| FLOW-INJECTION DETERMINATION OF CYANIDE BY DETECTING AN INTERMEDIATE OF THE PYRIDINE BARBITURIC-ACID CHROMOGENIC REACTION | |
| MA, HC; LIU, JF | |
| 1992 | |
| 会议名称 | 5TH INTERNATIONAL CONF ON FLOW ANALYSIS |
| 会议日期 | AUG 21-24, 1991 |
| 会议地点 | INST TECHNOL KUMAMOTO, KUMAMOTO, JAPAN |
| 关键词 | FLOW SYSTEM SPECTROPHOTOMETRY CYANIDE WATERS |
| 英文摘要 | A unstable intermediate product with peak absorbance at 494 nm was found in the reaction of cyanide with pyridine-barbituric acid reagent. The intermediate was applied to the determination of cyanide by reagent-injection flow-injection analysis. The calibration graph was linear over the range of 0-4-mu-g ml-1 cyanide and the detection limit was 20 ng ml-1 cyanide; the relative standard deviation at 1.0-mu-g ml-1 was 0.6% (n = 16) and the sampling rate was 60 h-1. Interference studies showed that the main interferents are Co2+, Ni2+, SCN-, I- and formaldehyde. The proposed method was applied successfully to determine free cyanide in natural and waste water samples. |
| ISSN号 | 0003-2670 |
| 内容类型 | 会议论文 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24864]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | MA, HC,LIU, JF. FLOW-INJECTION DETERMINATION OF CYANIDE BY DETECTING AN INTERMEDIATE OF THE PYRIDINE BARBITURIC-ACID CHROMOGENIC REACTION[C]. 见:5TH INTERNATIONAL CONF ON FLOW ANALYSIS. INST TECHNOL KUMAMOTO, KUMAMOTO, JAPAN. AUG 21-24, 1991. |
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