were investegated. The linear range of the determination was 0.01～2.5 mg/L and the detection limit was 0.006 mg/L.The method has been applied to determining hydroquinone in water samples, and the recoveries were in range of 98.8%～101.6% with the RSDs of 2.5%～2.9%.
