Determination of trace tin by solid substrate-room temperature phosphorimetry using sodium dodecyl sulfate as sensitizer.
The effects of different surfactants on solid substrate-room temperature phosphorescence (SS-RTP) properties of Sn(4+)-morin systems were investigated. It was found that the SS-RTP intensity of luminescence system was increased greatly in presence of sodium dodecyl sulfate (SDS). A new highly sensitive method for the determination of trace tin has been proposed based on sensitization of SDS on SS-RTP intensity of morin-tin system on the filter paper substrate. The linear dynamic range of this method is 8.0-112 ag per spot (with the volume of 0.4 microl per spot) with a detection limit of 4.0 ag per spot, and the regression equation is DeltaIp=199.7+3.456m(Sn(IV)) (ag per spot), with the correlation coefficient r=0.9998 (n=7). This simple, rapid and reproducible method has been applied to determine the amount of tin in real samples with satisfactory results.
Jiaming
Liu
L
Department of Chemistry, Zhangzhou Normal College, Zhangzhou 363000, PR China. jh123789@163.com
Guohui
Zhu
Z
Tianlong
Yang
Y
Aihong
Wu
W
Yan
Fu
F
Longdi
Li
L
D049449:Luminescence; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D013057:Spectrum Analysis; D014001:Tin / Q000032:analysis*
D012967:Sodium Dodecyl Sulfate; D014001:Tin