| 分光光度法测定卷烟主流烟气中氰化物的研究 |
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| 引用本文： | 范逸平,白波,何超,刘跃华,王锐,段利平.分光光度法测定卷烟主流烟气中氰化物的研究[J].安徽农业科学,2008,36(18). |
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| 作者姓名： | 范逸平 白波 何超 刘跃华 王锐 段利平 |
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| 作者单位： | 云南民族大学化学与生物技术学院,云南昆明,650031;云南民族大学化学与生物技术学院,云南昆明,650031;云南民族大学化学与生物技术学院,云南昆明,650031;云南民族大学化学与生物技术学院,云南昆明,650031;云南民族大学化学与生物技术学院,云南昆明,650031;云南民族大学化学与生物技术学院,云南昆明,650031 |
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| 摘 要： | 目的]研究卷烟主流烟气中氰化物含量的测定方法,同时对烟气补集装置进行改进。方法]以0.2 mol/L NaOH为吸收液,采用改进的烟气捕集装置捕集卷烟主流烟气中氰化物,然后在酸性介质中蒸馏分离,将捕集液中氰化物以HCN形态蒸出,再用1%(m/V)NaOH溶液吸收馏出液。馏出液中氰化物含量采用间接分光光度法测定。结果]CN-质量浓度在0~0.8 mg/L范围内符合比耳定律,检出限为0.02 mg/L,工作曲线相关系数0.999。用于实际样品分析,方法相对标准偏差为0.6%~1.7%,加标回收率为84.46%~108%。结论]分光光度法满足卷烟主流烟气中HCN的研究,改进后的装置吸收效果令人满意。
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| 关 键 词： | 主流烟气 氰化物 分光光度法 |
Research on Spectrophotometric Determination of Cyanide in Mainstream Smoke |
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| FAN Yi-ping et al.Research on Spectrophotometric Determination of Cyanide in Mainstream Smoke[J].Journal of Anhui Agricultural Sciences,2008,36(18). |
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| Authors: | FAN Yi-ping |
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| Abstract: | Objective] The research aimed to study the determination method of cyanide in mainstream smoke and improvement of mainstream smoke absorption device.Method] Cyanides in mainstream smoke were trapped by the adoption of improved gas trap with 0.2 mol/L NaOH as absorption solution.HCN was steamed out from the cyanide in the trapping solution after distillation separation in acid medium and then absorbed by 1%(m/V)of NaOH solution.Cyanides in the distillate were determined by indirect spectrophotometry.Result] Beer′s law held in the quality concentration range of 0～0.8 mg/L of ion CN-with 0.02 mg/L of the detection limit and the correlation coefficient 0.999 of calibration curve.The relative standard deviation of the actual samples determination results were 0.6%～1.7% and the recoveries of standard addition were 84.46% to 108%.Conclusion] The spectrophotometry could be used to determine the content of cyanide in mainstream smoke.And the effect of the improved device was satisfactory. |
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| Keywords: | Mainstream smoke Cyanide Spectrophotometry |
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