摘要
研究了非离子表面活性剂Triton X—100 存在下,铜试剂光度法同时测定微量铜和镍的新方法。结果表明,pH=8 .50 的氨性介质中,铜、镍与铜试剂生成有色配合物,λCumax = 420nm ,λNimax = 330nm ,∑Cu420 = 1.1 ×104L·mol- 1·cm - 1 ,∑Ni330 = 2 .5×104L·mol-1·cm -1 ;铜量在0 ~4.4mg·L- 1 、镍量在0 ~1 .8mg·L-1 范围内符合比耳定律。此法用于钢样中微量铜、镍的测定,结果令人满意。
A new simultaneous method for determination of copper and nickel with DDTC spectrophotometry in the presence of Triton X-100 was studied. The results showed that in pH=8.50 ammoniacal medium,copper and nickel can form colored complexes with DDTC.λ cu max =420nm,420nm,λ Ni max =330nm;∑ Cu 420 =1.1×10 4L·cm 1,∑ Ni 330 =2.5×10 4L·mol -1 ·cm 1;Beeris law was obeyed for the concentration of copper in the range of 0~4.4mg·L -1 and 0~1.8mg·L -1 of nickel.The method had been applied to deter mination of trace copper and nickcl in steel sumples and the results were salisfactory.
出处
《内蒙古农业大学学报(自然科学版)》
CAS
1999年第4期130-132,共3页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古自然科学基金!(97111)