【摘要】 本文报道非水溶性高分子对激光热透镜在痕量金分析中的增强作用。结果表明，聚氯乙烯（PVC）能改变体系的热物理特性，并使体系最大吸收波长蓝移，从而增强热透镜光谱（TLS）的信号强度。该方法的分析灵敏度比分光光度法高三个数量级，成功地用于化探样品中痕量金的测定。更多还原

【Abstract】 The enhancement effect of polymer on thermal lensing spectroscopy(TLS) for determination of trace gold has been studied. It is shown that polyvinyl chIoride (PVC) acts with associated molecule of gold-malachite green and blue shifts the absortion maximum of coloration system. The PVC also changes the thermo-physical characteristics of the determination system. The sensitivity of the method is 3 orders higher than that of the spectrophotometry. The method has been applied successfully to the determination of trace gold in geochemical samples.更多还原