摘要
pH4～5的介质中，三苯基锡（TPhT）与过量的桑色素（Morin）迅速形成络合物，此络合物能发较强的荧光，在适量的TritonX－100存在下，由于TritonX－100的增敏作用荧光大大增强。λex／λem＝415／525nm，三苯基锡在0．05×10－6～1．4×10－6mol／L范围内与荧光强度呈良好的线性关系，检出限1．2×10－9mol／L，用于实际水样测定，结果令人满意。
Triphenyltin reacts rapidly with morin in a medium of pH 4~5 to yield a complex which is highly fluorescent and its fluorescence intensity is largely enhanced in the presence of Triton X-100. The fluoresence maximum wavelengths are λex/λem =415/525 nm, the fluorescence intensity is proportional to triphenyltin concentration in the range of 0. 05 ×10-6 to 1. 4 × 10-6 mol/L, and the detection limit is 1. 2 × 10-9 mol/L. The method has been satisfactorily applied to the determination of triphenyltin in water samples.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1996年第9期1078-1081,共4页
Chinese Journal of Analytical Chemistry
关键词
三苯基锡
荧光检测
水
桑色素
Triphenyltin, fluorometric detection, morin, water
