- 作者: 黃承文 ; 楊鈴襴
- 作者服務機構: Dept. of Chemistry, Tunghai Univ.,R.O.C.
- 中文摘要: High performance liquid chromatography coupled with electrochemical detection (HPLC-EC) method has been developed for the determination of benzidine and its related congeners in wastewater at the low ng/mL level. With a .mu.-Bondapak C/ sub 18/ column, 53% acetonitrile (pH 4.7), and electrochemical detection at +1.0 V applied potential, the detection limits range from 3 ng/mL for benzidine to 10 ng/mL for 3,3'- dichlorobenzidine, assuming a 100 .mu.L injection. The detection limits can be further lowered to the sub-ng/mL level by incorporating a short precolumn into the HPLC system for on-line sample enrichment. Recoveries are generally greater than 80% -- except for benzidine and 3,3'-diaminobenzidine which give 50 - 70% recoveries. Industrial wastewater samples from a coke-plant and a plant producing 3,3'-dichlorobenzidine based dyes were successfully studied via this method.
- 英文摘要: --
- 中文關鍵字: Benzidine; Hplc; Electrochemical Detection
- 英文關鍵字: 聯苯胺;高效液態色層分析;電化學檢測