摘要
依据S2 - 催化碱性品红褪色的指示反应, 建立了测定微量S2 - 的动力学分析法. 在pH9-20的硼砂缓冲介质中, 在室温下, 本法线性测定范围为0-028 ~2-05 mg/L. 除SO32 - 外, 其余离子不影响测定. SO32 - 的干扰可加入甲醛除去. 用本法测定了水样和模拟样品中S2 - 的含量.
A catalytic procedure for the determination of trace sulfide was proposed based on the catalytic effect of it on the decolouration reaction of magenta.The calibration graph is linear for 0 028~2 05 mg/LS 2- ,and the detection limit is 0 016 mg/L.The interference effect of SO 3 2- could be effectively eliminated by formaldehyde.
出处
《福州大学学报(自然科学版)》
CAS
CSCD
1999年第S1期194-195,共2页
Journal of Fuzhou University(Natural Science Edition)