摘要
A convenient and sensitive spectrometric system based on a liquid core optical fiber and a charge coupled device was constructed for the determination of chromium(VI) in river water.Diphenylcarbazide was added to Cr(VI) solution to form colored complex in the medium of perchloric acid.With a 35 cm long Teflon optical fiber,the limit of detection(LOD) was 0.4 μg·L-1,ten times lower than that of Chinese National Standard Procedure(GB7467-87).The method was applied to determine Cr(VI) in river water without any preconcentration.The recovery was 99%~107%.
A convenient and sensitive spectrometric system based on a liquid core optical fiber and a charge coupled device was constructed for the determination of chromium (Ⅵ) in river water. Diphenylcarbazide was added to Cr (Ⅵ) solution to form colored complex in the medium of perchloric acid. With a 35 cm long Teflon optical fiber, the limit of detection (LOD) was 0.4μg·L^-1, ten times lower than that of Chinese National Standard Procedure (GB7467-87). The method was applied to determine Cr (Ⅵ) in river water without any preconcentration. The recovery was 99 % -107 % .
出处
《四川大学学报(自然科学版)》
CAS
CSCD
北大核心
2006年第3期710-712,共3页
Journal of Sichuan University(Natural Science Edition)