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| 直接显色光度法测定水中硫化物方法改进 |
| Determ ination of Sulfidein Water by Improved M ethylene Blue Spectrophotometry |
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| DOI： |
| 中文关键词: 硫化物 直接显色光度法 方法改进 |
| 英文关键词: Sulfide Directcolormethod Methodimprovement |
| 基金项目: |
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| 摘要点击次数: 4581 |
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| 中文摘要: |
| 用10 mL φ (HCl) =0.5 的溶液酸化水样,10 mL 锌氨络盐吸收液, 于0.6 L/min 抽空气30 min, 溶液吸收硫化物后吸光值稳定, 水和废水的测定加标回收率为94.4% ～ 101% , 精密度为 2.87% ～ 3.27% 。改进后的直接显色分光光度法测定水中硫化物 , 酸化 - 抽气分离装置简单、操作方便。 |
| 英文摘要: |
| The sulfide wasdetermined byimproved method ofdirectspectrophotometry with simple acidifi cation- exhaustseparation devices. The method waseasilyoperated by10 mL φ (HCl) =0.5 acidified sampleso lution, 0.6 L/min for30 min airsweeping and absorption wasstability. The recoveriesofwaterand wastewater were from 94.4% to101% ,theprecisionsfrom 2.87% to 3.27%. |
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