【摘要】 研究了氯磺酚偶氮硫代若丹宁(HSCT)与汞的显色反应。在pH3 8的HAc-NaAc缓冲介质中,TritonX-100存在下,HSCT与汞反应生成2∶1稳定络合物,λmax=550nm,体系ε=8 46×104L·mol-1·cm-1。汞含量在0—1 5mg/L内符合比耳定律。方法可用于水样中痕量汞含量的测定。更多还原

【Abstract】 The color reaction between HSCT and mercury is studied.The reaction between them can form 2∶1 stable complex compound with the existence of Triton X-100 in the pH 3.8 HAc-NaAc buffer medium.It conforms to Beer’s law when the concentration of Mercury is between 0 and 1.5 mg/L and the values of λmax and ε are equal to 550 nm and 8.46×104 L·mol-1·cm-1 separately.The way can be used to determine the concentration of trace mercury in water samples.更多还原